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Updated: May 22, 2026

A Tripeptide-Stabilized Nanoemulsion of Oleic Acid
Published on: February 27, 2019
New lanostane-type triterpene acids from wolfiporia extensa
Gaimei She1, Nailiang Zhu, Shuai Wang
1School of Chinese Pharmacy, Beijing University of Chinese Medicine, No, 6, Zhonghuan South Road, Wangjing District, Beijing, 100102, People's Republic of China. shirb@126.com.
Background:
Dried sclerotia of Wolfiporia extensa (Polyporaceae) is used to invigorate the spleen and to tranquilize the mind in Chinese herbal medicine. Lanostane-type triterpene acids were regard as major secondary metabolites from dried sclerotia of W. extensa.
Results:
Three new lanostane-type triterpene acids, 3-epi-benzoyloxyl-dehydrotumulosic acid (1), 3-epi-(3'-O-methyl malonyloxy)-dehydrotumulosic acid (2) and 3-epi-(3'-hydroxy-3'-methylglutaryloxyl)-dehydrotumulosic acid (3), were isolated from the sclerotia of W. extensa, together with 3 known lanostane derivatives (4-6). Their structures were elucidated on the basis of spectroscopic analysis, including 1D and 2D-NMR techniques.
Conclusion:
Six lanostane derivatives including three new triterpene acids and three known compounds were reported from the sclerotia of W. extensa in this paper.
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