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Macrophyllicin, a saponin from Primula macrophylla
V U Ahmad1, M G Shah, F V Mohammad
1H.E.J. Research Institute of Chemistry, University of Karachi, Pakistan.
Phytochemistry
|April 1, 1993
Abstract:
A new triterpenoid saponin, macrophyllicin has been isolated from the methanolic extract of the whole plant of Primula macrophylla. On the basis of chemical and spectral evidence, the structure of macrophyllicin was determined as 3-O-[alpha-L-rhamnopyranosyl-(1-->2)-beta-D-glucopyranosyl- (1-->2)-beta-D-galactopyranosyl-(1-->2)-beta-D-glucuronopyranosyl] -6 beta,16 alpha,28-trihydroxy-olean-12-ene. The 2D NMR experiments were useful in providing complete information on the structure of macrophyllogenin, a new sapogenin.