Oligomeric proanthocyanidin glycosides of Clementsia semenovii. II

The structures of proanthocyanidins CS-3 and CS-4, isolated from the roots of Clementsia semenovii have been established on the basis of chemical and spectral studies. CS-3 is 7-O-(6-O-galloyl-beta-D-Glcp (6) under right arro w O-beta-D-Glcp (6) under right arrow O-beta-D-Glcp (6) under right arrow O -beta-D-Glcp (6) under right arrow O-beta-D-Glcp)-(+)-catechin-(4 alpha-8)- (-)-epilligallocatechin-(4 beta-8)-(+)-catechin-(4 alpha-8)-epigallocatechi n- (4 beta-8)-(-)-epigallocatechin-(4 beta-8)-(-)-epigallocatechin, and CS- 4 is 3-O-gallyl-7-O-[6-O-galloyl-beta-D-Glcp (6) under right arrow O-beta-D -Glcp (6) under right arrow O-beta-D-Glcp-(+)-gallocatechin-(4 alpha-8)-[()-catechin-(4 alpha-8)-(3-O-galloyl-(-)-epigallocatechin](2)-(4 beta-8)-(-) -epicatechin.