Chemical and Pharmaceutical Bulletin
Online ISSN : 1347-5223
Print ISSN : 0009-2363
ISSN-L : 0009-2363
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Two New Polyporusterones Isolated from the Sclerotia of Polyporus umbellatus
Wei-Wei ZhouWen-Han LinShun-Xing Guo
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2007 Volume 55 Issue 8 Pages 1148-1150

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Abstract

In the course of searching for marker components, two new polyporusterones were isolated from the sclerotia of Polyporus umbellatus, together with another three known analogs. The structures of the new ones were elucidated as (20S,22R,24R)-16,22-epoxy-3β,14α,23β,25-tetrahydroxyergost-7-en-6-one (1) and (23R,24R,25R)-23,26-epoxy-3β,14α,21α,22α-tetrahydroxyergost-7-en-6-one (2) by chemical and spectroscopic means, including HR-FAB-MS, 1D- and 2D-NMR.

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© 2007 The Pharmaceutical Society of Japan
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