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Published on: August 16, 2018
New peroxy triterpenes from the aerial roots of Ficus microcarpa
1Department of Chemistry, National Taiwan University, Taipei, Taiwan, Republic of China.
Abstract:
Six new triterpenes, 3 beta-acetoxy-12 beta,13 beta-epoxy-11 alpha-hydroperoxyursane (1), 3 beta-acetoxy-11 alpha-hydroperoxy-13 alpha H-ursan-12-one (2), 3 beta-acetoxy-1 beta,11 alpha-epidioxy-12-ursene (3), (20S)-3 beta-acetoxylupan-29-oic acid (4), (20S)-3 beta-acetoxy-20-hydroperoxy-30-norlupane (5), and 3 beta-acetoxy-18 alpha-hydroperoxy-12-oleanen-11-one (6), together with 3 beta-acetoxy-12-oleanen-11-one (7), were isolated from the aerial roots of Ficus microcarpa. Compounds 1-3, 5, and 6 were characterized as new peroxytriterpenes. The structures of 3 and 6 were confirmed by X-ray crystallography, and their structures were elucidated by spectroscopic and chemical methods.
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