mitragyna inermis/悪性腫瘍

OBJECTIVE To study the chemical constituents and bioactivity of the stem bark of Mitragyna diversifolia. METHODS Compounds were isolated by various chromatographic methods. Their structures were elucidated on the basis of spectroscopic techniques (IR, UV, MS, and NMR), and they were evaluated for

The chemical composition of total alkaloids from leaves and roots of Guiera senegalensis was investigated. Three beta-carboline alkaloids were purified: in addition to harman and tetrahydroharman, known in roots and leaves, harmalan (dihydroharman) was isolated for the first time from roots of

OBJECTIVE To study the constituents of Mitragyna inermis that have an anti-tumor activity on Bel-7402 of hepatic carcinoma. METHODS The compounds were isolated by column chromatography on silica gel, ODS, Sephadex LH-20 separately and their structures were elucidated by chemical and spectral