Chemical constituents from the tuber of Cremastra appendiculata

To study the chemical constituents of “Shan-Ci-Gu” (the tuber of Cremastra appendiculata (D.Don) Makino), the compounds were isolated with silica gel and reverse phase silica gel as well as Sephadex column chromatographic method. Their structures were elucidated on the basis of modern spectra technology. Seven compounds were isolated and identified as 5-methoxybibenzyl-3,3′-di-O-β-D-glucopyranoside (1), militarine (2), loroglossin (3), protocatechuic acid (4), succinic acid (5), gastrodin (6), and daucosterol (7). Compound 1 is a new compound. Compounds 2-6 were isolated from this plant for the first time.