Abstract
The structure of spergulagenin A, a new genuine sapogenol isolated (second major) from the root of Mollugo spergula L. (Molluginaceae) along with oleanolic acid and methyl spergulagenate (1a) (major), has been established as 3 on the basis of chemical investigations and X-ray structure evidence. The full account of chemical evidence is described. Spergulagenin A (3) possesses a new migrated-hopane skeleton, in which 22-CH3 in the ordinary hopane framework is migrated to C-21, and the probable biogenetic pathway of spergulagenin A has been presumed.
