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Abstract Title:

Terpenoids with alpha-glucosidase inhibitory activity from the submerged culture of Inonotus obliquus.

Abstract Source:

Phytochemistry. 2014 Dec ;108:171-6. Epub 2014 Oct 18. PMID: 25446238

Abstract Author(s):

You-Min Ying, Lin-Yan Zhang, Xia Zhang, Hai-Bo Bai, Dong-E Liang, Lie-Feng Ma, Wei-Guang Shan, Zha-Jun Zhan

Article Affiliation:

You-Min Ying

Abstract:

Lanostane-type triterpenoids, inotolactones A and B, a drimane-type sesquiterpenoid, inotolactone C, and five known terpenoids 6β-hydroxy-trans-dihydroconfertifolin, inotodiol, 3β,22-dihydroxyanosta-7,9(11),24-triene, 3β-hydroxycinnamolide, and 17-hydroxy-ent-atisan-19-oic acid, were isolated from the submerged culture of chaga mushroom, Inonotus obliquus. Their structures were characterized by spectroscopic methods, including MS and NMR (1D and 2D) spectroscopic techniques. Inotolactones A and B, examples of lanostane-type triterpenoids bearing α,β-dimethyl, α,β-unsaturated δ-lactone side chains, exhibited more potent alpha-glucosidase inhibitory activities than the positive control acarbose. This finding might be related to the anti-hyperglycemic properties of the fungus and to its popular role as a diabetes treatment. In addition, a drimane-type sesquiterpenoid and an atisane-type diterpenoid were isolated from I. obliquus.

Study Type : In Vitro Study

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