[Chemical structure of capsicuoside A from fruits of Capsicum annuum].
Five compounds were isolated from Capsicum annuum by means of various chromatographic techniques (silica gel, Sephadex LH-20, MCI GEL CHP-20P and HPLC), and their structures were determined as luteolin-7-O-[2"-O-(5"-O-sinapoyl)-beta-D-apiofuranosyl]-beta-D-glucopyranoside (1), uridine (2), adenosine (3), 7-hydroxy-6-methoxy cinnamic acid ethyl ester (4) and 7-hydroxy cinnamic acid ethyl ester (5) by extensive spectroscopic analyses (UV, IR, MS, 1D- and 2D-NMR). Among them, compound 1 is a new flavone glycoside named as capsicuoside A, and cmpounds 2-5 are isolated for the first time from the fruits of C. annuum.
State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China.
Hui-Xin
HX
Chen
Chang-An
CA
Geng
Tuan-Wu
TW
Cao
Xue-Mei
XM
Zhang
Yun-Bao
YB
Ma
Xiao-Yan
XY
Huang
Ji-Jun
JJ
Chen
D002212:Capsicum / Q000737:chemistry*; D047309:Flavones / Q000737:chemistry*; D005638:Fruit / Q000737:chemistry; D005960:Glucosides / Q000737:chemistry*
D047309:Flavones; D005960:Glucosides; C584603:capsicuoside A