RESUMO
Melastoma dodecandrum is commonly used in the folk. It has been widely used in China by She, Yao, Miao, and other ethnic minorities, which has the effects of blood activating and hemostasis, elimination of swelling and stasis, and heat-clearing and detoxifying. In this review, the relevant researches about M. dodecandrum were summarized from the textual research, resource distribution, standards, pharmacological activity, chemical composition and clinical application aspects, which provides a theoretical basis for the further study and clinical application of M. dodecandrum.
RESUMO
OBJECTIVE: To study the chemical constituents of Alocasia macrorrhiza (L.) Schott. METHODS: Chemical constituents were extracted by organic solvents, isolated and purified by chromatographic techniques with silica gel, polyamide, ODS, Sephadex LH-20, semi-preparative HPLC and recrystallization. Their structures were identified on the basis of physicochemical properties and spectral data analyses of MS and NMR, et al. RESULTS: Nine compounds were isolated from its rhizoma and identified as glycosmisic acid (1), N-trans-feruloyltyramine(2), grossamide(3), protocatechuic acid(4), borneol acetate(5), vanillic acid(6), methyl 4-hydroxybenzoate(7), β-daucosterol(8), and β-sitosterol(9). CONCLUSION: Compounds 1-9 were isolated from Alocasia macrorrhiza for the first time.