| a novel phorbol ester from excoecaria agallocha. | the novel phorbol ester 12-deoxyphorbol 13-(3e,5e-decadienoate) [1] was isolated as the anti-hiv principle of excoecaria agallocha leaves and stems collected in northwest australia. the structure was determined by spectral means. compound 1 was also a potent displacer of [3h]-phorbol dibutyrate from rat brain membranes. | 1995 | 7623051 |
| cryptic and free skin irritants of the daphnane and tigliane types in latex of excoecaria agallocha. | in the extremely skin irritant and caustic latex of excoecaria agallocha the major part of the polyfunctional diterpene esters (dte) (group i) are aliphatic polyunsaturated 9,13,14-orthoesters of the daphnane-type parent alcohol 5 beta-hydroxyresiniferonol-6 alpha, 7 alpha-epoxide, esterified simultaneously in their 20-positions with aliphatic saturated homologous n-carboxylic acids (even numbered, c22-c30). the minor part of dte is composed of analogous structures of 5 beta, 12 beta-dihydroxyre ... | 1994 | 7938270 |
| anti-tumor-promoting activity of diterpenes from excoecaria agallocha. | to search for possible anti-tumor-promoters, we carried out the primary screening of seventeen diterpenes (1-17) isolated from the resinous wood of excoecaria agallocha (euphorbiaceae) using an in vitro synergistic assay system. of these diterpenes, ent-16-hydroxy-3-oxo-13-epi-manoyloxide (5), (13r,14r)-ent-8alpha,13;14,15-diepoxy-13-epi- labda-3beta-ol (8) ent-3beta-hydroxy-15-beyeren-2-one (10) and ent-15-hydroxy-labda-8(17),13e-dien-3-one (14) exhibited significant inhibitory effects on epste ... | 1998 | 9781855 |
| anti-tumor-promoting activity of the diterpene from excoecaria agallocha. ii. | eight new diterpenoids (1-8) have been isolated from the wood of excoecaria agallocha (euphorbiaceae) and their inhibitory effects on the induction of epstein-barr virus early antigen (ebv-ea) in raji cells were examined to search for potent anti-tumor-promoters from natural resources. of these compounds, the secolabdane-type diterpenoid, compound 7 exhibited a remarkable inhibitory effect on ebv-ea induction, and a significant anti-tumor-promoting effect in the mouse two-stage carcinogenesis te ... | 2001 | 11767120 |
| ent-kaurane and beyerane diterpenoids from excoecaria agallocha. | the roots of excoecaria agallocha yielded four new diterpenoids, ent-3 beta,20-epoxy-3 alpha,6 alpha-dihydroxykaur-16-ene (agallochin f) (1), 3beta,20-epoxy-3 alpha-hydroxybeyer-15-ene (agallochin g) (2), 3 beta,20:15r,16s-diepoxy-3 alpha-beyeranol (agallochin h) (3), and 3 beta,20-epoxy-3 alpha,6 alpha-dihydroxy-18-nor-beyer-15-ene (agallochin i) (4), along with three known derivatives, 2-acetoxy-1,15-beyeradiene-3,12-dione (5), 2-hydroxy-1,15-beyeradiene-3,12-dione (6), and ent-kauran-16 beta- ... | 2002 | 11908985 |
| seco diterpenoids from excoecaria agallocha l. | chemical examination of the ethyl acetate solubles of the ch(3)oh:ch(2)cl(2) (1:1) extract of the roots of excoecaria agallocha l. collected from godavary estuary resulted in the isolation of three more new diterpenoids, agallochins m-o (1-3). the structures of the new diterpenoids were elucidated by a study of their physical and spectral data as methyl ent-13-epi-8,13-epoxy-4,6alpha-dihydroxy-3,4-secolabd-14-en-3-oate (1), methyl ent-13-epi-8,13-epoxy-2,3-secolabd-14-en-2,11-olid-3-oate (2), an ... | 2003 | 12560030 |
| agallochins j-l, new isopimarane diterpenoids from excoecaria agallocha l. | the ethyl acetate extract of excoecaria agallocha l. furnished three more new isopimarane diterpenoids, 11alpha,14alpha-dihydroxy-7,15-isopimaradien-3-one, agallochin j (1), 3alpha, 1alpha,14alpha-trihydroxyisopimara-7,15-diene, agallochin k (2) and 6alpha,14alpha,17-trihydroxy-7,15-isopimaradien-3-one, agallochin l. | 2003 | 12674139 |
| analysing ethnobotanical and fishery-related importance of mangroves of the east-godavari delta (andhra pradesh, india) for conservation and management purposes. | mangrove forests, though essentially common and wide-spread, are highly threatened. local societies along with their knowledge about the mangrove also are endangered, while they are still underrepresented as scientific research topics. with the present study we document local utilization patterns, and perception of ecosystem change. we illustrate how information generated by ethnobiological research can be used to strengthen the management of the ecosystem. this study was conducted in the godava ... | 2006 | 16681845 |
