Studies on marine natural products. II. New polyhydroxylated sterols from the soft coral Lobophytum pauciflorum (Ehrenberg).
作者:YASUJI YAMADA、SUKEJI SUZUKI、KAZUO IGUCHI、HIROYUKI KIKUCHI、YASUMASA TSUKITANI、HARUO HORIAI、HAJIME NAKANISHI
DOI:10.1248/cpb.28.473
日期:——
Three new polyhydroxylated sterols (II), (IV) and (VI), along with the known sterol (I), were isolated from the Japanese soft coral Lobophytum pauciflorum (Ehrenberg). The structures of II, IV and VI were established to be 24ζ-methylcholestane-3β, 5α, 6β, 25-tetrol, 24ζ-methylcholestane-1β, 3β, 5α, 6β-tetrol and 24-methylenecholestane-1β, 3β, 5α, 6β-tetrol, respectively.
从日本软珊瑚 Lobophytum pauciflorum (Ehrenberg) 中分离出三种新的多羟基固醇(II)、(IV)和(VI)以及已知的固醇(I)。II、IV和VI的结构分别为24ζ-甲基胆烷-3β, 5α, 6β, 25-四醇、24ζ-甲基胆烷-1β, 3β, 5α, 6β-四醇和24-亚甲基胆烷-1β, 3β, 5α, 6β-四醇。