Brainin A, a novel flavanol from Brainea insignis

Ming Hui Yang ^a,b, ,
Le Cai ^a ,
Zhi Gang Tai ^a ,
Xue Qiong Yang ^a ,
Zhong Tao Ding ^a

a Key Laboratory of Medicinal Chemistry for Nature Resource, Ministry of Education, School of Chemical Science and Technology, Yunnan University, Kunming 650091, China;
b School of Pharmaceutical Sciences and Chemistry, Dali University, Dali 671000, China

Received Date: 23 August 2010

Fund Project: This work was financially supported by the Natural Science Foundation of China (Nos. 30560178 and 20964005), as well as by a program for New Century Excellent Talents in University from MOE (No. NCET-08-0925) and a grant from Education Department of Yunnan Province (No. 08Y10302).

A novel flavanol bearing phenylpropionic acid moiety at C-4 through a C-C bonding, named brainin A (1), was isolated from the rhizomes of Brainea insignis. Its structure was elucidated on the basis of spectral data including 2D NMR and HR-ESI-MS.

Brainin A, a novel flavanol from Brainea insignis

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