| pentacyclic triterpenoids from leaves of excoecaria agallocha. | a new oleanane-type triterpenoid (1) and five known pentacyclic triterpenoids (2-6) were isolated from the leaves of excoecaria agallocha. their structures were elucidated by spectroscopic analyses. the new compound was characterized as 3beta-[(2e,4e)-5-oxo-decadienoyloxy]-olean-12-ene (1). compounds 1-6 were found inactive in vitro against several human cancer cell lines. | 2006 | 16755073 |
| a new atisane-type diterpene from the bark of the mangrove plant excoecaria agallocha. | a new atisane-type diterpene, ent-16alpha-hydroxy-atisane-3,4-lactone (4) and three known diterpenes, ent-16alpha-hydroxy-atisane-3-one (1), ent-atisane-3beta,16alpha-diol (2), ent-3,4-seco-16alpha-hydroxyatis- 4(19)-en -3-oic acid (3) were isolated from the bark of the mangrove plant excoecaria agallocha. their structures and relative stereochemistry were elucidated by means of extensive nmr and ms analysis. compound 3 exhibited significant anti-microfouling activity against the adherence of ps ... | 2009 | 19158653 |
| spectral reflectance properties of mangrove species of the muthupettai mangrove environment, tamil nadu. | in the muthupettai mangrove environment, spectral properties of six mangrove species viz. avicennia marina, aegiceras corniculatum, excoecaria agallocha, acanthus ilicifolius, suaeda monoica and s. maritima was studied using multi band ground truth radiometer (model-041). the study found that the chlorophyll concentration of different mangrove leaves varies between 0.05 and 0.36 mg g(-1), registering the minimum in s. maritima and maximum in e. agallocha. interestingly species with higher chloro ... | 2008 | 19295083 |
| cytotoxic polyphenols from the marine-derived fungus penicillium expansum. | two new polyphenols containing both phenolic bisabolane sesquiterpenoid and diphenyl ether units, expansols a (1) and b (2), and two new phenolic bisabolane sesquiterpenoids, (s)-(+)-11-dehydrosydonic acid (3) and (7s,11s)-(+)-12-acetoxysydonic acid (4), along with two known compounds, (s)-(+)-sydonic acid (5) and diorcinol (6), were isolated from the metabolites of the marine-derived fungus penicillium expansum 091006 endogenous with the mangrove plant excoecaria agallocha. on the basis of spec ... | 2010 | 20415462 |
| tnf-α inhibitory diterpenoids from the chinese mangrove plant excoecaria agallocha l. | chemical examination of the stems and twigs of the mangrove plant excoecaria agallocha l. resulted in the isolation of six ent-kaurane diterpenoids named agallochaols k-p (1-6), an atisane-type diterpenoid agallochaol q (7), along with eight known diterpenoids (8-15). their structures were elucidated on the basis of extensive spectroscopic analysis and by comparison of their nmr spectroscopic data with those reported in literature, in association with the biogenetic relationship with the x-ray s ... | 2010 | 20822783 |
| [distribution of hg in mangrove plants and correlation with hg speciation in sediments]. | plant is an important role in biogeochemical cycle of hg. the aim of this study is to ascertain hg accumulation in several kinds of mangrove plants, and to discuss relationship among hg concentrations in mangrove plants and different hg speciation in sediments. contents of total mercury (thg) in mangrove plants and sediments were determined. hg speciation was determined with a modified tessier's method. contents of thg of the mangrove plants were in the range of 817.5-3 197.6 ng/g. in detail, hg ... | 2010 | 21072952 |
| mangrove plants as a source of lead compounds for the development of new antiplasmodial drugs from south east coast of india. | malaria is the world's leading killer among the infectious diseases. the treatment of malaria is mystified by the challenges of widespread resistance of the malaria parasites to cheap and affordable antimalarial drugs. the present study was made in an attempt to identify the in vitro antiplasmodial activity against mangrove plant parts. (avicennia marina, acanthus ilicifolius, bruguiera cylindrica, excoecaria agallocha, rhizophora apiculata, and rhizophora mucronata mangrove plant extracts exhib ... | 2010 | 21120528 |
