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Structures of Ganoderic Acid A and B, Two New Lanostane Type Bitter Triterpenes from Ganoderma lucidum (FR.) KARST.

✍ Scribed by Takashi Kubota; Yukihiro Asaka; Iwao Miura; Hideo Mori

Publisher
John Wiley and Sons
Year
1982
Tongue
German
Weight
470 KB
Volume
65
Category
Article
ISSN
0018-019X

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✦ Synopsis

Abstract

The structures of two new bitter triterpenes, ganoderic acid A and B. isolated from a mushroom Ganoderma lucidum (FR.) Karst. (Polyporaceae) were determined as 1 and 2 on the basis of spectral data. Ganoderic acid A is a novel highly oxidized triterpene bearing a boat‐shaped A‐ring of lanostane.

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Spiromarienonols A and B: Two New 7(8→9)
Spiromarienonols A and B: Two New 7(8→9)abeo-Lanostane-Type Triterpene Lactones from the Stem Bark of Abies mariesii
✍ Reiko Tanaka; Shun-ichi Wada; Hitoshi Aoki; Shunyo Matsunaga; Takao Yamori 📂 Article 📅 2004 🏛 John Wiley and Sons 🌐 German ⚖ 191 KB

## Abstract Two new skeletal triterpene lactones, spiromarienonols A (**1a**) and B (**2a**), were isolated from the stem bark of __Abies mariesii__ Masters (Pinaceae). Based on spectral data and biogenetic considerations, their unique three‐dimensional structures were determined to be (3__R__,7__S