Three Novel Constituents from <i>Curculigo</i> <i>capitulata</i> and Revision of C-2 Stereochemistry in Nyasicoside
作者:Wen-Liang Chang、Chung-Hsiung Chen、Shoei-Sheng Lee
DOI:10.1021/np980364t
日期:1999.5.1
rhizomes of Curculigo capitulata provided three novel compounds, including two norlignan glucosides, curcapicycloside (2) and (1S,2R)-O-methylnyasicoside (3), and a phenanthrofuran, curcapital (9). The former two compounds were characterized as their tetra-O-methyl derivatives. Compound 2 possesses a glucosyl-fused skeleton with 1R,2R configuration. Biogenetic consideration led to a revision of the previously