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Articles

Two new Diels–Alder-type adducts from the stem barks of Morus yunanensis

, , , &
Pages 617-622 | Received 11 Mar 2014, Accepted 08 May 2014, Published online: 26 Jun 2014
 

Abstract

Two new Diels–Alder adducts, yunanensins B and D (1 and 2), were isolated from the stem bark of Morus yunanensis. Their structures were determined by spectroscopic analysis. Compounds 1 and 2 showed moderate antioxidant effects on liver microsomal lipid peroxidation induced by Fe2+-Cys system, with inhibitory ratios of 57.1% and 67.9% at a concentration of 10− 5 mol/l.

Acknowledgments

This work was financially supported by grants from the National Science and Technology Project of China (Nos 2012ZX09103201-043, 2012ZX09301002-002).

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