Four New Lignans from the Stems of Kadsura heteroclita

Abstract

Two new C₁₈ dibenzocyclooctadiene lignans named heteroclitalignans A and B (1 and 3), one new C₁₉ 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.

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