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Sterols from the fungus Catathelasma imperiale
Author(s) -
Yang ShengPing,
Xu Jun,
Yue JianMin
Publication year - 2003
Publication title -
chinese journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.28
H-Index - 41
eISSN - 1614-7065
pISSN - 1001-604X
DOI - 10.1002/cjoc.20030211031
Subject(s) - chemistry , triol , fungus , diene , ring (chemistry) , stereochemistry , organic chemistry , diol , botany , natural rubber , biology
Eight ergostane‐type sterols and three their derivatives (one mono‐linoleate and two mono‐glucosides) were isolated from the ethyl acetate soluble fraction of the fungus Catathelasma imperiale. Two of them are novel compounds, namely 22 E , 24 R ‐ergosta‐7,22‐diene‐3β,5α‐diol‐6β‐inoleate (1) and 22 E ,24 R ‐ergosta‐7,22‐diene‐3β,5β,6α‐triol (5) with an uncommon cis‐ fused A/B ring. Structures of these compounds were demonstrated on the basis of their chemical evidences and spectroscopic methods, especially 2D NMR techniques.