A New Peroxy‐multiflorane Triterpene Ester from the Processed Seeds of Trichosanthes kirilowii

Abstract

AbstractA new peroxy‐multiflorane triterpene ester, (3α,5α,8α,20α)‐5,8‐epidioxymultiflora‐6,9(11)‐diene‐3,29‐diol 3,29‐dibenzoate (1), was isolated from the processed seeds of Trichosanthes kirilowii, together with the two known related derivatives 2 and 3, and the two known steroids 4 and 5. Compounds 2, 4, and 5 were isolated from the genus Trichosanthes for the first time. The structure of compound 1 was established by NMR, HR‐MS, and CD analyses. Compounds 1–3 were tested for their in vitro cytotoxicity against human‐tumor cell lines (Hela, HL‐60, and MCF‐7) and anti‐inflammatory activity (LPS‐induced B lymphocyte cells) with the MTT method.