Marine sterols. XVI. Polyhydroxysterols of the soft corals of the Andaman and Nicobar coasts. 1. Isolation of (24S)-24-methylcholest-5-ene-3.BETA.,25.XI.,26-triol and (24S)-24-methylcholestane-3.BETA.,5.BETA.,6.ALPHA.,25-tetrol.
作者:Masaru KOBAYASHI、Fuyuko KANDA、Chunduri Venkata Lakshmana RAO、Saridi Madhava Dileep KUMAR、Golakoti TRIMURTULU、Chaganti Bheemasankara RAO
DOI:10.1248/cpb.38.1724
日期:——
Nine polyhydroxysterols were isolated from the lipid extract of two Sclerophytum sp. soft corals collected in the Andaman and Nicobar islands. Of these, seven compounds (1, 4a-6c) had previously been isolated from southern Japan soft coral Sarcophyton glaucum. The structures of the two new steroids 2 and 3 were determined as (24S)-24-methylcholest-5-ene-3β, 25ζ, 26-triol and (24S)-24-methylcholestane-3β, 5β, 6α, 25-tetrol, respectively, by means of spectroscopic analyses, and by correlation with the known compounds.
从安达曼和尼科巴群岛采集的两种软珊瑚的脂质提取物中分离出了九种多羟基甾醇。其中,7 种化合物(1、4a-6c)以前曾从日本南部软珊瑚 Sarcophyton glaucum 中分离出来。通过光谱分析以及与已知化合物的相关性,确定了两种新固醇 2 和 3 的结构,分别为 (24S)-24-methylcholest-5-ene-3β, 25ζ, 26-triol 和 (24S)-24-methylcholestane-3β, 5β, 6α, 25-tetrol。