| new hedgehog/gli signaling inhibitors from excoecaria agallocha. | the inhibition of the hedgehog (hh) signaling pathway has emerged as an anti-cancer strategy. three flavonoid glycosides including 2 new compounds (1-2) were isolated from excoecaria agallocha as hedgehog/gli1-mediated transcriptional inhibitors and exhibited cytotoxicity against human pancreatic (panc1) and prostate (du145) cancer cells. our data revealed that compound 1 clearly inhibited the expression of gli-related proteins (ptch and bcl-2) and blocked the translocation of gli1 transcription ... | 2010 | 21190854 |
| microbispora hainanensis sp. nov., isolated from rhizosphere soil of excoecaria agallocha in a mangrove. | strain 211020t was isolated from rhizosphere soil of excoecaria agallocha in a mangrove, hainan, china. the strain produced longitudinal pair spores branching from aerial hyphae. the 16s rrna gene sequence analysis showed that the isolate belonged to the genus microbispora, exhibiting the highest 16s rrna gene sequence similarity (98.75%) to m. corallina jcm 10267t with a low dna-dna relatedness value (13±0.6%). the isolate contained meso-a2pm as the diagnostic diamino acid but madurose was not ... | 2011 | 22140174 |
| comparative study of heavy metals in selected mangroves of sundarban ecosystem, india. | accumulation and partitioning of eight heavy metals cr, pb, zn, cd, ni, cu, co and fe were studied in the root, stem and leaf of mangrove species (sonneratia caseolaris, acanthus ilicifolius and excoecaria agallocha) for comparison and in mangrove sediments for calculation of bio concentration factor (bfc) in sundarban india. magnitude of fe was found highest in the sediments (35371.71 mg kg(-1)) and plant parts of the three species (a maximum of 11428.0 mg kg(-1) in the root of s. caseolaris). ... | 2012 | 23741799 |
| a complete profile on blind-your-eye mangrove excoecaria agallocha l. (euphorbiaceae): ethnobotany, phytochemistry, and pharmacological aspects. | traditional system of medicine consists of large number of plants with various medicinal and pharmacological importances. this article provides a comprehensive review of the complete profile of an important mangrove plant excoecaria agallocha l. (euphorbiaceae) and elaborately describing the ethnobotany, phytochemistry, and pharmacological properties. it is used traditionally in the treatment of various diseases such as epilepsy, ulcers, leprosy, rheumatism, and paralysis. the latex obtained fro ... | 2016 | 28082796 |
| cytotoxic polyphenols from the fungus penicillium expansum 091 006 endogenous with the mangrove plant excoecaria agallocha. | as part of our ongoing chemical investigation of biologically active metabolites from marine-derived fungi, four new polyphenols containing both phenolic bisabolane and diphenyl ether units, expansols c-f (1-4), and one new diphenyl ether derivative, 3-o-methyldiorcinol (5), as well as twelve known compounds (6-17), were isolated from penicillium expansum 091006 endogenous with the mangrove plant excoecaria agallocha (euphorbiaceae). the structures of the new metabolites were determined on the b ... | 2012 | 23059631 |
| field evaluation of a botanical formulation from the milky mangrove excoecaria agallocha l. against helicoverpa armigera hübner. in abelmoschus esculentus (lady's finger) and cajanus cajan (pigeon pea). | to evaluate a formulation from the milky mangrove tree excoecaria agallocha l. (e. agallocha) against helicoverpa armigera hubner (h. armigera). | 2014 | 25312115 |
| larvicidal activity of green synthesized silver nanoparticles using excoecaria agallocha l. (euphorbiaceae) leaf extract against aedes aegypti. | green synthesis of silver nanoparticles (agnps) using plant extracts has been achieved by eco-friendly reducing and capping agents. the present study was conducted to evaluate the larvicidal efficacies of agnps synthesized using aqueous leaf extracts of excoecaria agallocha against dengue vector, aedes aegypti. the 3(rd) and 4(th) instar larvae of a. aegypti were exposed to various concentrations of aqueous extracts of e. agallocha, synthesized agnps and also crude solvent extracts (methanol and ... | 2016 | 27906138 |
| mosquito larvicidal activity of linear alkane hydrocarbons from excoecaria agallocha l. against culex quinquefasciatus say. | excoecaria agallocha linn. the blinding mangrove tree of historical significance, is well known for its curative properties. in this investigation, crude hexane extract from the dried roots of e. agallocha inhibited 50% of the growth of third instar larvae of culex quinquefasciatus say. within 24 h (lc(50): 315 ppm). sio(2) (60-120) column chromatography purification of the extract yielded four fractions, of which fractions 3 (lc(50): 61.2 ppm) and 4 (lc(50): 74.5 ppm) exhibited 100% larvicidal ... | 2012 | 22168302 |
