Three New Biflavonoids from Chinese Dragon's Blood, Dracaena cochinchinensis

被引：0
|
作者：
Guan, Jing
Guo, Shun-Xing [1 ]
机构：
[1] Chinese Acad Med Sci, Inst Med Plant Dev, Beijing 100193, Peoples R China
来源：
NATURAL PRODUCT COMMUNICATIONS | 2012年 / 7卷 / 05期
关键词：
H-1; NMR; C-13; 2D NMR; circular dichroism; structure elucidation; Dracaena cochinchinensis; biflavonoids; ABSOLUTE-CONFIGURATION;
D O I：
暂无
中图分类号：
R914 [药物化学];
学科分类号：
100701 ;
摘要：
Three new biflavonoids, named (2R gamma S)-3'-methoxy-8-methylsocotrin-4'-ol (1), (2S gamma R)-3'-methoxy-8-methylsocotrin-4'-ol (2), and (2R gamma R)-8-methylsocotrin-4'-ol (3), were isolated from Chinese Dragon's blood [Dracaena cochinchinensis (Lour.) S. C. Chen], together with two known ones. The structures of these new biflavonoids were elucidated by a combination of HR-ESI-MS, H-1 NMR, C-13 NMR, HMQC, and HMBC spectra. The absolute configurations of compounds 1-4 were determined by quantum chemical calculation of the circular dichroism spectrum and comparison with the experimental CD spectrum.
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页码：591 / 594
页数：4
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