New triterpenes from a Chinese medicine, goreishi |
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| Authors: | A Numata C Takahashi T Miyamoto M Yoneda P M Yang |
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| Institution: | Osaka University of Pharmaceutical Sciences, Matsubara, Japan. |
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| Abstract: | Besides serratagenic acid, three new ursane-type triterpenes, named goreishic acids I (1), II (2), and III (3), were isolated from a Chinese medicine, Goreishi (the feces of Trogopterus xanthipes Milne-Edwards). The structures of 1, 2 and 3 were respectively determined as 2 alpha,3 beta-dihydroxyursa-12,18-dien-28-oic acid, 2 alpha,3 beta-dihydroxy-23-norursa-12,18-dien-28-oic acid and 2 alpha,3 beta-dihydroxy-24-norursa-12,18-dien-28-oic acid on the basis of spectroscopic evidence. |
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