Two Unusual Flavanol Derivatives from Brainea insignis

Two new flavanol derivatives, bearing phenylpropionic acid moiety at C-4 through a C--C bonding, named brainin B （1） and brainin C （2）, were isolated from Brainea insignis. Their structures were elucidated by NMR and MS spectrometry, Brainins B and C were tested for their antioxidant properties in D...

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Published inChinese journal of chemistry Vol. 30; no. 6; pp. 1323 - 1326
Main Author 杨明惠 蔡乐 沈晓静 赵冕 尹田鹏 丁中涛
Format Journal Article
LanguageEnglish
Published Weinheim WILEY-VCH Verlag 01.06.2012
WILEY‐VCH Verlag
Wiley
Wiley Subscription Services, Inc
Subjects
Antioxidants
Brainea insignis
Chemistry
Chemistry, Multidisciplinary
DPPH
DPPH radical scavenging activity
flavanol
Physical Sciences
Science & Technology
Spectrometry
抗氧化性能
自由基清除
苏铁
苯丙酸
衍生物
醇
黄烷
Brainea insignis
DPPH radical scavenging activity
flavanol
CONSTITUENTS
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Summary:Two new flavanol derivatives, bearing phenylpropionic acid moiety at C-4 through a C--C bonding, named brainin B （1） and brainin C （2）, were isolated from Brainea insignis. Their structures were elucidated by NMR and MS spectrometry, Brainins B and C were tested for their antioxidant properties in DPPH （2,2-diphenyl-l-picryl- hydrazyl） radical scavenging, and both compounds displayed potent antioxidant activities.
Bibliography:31-1547/O6
Yang, Minghui Cai, Le Shen, Xiaojing Zhao, Mian Yin, TianpengDing, Zhongtao＊＇~（-j-qbi~）
Brainea insignis, flavanol, DPPH radical scavenging activity
Two new flavanol derivatives, bearing phenylpropionic acid moiety at C-4 through a C--C bonding, named brainin B （1） and brainin C （2）, were isolated from Brainea insignis. Their structures were elucidated by NMR and MS spectrometry, Brainins B and C were tested for their antioxidant properties in DPPH （2,2-diphenyl-l-picryl- hydrazyl） radical scavenging, and both compounds displayed potent antioxidant activities.
the Natural Science Foundation of China - No. 20964005, 30560178, 21002084
a Doctoral Program Foundation of Dali University - No. 2010-05
ark:/67375/WNG-C7BV55S5-D
istex:A0E25B331CEC10D0BDBE4C4A2F60FFC2330F81CB
the program for New Century Excellent Talents in University from MOE - No. NCET-08-0925
the grant from the Natural Science Foundation of the Yunnan Province - No. 2010CD017
ArticleID:CJOC201200158
ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 14
ISSN:1001-604X
1614-7065
DOI:10.1002/cjoc.201200158