| Phthalide derivatives with antifungal activities against the plant pathogens isolated from the liquid culture of Pestalotiopsis photiniae. | Three new phthalide derivatives (1-3) named 5-(3'-methyl-2'-butenyl)-2-hydroxy-3-methoxy-4-methylbenzoic acid (1), 5-(3'-carboxyl-3'-methyl-2E-allyloxy)-3-methoxy-4-methylphthalide (2) and 5-(3',3'-dimethylallyloxy)-2-methoxycarbonyl-3-methoxy-4-methylbenzoic acid (3) together with six known phthalide derivatives named 5-(3',3'-dimethylallyloxy)-3-methoxy-4-methylphthalide (4), zinnimidine (5), 5-(3',3'-dimethylallyloxy)-3-methoxy-4-methylphthalide (6), 5-(3',3'-dimethylallyloxy)-3-methoxy-4-met ... | 2011 | 21915132 |
| photinides a-f, cytotoxic benzofuranone-derived gamma-lactones from the plant endophytic fungus pestalotiopsis photiniae. | photinides a-f (1-6), six new unique benzofuranone-derived gamma-lactones, have been isolated from the crude extract of the plant endophytic fungus pestalotiopsis photiniae. the structures of these compounds were elucidated primarily by nmr spectroscopy, and their absolute configurations were assigned by application of the cd excitation chirality method. compounds 1-6 displayed modest cytotoxic effects against the human tumor cell line mda-mb-231. | 2009 | 19371070 |
| dihydroberkleasmin a: a new eremophilane sesquiterpenoid from the fermentation broth of the plant endophytic fungus pestalotiopsis photiniae. | dihydroberkleasmin a (1), a new ester-substituted sesquiterpenoid related to the eremophilane class, together with the known compound berkleasmin c (2), were isolated from the fermentation broth of the plant endophytic fungus pestalotiopsis photiniae. the structure of dihydroberkleasmin a (1) was elucidated by extensive spectroscopic analysis. the stereochemistry was assigned by comparison of the nmr spectroscopic data with those of berkleasmin a. | 2011 | 21346691 |