| systematics of hypocrea citrina and related taxa. | morphological studies and phylogenetic analyses of dna sequences from three genomic regions - the internal transcribed spacer (its) regions of the nuclear ribosomal gene repeat, a partial sequence of rna polymerase ii subunit (rpb2), and a partial sequence of translation elongation factor (tef1) - were used to investigate the systematics of hypocrea citrina and related species. a neotype specimen is designated for h. citrina that conforms to persoon's description of a yellow effuse fungus occurr ... | 2006 | 18490988 |
| structure elucidation of hypocreolide a by enantioselective total synthesis. | the nonenolide hypocreolide a was isolated from culture filtrates of the ascomycete hypocrea lactea. it exhibits moderate antimicrobial activity against various tested fungi and bacteria. since neither the relative nor the absolute stereochemistry of the compound could be initially assigned, a stereochemically flexible total synthesis was developed. the two stereogenic centers were formed in high enantioselectivity and yield using transition metal catalyzed asymmetric reactions. while attempts t ... | 2010 | 20401389 |
| mycelial extract of cordyceps ophioglossoides prevents neuronal cell death and ameliorates beta-amyloid peptide-induced memory deficits in rats. | ameliorating effects of methanol extracts of basidiomycetes against in vitro and in vivo model of alzheimer's disease were investigated. the extracts of cordyceps ophioglossoides and hypocrea citrina var. citrina prevented the beta-amyloid((25-35)) (abeta((25-35)))-induced cell death in sk-n-sh neuronal cells. however, in rat model of alzheimer's disease, 30-d intraperitoneal administration with only the extract of cordyceps ophioglossoides significantly prevented spatial memory loss by intracra ... | 2004 | 15256753 |