FURTHER ACYLATED SECOIRIDOID GLUCOSIDES FROM GENTIANA-RHODANTHA

Investigation of the metabolites of Gentiana rhodantha by LC-UV and LC -mass spectrometry (MS) resulted in the isolation and identification o f two further high molecular weight secoiridoid glycosides, rhodanthos ides B and C. These compounds contain four secoiridoid glucoside moiet ies, two of which were linked with a monoterpene dicarboxylic acid. Th eir structures were established by LC-UV, TSP LC-MS, CF-FAB LC-MS, ES/ LC-MS, FAB-MS and 1D and 2D NMR data in combination with chemical reac tions. Copyright (C) 1996 Elsevier Science Ltd