Phytoecdysteroids and glycoceramides from Eriophyton wallchii.
Two new compounds, 28-epi-cyasterone and eriophytonoide, along with 11 known compounds, cyasterone, ajuforrestins A and B, 20-hydroxyecdysone, polypodin B, ajugalactone, 8-O-acetylharpagid, apigenin, N-[2hydroxy-(nonadecanoyl-tricosanoyl)]-4-hydroxy-trans-8-sphingenine, beta-sitosterol, and daucosterol, were isolated from the aqueous ethanolic extract of the whole herb of Eriophyton wallchii Benth. The structures of 28-epi-cyasterone and eriophytonoide were elucidated as (22R,24S,25S,28S)-5beta-stigmast-7-en-26-oic acid, 2beta,3beta,14,20,22,28-hexa hydroxy-6-oxo-gamma-lactone, and 1-O-beta-d-glucopyranosyl-(2S,3S,4R,8E)-2-[(2R)-2-hydroxyhexadecanoylamino]-1,3,4-octadecanetriol-8-ene, respectively, on the basis of spectral and chemical evidence.
Yi
Jinhai
J
Chengdu Institute of Biology, The Chinese Academy of Sciences, Chengdu 610041, People's Republic of China. yijinhai@yahoo.com.cn
Luo
Yinggang
Y
Li
Bogang
B
Zhang
Guolin
G
D002518:Ceramides / Q000302:isolation & purification*; D004365:Drugs, Chinese Herbal / Q000737:chemistry; D004440:Ecdysone / Q000302:isolation & purification; D000431:Ethanol; D010840:Phytosterols / Q000302:isolation & purification*; D010946:Plants, Medicinal / Q000737:chemistry*; D013265:Stigmasterol / Q000031:analogs & derivatives* / Q000302:isolation & purification
D002518:Ceramides; D004365:Drugs, Chinese Herbal; D010840:Phytosterols; C021238:phytoecdysones; C002082:cyasterone; D004440:Ecdysone; D000431:Ethanol; D013265:Stigmasterol