Zobrazeno 1 - 10
of 223
pro vyhledávání: '"William A. Ayer"'
Publikováno v:
Bulletin des Sociétés Chimiques Belges. 80:83-90
Three new alkaloids—inundatine [V], isoinundatine [VI] and dehydrolycopecurine [VII]—have been isolated from Lycopodium inundatum L. together with methyl p-coumarate [I], α-onocerine [II], lycopodine [III] and lycodoline [IV].
Autor:
William A. Ayer, Claude Dufresne
Publikováno v:
Bulletin des Sociétés Chimiques Belges. 95:699-706
Citricolic acid, a metabolite of the fungus Mycena citricolor, has been shown to possess structure 1. The structure was elucidated by a combination of physical and Chemical methods. Citricolic acid (1) is a new type of natural product which appears t
Autor:
Zheng-Xiang Lu, Jennifer L Zantige, Latchezar S. Trifonov, André Laroche, Koichi Machida, Kuo Joan Cheng, William A. Ayer, Hung Chang Huang
Publikováno v:
Phytochemistry. 58:173-177
Two 3(2H)-benzofuranones and three chromanes were isolated from the mycoparasitic fungus Coniothyrium minitans. Their structures and absolute stereochemistry were determined by spectroscopic methods.
Publikováno v:
Natural Product Letters. 14:405-410
The metabolites produced by the cup fungus Urnula craterium grown in liquid culture were isolated and elucidated by spectral methods.
Autor:
Damase P. Khasa, Monika Wichlacz, Priyotosh Chakravarty, William A. Ayer, Latchezar S. Trifonov
Publikováno v:
Phytochemistry. 52:1421-1425
Two 6,7-seco-caryophyllene-related sesquiterpenes, hebelophyllenes G and H and an alloaromadendrane, hebelodendrol, were isolated from liquid cultures of the ectomycorrhizal fungus Hebeloma longicaudum. Their structures were determined by modern spec
Publikováno v:
Canadian Journal of Chemistry. 77:1514-1520
Several annotinine derivatives were prepared and their conformations were determined on the basis of 1D NMR and 2D NMR spectra (GCOSY, HMQC, HMBC, TROESY). One of these compounds has new unique 5-ring skeleton.Key words: alkaloids, chemical tranforma
Autor:
Latchezar S. Trifonov, Damase P. Khasa, Priyotosh Chakravarty, William A. Ayer, Monika Wichlacz
Publikováno v:
Phytochemistry. 51:873-877
Three new caryophyllenes, hebelophyllenes A–C were isolated from the ectomycorrhizal fungus Hebeloma longicaudum . Their structures were determined by modern spectroscopic methods.
Publikováno v:
Phytochemistry. 51:215-221
Six new fusicoccane-like diterpenoids, brassicicene A to F, have been isolated from the liquid culture filtrates of the canola pathogen Alternaria brassicicola. Their structures have been established using a broad range of spectral evidence including
Publikováno v:
Canadian Journal of Chemistry. 77:1514-1520
Publikováno v:
Phytochemistry. 49:589-592
Three sesquiterpenes, clitocybulol A (1), B (2) and C (3), with a new carbon skeleton were isolated from the Basidiomycete Clitocybula oculus. Their structures were determined by spectroscopic methods. The nematicidal activity on a fungus-feeding nem