Two New 3, 4-seco-Lanostane Triterpenoids from Stems of Kadsura heteroclita / 中草药·英文版

Objective: To find new triterpenoids from the stems of Kadsura heteroclite. Methods: The constituents were isolated and purified by various column chromatographies. Their structures were elucidated mainly on the basis of 1 D (1H-, 13C-, and DEPT), 2 D (HSQC, HMBC, and ROESY) NMR and mass spectral analysis, also compared with literature data. Results: Four triterpenoids were isolated and identified as 3-ethyl manwuweizate (1), 26-methyl manwuweizate (2), manwuweizic acid (3), and anwuweizonic acid (4). Conclusion: Compounds 1 and 2 are new triterpenoids.