期刊
PHYTOCHEMISTRY
卷 62, 期 2, 页码 229-237出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/S0031-9422(02)00486-7
关键词
Clitoria ternatea L.; Phaseoleae; butterfly pea; kaempferol 3-O-(2-O-alpha-rhamnosyl-6-O malonyl)-beta-glucoside; quercetin 3-O-(2-O-alpha-rhamnosyl-6-O-malonyl) -beta-glucoside; myricetin 3-O-(2,6-di-O-alpha-rhamnosyl)-beta glucoside
Three flavonol glycosides, kaempferol 3-O-(2-O-alpha-rhamnosyl-6-O-malonyl)-beta-glucoside, quercetin 3-O-(2-O-alpha-rhamnosyl-6-O-malonyl)-beta-glucoside, and myricetin 3-O-(2,6-di-O-alpha-rhamnosyl)-beta-glucoside were isolated from the petals of Clitoria ternatea cv. Double Blue, together with eleven known flavonol glycosides. Their structures were identified using UV, MS, and NMR spectroscopy. They were characterized as kaempferol and quercetin 3-(2(G)- rhamnosylrutinoside)s, kaempferol, quercetin, and myricetin 3-neohesperidosides, 3-rutinosides, and 3-glucosides in the same tissue. In addition, the presence of myricetin 3-O-(2-O-alpha-rhamnosyl-6-O-malonyl)-beta-glucoside was inferred from LC/MS/MS data for crude petal extracts. The flavonol compounds identified in the petals of C. ternatea differed from those reported in previous studies. (C) 2003 Elsevier Science Ltd. All rights reserved.
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