A 4'-O-sulphated analogue of wedeloside, a new flavanone, 7,4'-dihydroxy-8,3'-dimethoxyflavanone and its related chalcone, together with the 4'-O-beta-D-glucopyranoside of the latter, and a number of known compounds were isolated from the aerial parts of Wedelia asperrima. Their structures were established by spectroscopic techniques and by synthesis of the flavanone and chalcone.
synthesis, compositae, flavanones, Wedelia asperrima, 4 '-O-sulphowedeloside, chalcones, chalcone glycosides
Publication DOI: 10.1016/S0031-9422(97)00599-2Journal NLM ID: 0151434Publisher: Elsevier
Institutions: Research School of Chemistry, The Australian National University, Canberra, Australia
Methods: 13C NMR, 1H NMR, EI-MS, FAB-MS, HPLC, UV, extraction, optical rotation measurement, CC, HR-FAB-MS, CTLC
Found