| facile synthesis of multifunctional silver nanoparticles using mangrove plant excoecaria agallocha l. for its antibacterial, antioxidant and cytotoxic effects. | the current study describes a simple, rapid and eco-friendly method for the synthesis of silver nanoparticles (agnps) using excoecaria agallocha (e. agallocha) leaf extract as stabilizer, bioreductant and capping agent. synthesized agnps were characterized by uv-visible spectroscopy (uv-vis), x-ray diffraction (xrd), fourier transform infrared (ft-ir) spectroscopy, field emission scanning electron microscopy (fesem) and energy dispersive x-ray spectroscopy (edx). generation of agnps was initiall ... | 2017 | 28316409 |
| eare-1, a transcriptionally active ty1/copia-like retrotransposon has colonized the genome of excoecaria agallocha through horizontal transfer. | long terminal repeat (ltr) retrotransposons constitute the majority of the content of angiosperm genomes, but their evolutionary dynamics remain poorly understood. here, we report the isolation and characterization of a putative full-length (~9550 bp) ty1/copia-like retrotransposon in excoecaria agallocha and its evolution in euphorbiaceae. the so-called eare-1 is phylogenetically closely related to rire-1 from oryza australiensis, and has proliferated recently (~7.19 mya) in the e. agallocha ge ... | 2017 | 28174588 |
| uptake and distribution of trace elements in dominant mangrove plants of the indian sundarban wetland. | absorption, accumulation and translocation of 12 trace elements in nine dominant mangrove plants in the indian sundarban wetland revealed both organ-specific and site-specific characteristics. an overall enrichment of elements was recorded in rhizosediment, exceeding the prescribed effects range-low (er-l) of consensus based sediment quality guidelines (sqgs) for cu and pb. avicennia officinalis, a. alba, ceriops decandra and excoecaria agallocha exhibited unique potential for accumulating al, c ... | 2016 | 27650375 |
| are we failing to protect threatened mangroves in the sundarbans world heritage ecosystem? | the sundarbans, the largest mangrove ecosystem in the world, is under threat from historical and future human exploitation and sea level rise. limited scientific knowledge on the spatial ecology of the mangroves in this world heritage ecosystem has been a major impediment to conservation efforts. here, for the first time, we report on habitat suitability analyses and spatial density maps for the four most prominent mangrove species--heritiera fomes, excoecaria agallocha, ceriops decandra and xyl ... | 2016 | 26878801 |
| epimeric excolides from the stems of excoecaria agallocha and structural revision of rhizophorin a. | excolides a-b (1-4) represent the first examples of a new class of secolabdanoids with an unprecedented framework, which were isolated from the stems of excoecaria agallocha. their structures were determined by spectroscopic analysis, chemical modifications, cd, and single-crystal x-ray analysis (1 and 4) as excolide a (1), 11-epi-excolide a (2), 11,13-di-epi-excolide a (3), and excolide b (4). in addition, the structure of rhizophorin a (7), a novel bicyclic secolabdanoid, was revised as excoli ... | 2015 | 26011167 |
| accumulation of trace metals by mangrove plants in indian sundarban wetland: prospects for phytoremediation. | the work investigates on the potential of ten mangrove species for absorption, accumulation and partitioning of trace metal(loid)s in individual plant tissues (leaves, bark and root/pneumatophore) at two study sites of indian sundarban wetland. the metal(loid) concentration in host sediments and their geochemical characteristics were also considered. mangrove sediments showed unique potential in many- fold increase for most metal(loid)s than plant tissues due to their inherent physicochemical pr ... | 2015 | 25581820 |
| anti-nociceptive effect in mice of thillai flavonoid rutin. | we investigated the anti-nociceptive effect of excoecaria agallocha (e.agallocha) against chemically and thermally induced nociception, albino mice received a dose of 10, 15, 20, or 25 mg/kg of alkaline chloroform fraction (alk-cf) of e.agallocha by oral administration. compared with controls, alk-cf decreased the writhing numbers (p<0.01) in a dose dependent manner. further we determined that, alk-cf contained, a potent compared to control, also potent anti-nociceptive agent that acted via opio ... | 2014 | 24758758 |
