作者:Rakesh K. Asthana、Narendra K. Sharma、Dinesh K. Kulshreshtha、Sunil K. Chatterjee
DOI:10.1016/0031-9422(91)85308-m
日期:1991.1
Abstract The structure of new xanthonefromSwertia chirayita has been established as 1,5-dihydroxy-3,8-dimethoxy xanthone (chiratol) on the basis of spectral and chemical evidence. Two other xanthones, i.e. swerchirin (1,8-dihydroxy-3,5-dimethoxy xanthone) and 7- O -methyl swertianin (1,8-dihydroxy-3,7-dimethoxy xanthone) have been isolated. Swerchirin was identified as the hypoglycaemic principle