Eight new anthocyanins, ternatins C1-C5 and D3 and preternatins A3 and C4 from young Clitoria ternatea flowers

Eight new anthocyanins 1-8 (ternatins C1, C2, C3, C4, C5, and D3 and preter natins A3 and C4) were isolated from Clitoria ternatea flowers. By the appl ication of chemical, UV-vis, and FABMS methods, the structures of 1-6 were postulated as delphinidin 3-malonylglucoside having 3'-GCGC-5'-G, 3'-GCGCG- 5'-G, 3'-GC-5'-G, 3'-GCG-5'-G, 3'-G-5'-G, and 3'-GC-5'-GC,and compounds 7 a nd 8 as delphinidin 3-glucoside having 3'-GCG-5'-GCG and 3'-GCG-5'-G as sid e chains, respectively, in which Dp is delphinidin, G is D-glucose, and C i s p-coumaric acid. The structures of the compounds 1, 3-5, and 7 were estab lished completely by additional NMR methods.