Shi She-Po, Tu Peng-Fei, Dong Cai-Xia, Jiang Dan
School of Pharmaceutical Sciences, Peking University Health Science Centre, 38 Xueyuan Road, Beijing 100083, China.
J Asian Nat Prod Res. 2006 Jan-Mar;8(1-2):73-8. doi: 10.1080/10286020500480324.
Three new alkaloids together with two known compounds have been isolated from the roots of Clematis manshurica. On the basis of their spectroscopic and chemical evidence, the new compounds were elucidated as methyl 7-ethoxy-3-indolecarbonate (2), methyl 7-O-alpha-L-rhamnopyranosyl-(1 --> 6)-beta-D-glucopyranosyl 3-indolecarbonate (3) and alpha-L-rhamnopyranosyl-(1 --> 6)-beta-d-glucopyranosyl 3-indolecarbonate (4).