| effects of salinity and nutrient addition on mangrove excoecaria agallocha. | effects of salinity on seed germination and growth of young (1 month old) and old (2-year old) seedlings of excoecaria agallocha were investigated. combined effects of salinity and nutrient level were also examined on old seedlings. seed germination was best at 0 and 5 psu salinity. 15 psu salinity significantly delayed root initiation and decreased final establishment rate. all seeds failed to establish at 25 psu salinity. young seedlings performed best at 0 and 5 psu, but growth was stunned at ... | 2014 | 24691495 |
| investigation of microbial community structure in constructed mangrove microcosms receiving wastewater-borne polycyclic aromatic hydrocarbons (pahs) and polybrominated diphenyl ethers (pbdes). | the study aims to examine relationships between microbial community structure and mixed pollutants of polycyclic aromatic hydrocarbons (pahs) and polybrominated diphenyl ethers (pbdes) in constructed wetland microcosms, planted with excoecaria agallocha or kandelia obovata, two common mangrove plant species, and under two tidal regimes, everyday tidal (te) and no tidal flooding (tn). results showed both microbial community structure and the retained amounts of pollutants were significantly deter ... | 2014 | 24487304 |
| biological activities and chemical constituents of some mangrove species from sundarban estuary: an overview. | this review represents the studies performed on some beneficial mangrove plants such as ceriops decandra, xylocarpus granatum, xylocarpus moluccensis, excoecaria agallocha, sarcolobus globosus, sonneratia caseolaris and acanthus ilicifolius from the sundarban estuary spanning india and bangladesh with regard to their biological activities and chemical investigations till date. sundarban is the largest single chunk of mangrove forest in the world. the forest is a source of livelihood to numerous ... | 2013 | 24347925 |
| inhibitory effects of polyphenols toward hcv from the mangrove plant excoecaria agallocha l. | four new polyphenols namely excoecariphenols a-d (1-4) were isolated from the chinese mangrove plant excoecaria agallocha l. together with 23 known phenolic compounds. the structures of new compounds were elucidated on the basis of extensive spectroscopic analyses including ir, ms, nmr, and cd data. excoecariphenols a and b presented as the unusual flavane-based 1-thioglycosides. part of the isolated polyphenols were tested against hepatitis c ns3-4a protease and hcv rna in huh 7.5 cells. excoec ... | 2012 | 22196120 |
| ecological problems of tree species in protected ecosystems of orissa, india. | the tree layer vegetation of two protected ecosystems i.e. similipal biosphere reserve (sbr) and bhitarkanika national park (bnp) of eastern ghat was analysed for structure, composition and diversity. with respect to the tree species composition the two protected ecosystems were differed from each other at the family, genera and species level. about 117 tree species representing 85 genera and 42 families were recorded in sbr. the average number of species per hectare was 32.5. however, a total o ... | 2011 | 21888242 |
| formation of iron plaque on mangrove roots receiving wastewater and its role in immobilization of wastewater-borne pollutants. | iron (fe) plaque formed on mangrove root increased with wastewater discharge, but the extent was species-specific. for bruguiera gymnorrhiza, fe plaque concentration was 0.80 mg g(-1) root d.wt at day 0 and increased to 4.59, 6.84 and 7.52 mg g(-1) at day 75 in the fresh water control (fw), synthetic wastewater with pollutant concentrations five times of municipal sewage (5sw) and double of 5sw (10sw) treatments, respectively; the respective increases in excoecaria agallocha were from 0.70 to 2. ... | 2011 | 21704345 |
