Guaianolides and an ethylcyclohexane lactone from Andriala integrifolia
摘要:
The reinvestigation of the aerial parts of Andriala integrifolia afforded three new lactones, a guaianolide, a guaianolide glucopyranoside and an ethylcyclohexane lactonic derivative with a quinol structure, together with five known compounds. Their structures were established by high held H-1 NMR spectroscopy and chemical correlation.
Eight new guaianolide type glycosides, ixerins M, N, O, P, Q, R, S and T, in addition to 8-epidesacylcynaropicrin-glucoside and macrocliniside A, have been isolated from the methanol extract of lxeris stolonifera A. GRAY (Compositae). The structures of the new compounds were determined on the basis of chemical and spectral data.