TWO NEW HYDROLYZABLE TANNINS, CARPINERINS A AND B, FROM GALLS OF CARPINUS TSCHONOSKII

摘要

Two new hydrolyzable tannins, carpinerins A (1) and B (2), together with ten known tannins 3-12, were isolated from the galls on bud of Carpinus tschonoskii, and the structures of 1 and 2 were elucidated using spectroscopic data, primarily NMR and MS, and chemical means. Most of isolated tannins including carpinerin B (2) exhibited inhibitory effects on the growth of the root of cress (Lepidium sativum L.) seedling at 1 x 10~(-4) mol/L.