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-β-D-Glcp→6O-β-D-Glcp→6O-β-D-Glcp→6O-β-D-Glcp→6O-β-D-Glcp)-(+)-catechin-(4α-8)-(−)-epigallocatechin-(4β-8)-(+)-catechin-(4α-8)-(−)-epigaLLocatechin-(4β-8)-(−)-epigallocatechin-(4β-8)-(−)-epigallocatechin, and CS-4 is 3-O-galloyl-7-O-[6-O-galloyl-β-D-Glcp→6O-β-D-Glcp→6O-β-D-Glcp-(+)-gallocatechin-(4α-8)-[(+)-catechin-(4α-8)-(3-O-galloyl-(−)-epigallocatechin]2-(4β-8)-(−)-epicatechin.
proanthocyanidin glycoside, epicatechin, catehin, Clementsia semenovii
Publication DOI: 10.1007/BF02238207Journal NLM ID: 0151571Publisher: Tashkent: Izdatelstvo Fan
Institutions: Institute of the Chemistry of Plant Substances, Academy of Sciences of the Republic of Uzbekistan, Tashkent, Uzbekistan, Osh State University, Osh, USSR
Methods: 13C NMR, IR, TLC, enzymatic hydrolysis, MS, alkaline hydrolysis, UV, optical rotation measurement, methylation analysis, reduction, PC, HCl hydrolysis, sulfuric acid hydrolysis, thiolylic cleavage
Found