Oligomeric proanthocyanidin glycosides ofClementsia semenovii

Five new proanthocyanidins have been isolated from the roots ofClementsia semenovii A. Bor. The structures of two of these compounds have been established by various chemical and physical methods: 7-0-6-0-galloyl-β-D-Glcp 0-β-D-Glcp 0-βD-Glcp 0-β-D-Glcp ]-(+)-gallocatechin-(4a-8)-(+)-gallo-catechin-(4a-8)-(-)-epigallocatechin-(4β-8)-(-)-epigallocatechin-(4β-8)-(-) -epigalloactechin-(4β-8)-(+)-catechin - CS-1 and 3-0-galloyl-7-0-(β-D-Glcp 0-B-D-Glcp)-(-)-epigallocatechin-(4β-8)-3-0-galloyl-(-)-epigallocatechin]-(4β-8)-3-0-galloyl-5-0-(6-0-galloyl-0-β-D-Glcp)]-(-)-epicatechin - CS-2. 1) Institute of the Chemistry of Plant Substances, Academy of Sciences of the Republic of Uzbekistan, Tashkent, fax (371) 120 64 75; 2) Osh State University, Osh, fax (33 222) 2 23 73. Translated from Khimiya Prirodnykh Soedinenii, No. 6, pp. 756–763, November–December, 1998.