Four new lignans from the stems of Kadsura heteroclita.

Planta medica

PubMedID: 16534740

Wang W, Liu J, Liu R, Xu Z, Yang M, Wang W, Liu P, Sabia G, Wang X, Guo D. Four new lignans from the stems of Kadsura heteroclita. Planta Med. 2006;72(3):284-8.
Two new C(18) dibenzocyclooctadiene lignans named heteroclitalignans A and B (1 and 3), one new C(19) homolignan named heteroclitalignan C(4) and one new natural product named heteroclitalignan D(2), together with the four known lignans kadsurarin (5), kadsulignan E (6), d-epigalbacin, and meso-dihydroguaiaretic acid were isolated from the stems of Kadsura heteroclita. The structures of these compounds were characterized by extensive 1D and 2D NMR spectral data analysis.