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■ Neorhusflavanone, a New Biflavanone from Wax-tree

Fa-ching Chen,* Yuh-meei Lin, and Yuh-chi Lin

*Department of Chemistry, National Taiwan University, Roosevelt Road Section 4, Taipei 106, Taiwan, R.O.C.

Abstract

Neorhusflavanone was identified as 4’,4’’’,5,5’’,7,7’’-hexahydroxy-8,8’’-biflavanone, i.e. 8,8’’-binaringenin, by i., u.v., n.m.r., and mass spectroscopic comparison with the synthetic compound, and conversion into cupressuflavone derivatives using NBS as dehydrogenating agent.