Jinming G, Lin H, Jikai L
Department of Phytochemisty, Kunming Institute of Botany, the Chinese Academy of Sciences, 650204, Kunming, People's Republic of China.
Steroids. 2001 Oct;66(10):771-5. doi: 10.1016/s0039-128x(01)00105-2.
From the fruiting bodies of Ascomycetes Tuber indicum, a new steroidal glucoside with polyhydroxy ergosterol nucleus, tuberoside (2), has been isolated along with additional four known ergosterol derivatives, (22E, 24R)-ergosta-7, 22-dien-3beta, 5alpha, 6beta-triol (1), 5alpha, 8alpha-epidioxy-(22E, 24R)-ergosta-6, 22-dien-3beta-ol (3), (22E, 24R)-ergosta-5, 22-dien-3beta-ol (4), and (22E, 24R)-ergosta-4, 6, 8(14), 22-tetraen-3-one (5). The structure of new compound was established as 3-O-beta-D-glucopyranosyl-(22E, 24R)-ergosta-7, 22-dien-5alpha, 6beta-diol (2) on the basis of chemical and spectroscopic means ((1)H NMR, (13)C NMR, HMQC, HMBC, MS, and IR). This is the first example of isolation of a polyhydroxylated ergosterol glucoside from higher fungi in nature.
从印度块菌子实体中,分离出一种具有多羟基麦角甾醇核的新甾体糖苷——块菌素(2),以及另外四种已知的麦角甾醇衍生物:(22E,24R)-麦角甾-7,22-二烯-3β,5α,6β-三醇(1)、5α,8α-环氧-(22E,24R)-麦角甾-6,22-二烯-3β-醇(3)、(22E,24R)-麦角甾-5,22-二烯-3β-醇(4)和(22E,24R)-麦角甾-4,6,8(14),22-四烯-3-酮(5)。通过化学和光谱方法(1H NMR、13C NMR、HMQC、HMBC、MS和IR)确定新化合物的结构为3-O-β-D-吡喃葡萄糖基-(22E,24R)-麦角甾-7,22-二烯-5α,6β-二醇(2)。这是自然界中首次从高等真菌中分离出多羟基化麦角甾醇糖苷的实例。