| effect of wastewater discharge on root anatomy and radial oxygen loss (rol) patterns of three mangrove species in southern china. | the effects of wastewater discharge on radial oxygen loss (rol) and root anatomy varied among mangrove species. rol of bruguiera gymnorrhiza (l) increased from 22.44 ng cm(-2) min(-1) in the control (just fresh water) to 31.09 ng cm(-2) min(-1) when received normal wastewater (nw) and to 44.22 ng cm(-2) min(-1) when treated with strong wastewater (10nw). however, discharge of both nw and 10nw caused 28% decreases of rol in the root tip of excoecaria agallocha l., and the decreases in acanthus il ... | 2010 | 21166289 |
| effects of wastewater discharge on formation of fe plaque on root surface and radial oxygen loss of mangrove roots. | effects of wastewater discharge on radial oxygen loss (rol), formation of iron (fe) plaque on root surface, and their correlations in bruguiera gymnorrhiza (l.) poir and excoecaria agallocha l. were investigated. rol along a lateral root increased more rapidly in control than that in strong wastewater (with pollutant concentrations ten times of that in municipal sewage, 10nw) treatment, but less fe plaque was formed in control for both plants. for b. gymnorrhiza receiving 10nw, fe plaque formati ... | 2010 | 19782449 |
| comparative histochemical localization of secondary metabolites in seed-raised and in vitro propagated plants of excoecaria agallocha linn. (euphorbiaceae), the milky mangrove tree of historical significance. | mangroves synthesize novel secondary chemicals that are poorly understood. among the euphorbiaceous mangrove species, excoecaria agallocha linn. produces novel terpenoids and alkaloids of medicinal importance. we conducted a comparative tissue level histochemical study of e. agallocha l. to determine whether in vitro propagation alters the content of phytochemicals within the plant parts. transverse sections of the root, stem and leaves of seed-raised saplings and in vitro propagated plants stai ... | 2010 | 19701827 |
| differential expression of physiological and biochemical characters of some indian mangroves towards salt tolerance. | mangroves are physiologically interesting as potential models for stress tolerance and as sources of alternative ideas about physiological strategies relevant at the ecosystem level. variation in habitat has great impact on the physiological behavior and biochemical expression level of a particular plant species. five species of mangroves, growing in saline and fresh water conditions were assessed for their ecological fitness in two different habitats. assessments were based on some physiologica ... | 2009 | 23572924 |
| trypan blue as a fluorochrome for confocal laser scanning microscopy of arbuscular mycorrhizae in three mangroves. | roots of three mangroves, acanthus ilicifolius, ceriops tagal and excoecaria agallocha, collected from forests of the sundarbans of india were stained with trypan blue to observe arbuscular mycorrhizal colonization. spores of arbuscular mycorrhizal fungi isolated from rhizospheric soil, collected together with the root samples, also were stained for testing the suitability of the dye as a fluorochrome. confocal laser scanning microscopy images were constructed. a. ilicifolius and e. agallocha ex ... | 2008 | 18846451 |
| [triterpenoids and steroids from excoecaria agallocha]. | to study the chemical constituents of excoecaria agallocha l. | 2008 | 18533497 |
| elucidation of excogallochaols a-d, four unusual diterpenoids from the chinese mangrove excoecaria agallocha. | diterpenoids, excoagallochaols a-d (1-4), with an unprecedented skeleton, were isolated from the ethyl acetate extract of the stems and leaves of the mangrove excoecaria agallocha l. the structures of these metabolites were elucidated on the basis of detailed analysis of their spectroscopic data and by comparison with those of related compounds reported in literature. | 2007 | 17585975 |
| [effects of divergent habitat on genetic structure of population of excoecaria agallocha, a mangrove associate]. | genetic diversity and population genetic structure of excoecaria agallocha, a typical mangrove associate species,were surveyed at divergent habitats (intertidal and inland). in general, intertidal populations had higher genetic diversity than inland populations. genetic differentiation among intertidal populations (g(st) = 0.191) were smaller than that among inland populations (g(st) = 0.218), suggesting that gene flow via seed among intertidal populations were stronger. in an analysis of molecu ... | 2005 | 16459657 |
