Structure of Anthocyanins Isolated from Purple Leaves of Perilla ocimoides L. var. crispa Benth and Their Isomerization by Irradiation of Light
1990 Volume 54 Issue 7 Pages 1745-1751
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1990 Volume 54 Issue 7 Pages 1745-1751
Seven pigments including four new anthocyanins, caffeylmalonylcyanin, malonyl-cis-shisonin, caffeylcyanin and cis-shisonin, were isolated from Perilla leaves. The complete structures of these new anthocyanins were elucidated to be cyanidin 3-(6-O-trans-caffeylglucoside)-5-(6-O-malonylglucoside), 3-(6-O-cis-p-coumarylglucoside)-5-(6-O-malonylglucoside), 3-(6-O-trans-caffeylglucoside)-5-glucoside and 3-(6-O-cis-p-coumarylgIucoside)-5-glucoside, respectively. The cis-trans isomerization and stability of these pigments are also described.
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