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New triterpenoids from the fruiting bodies of Ganoderma lucidum and their bioactivities
Dong-Ze Liu1, Yi-Qun Zhu, Xiao-Fei Li
1Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin 300308, P. R. China. liudongze0923@sina.com.
Abstract:
Phytochemical investigation of the AcOEt extract of G. Lucidum has led to the isolation of two new triterpenoids, 1 and 2, together with five known ones, 3-7. The structures of the new compounds were identified as 12β-acetoxy-3β,7β-dihydroxy-11,15,23-trioxolanost-8-en-26-oic acid butyl ester (1) and 12β-acetoxy-3,7,11,15,23-pentaoxolanost-8-en-26-oic acid butyl ester (2) on the basis of detailed spectroscopic analysis (mass spectrometry, and 1D- and 2D-NMR experiments). The antimicrobial activities of 1 and 2 were also evaluated.
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