| a new isopimarane-type diterpene and a new natural atisane-type diterpene from excoecaria agallocha. | from the woods of excoecaria agallocha, a new isopimarane-type diterpene, 3alpha,11beta-dihydroxy-ent-isopimara-8(14),15-dien-2-one and a new natural atisane-type diterpene, 16beta-hydroxy-ent-atisan-3-one were isolated together with three known compounds, ribenone, ent-labda-8(17),13e-diene-3beta,15-diol, and ent-3beta-hydroxybeyer-15-ene-2,12-dione. their structures were determined by spectral data and x-ray crystallography evidence. | 2005 | 16176905 |
| seco-labdane type diterpenes from excoecaria agallocha. | labdane-type diterpenes, called excoecarins s, t1, and t2 were isolated from the resinous wood of excoecaria agallocha, along with three known compounds, ent-12-oxo-2,3-secobeyer-15-ene-2,3-dioic acid, agallochin h, and ent-15-epoxy-beyerane-3alpha-ol. their structures were elucidated on the basis of spectroscopic data, chemical evidence, and x-ray analysis. | 2003 | 14559277 |
| three diterpenoids (excoecarins v1-v3) and a flavanone glycoside from the fresh stem of excoecaria agallocha. | three new diterpenoids, excoecarins v1-v3 (1-3) and a new flavanone glycoside (7) were isolated from the fresh stem of excoecaria agallocha l. their structures were elucidated as: 2alpha,3alpha,18-trihydroxy-3beta,20-epoxybeyer-15-ene (1), ent-2,3-secokaur-16-en-2,3-dioic acid (2), ent-3,4-seco-16alpha-hydroxyatis-4(19)-en-3-oic acid (3), and 3,5,7,3',5'-pentahydroxy-2r,3r-flavanonol 3-o-alpha-l-rhamnopyranoside (7) on the basis of spectroscopic data, chemical evidence, and/or x-ray analysis. | 2003 | 14519918 |
| new bis-secolabdane diterpenoids from excoecaria agallocha. | two new bis-secolabdane diterpenoids, excoecarins r1 (1) and r2 (2), were isolated from the resinous wood of excoecaria agallocha. the structures of 1 and 2 were established on the basis of spectroscopic data interpretation and chemical evidence. | 2003 | 12542355 |
| five diterpenoids (agallochins a-e) from the mangrove plant excoecaria agallocha linn. | chemical examination of the hexane extract of the roots of excoecaria agallocha linn collected from the godavari estuary resulted in the isolation of altogether eleven diterpenoids of which five (1-5) are new. the structures of the new diterpenoids have been elucidated by a study of their physical and spectral (uv, ir, 1h, 13c, dept, 1h-1h cosy, noesy, hmqc, hmbc and mass) data as 3-oxo-ent-13epi-8(13)-epoxy-15-chloro-14-hydroxylabdane (1), ent-15-chloro-13,14-dihydroxylabd-8(9)-en-3-one (2), en ... | 2000 | 11140521 |
| excoecarins d, e, and k, from excoecaria agallocha. | three novel diterpenoids, excoecarins d, e, and k (1-3), were isolated from excoecaria agallocha. the structures of 1-3 were established as 3alpha,18-dihydroxy-3beta,20-epoxybeyer-15-ene, (15r, 16s)-ent-15,16-epoxybeyeran-3-one, and ent-3beta-hydroxykaur-16-en-2-one, respectively, on the basis of extensive nmr experiments and, in the case of 1, by x-ray analysis. | 2000 | 10757715 |
| molecular phylogeny of mangroves. vi. intraspecific genetic variation in mangrove species excoecaria agallocha l. (euphorbiaceae). | genomic dna from 84 individuals of excoecaria agallocha from seven mangrove populations were analysed for random amplified polymorphic dnas (rapds) using 16 random 10-mer primers. polymorphism within populations varied from 20% to 31%. at the interpopulation level, 111/149 (74%) of rapds were polymorphic. restriction fragment length polymorphism (rflp) analysis of 21 individuals (3 individuals randomly selected from the 7 populations) using 30 probe-enzyme combinations revealed a high level of i ... | 2000 | 10701120 |
| evaluation of the antioxidant activity of environmental plants: activity of the leaf extracts from seashore plants. | the antioxidant activity of the methanolic extracts of the leaves of 39 plant species was examined. these leaves were collected from the plants growing on subtropical seashores. the activity was evaluated by three kinds of assay methods, which included the dpph radical scavenging assay, linoleic acid oxidation assay, and oxidative cell death assay. two extracts from excoecaria agallocha and terminalia catappa showed remarkably potent activity in all assay systems. the hplc analysis of the extrac ... | 1999 | 10564049 |
| skin and eye injury due to latex of excoecaria agallocha. | a case report of severe skin and eye injury due to excoecaria agallocha is presented to highlight the toxic nature of the latex of this common mangrove plant. | 1998 | 9838732 |