Chemical and Pharmaceutical Bulletin p. 1756 - 1760 (1997)
Update date:2022-08-11
Topics:
Ishizuka, Takaaki
Yaoita, Yasunori
Kikuchi, Masao
Four new sterols, 5α,6α-epoxy,(22E,24R)-ergosta-8(14),22-diene- 3β,7β-diol (1), (22E,24R)-ergosta-8,22-diene-3β,5α,6β,7α-tetrol (2), (22E,24R)-ergosta-7,9(11),22-triene-3β,5α,6β-triol (3) and 3β,5α,6β- trihydroxy-(22E,24R)ergost-22-en-7-one (4), have been isolated from the fruit bodies of Grifola frondosa (FR.) S. F. GRAY (Polyporaceae) together with fourteen known ones (518), of which two (5 and 6) are reported for the first time from a natural source. The structures of these compounds were elucidated on the basis of spectral data.
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