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Two New Triterpenes from the Surface Layer of Poria cocos

✍ Scribed by Chun-Hua Yang; Shi-Fang Zhang; Wen-Ying Liu; Zun-Jian Zhang; Jing-Han Liu

Publisher
John Wiley and Sons
Year
2009
Tongue
German
Weight
174 KB
Volume
92
Category
Article
ISSN
0018-019X

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✦ Synopsis

Abstract

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Two new triterpenes, poricoic acid AE (1) and poricoic acid CE (2), were isolated from the surface layer of the mushroom Poria cocos (Schw.) Wolf, together with four known triterpenes, 3‐O‐acetyldehydroeburicoic acid, 3‐oxolanosta‐7,9(11),24(31)‐trien‐21‐oic acid, dehydrotrametenolic acid, and poricoic acid A. The structures of the two new triterpenes were elucidated as 16__α__‐hydroxy‐3,4‐seco‐lanosta‐4(28),7,9(11),24(31)‐tetraene‐3,21‐dioic acid‐3‐ethyl ester (1) and 3,4‐secolanosta‐4(28),7,9(11),24(31)‐tetraene‐3,21‐dioic acid‐3‐ethyl ester (2) mainly on the basis of HR‐ESI‐MS, EI‐MS, and 2D‐NMR analyses.

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