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Hydrolysis of the crude saponin extracted from the leaves of Panax notoginseng (Burk.) F. H. Chen yields five sapogenins which are separated by column chromatography. Two of these are identified to be panaxadiol and panaxatriol whose structures were elucidated earlier. The third sapogenin ist found to be Dammar-20(22)en-3beta, 12beta,-26-triol by carbon-13 NMR. The structure of the fourth sapogenin is established by X-ray diffractometry and carbon-13 NMR to be 20 ( R)-Dammaran-3beta, 12beta, 20, 25-tetrol.

An alkaloid of the molecular formula C (21)H (19)NO (6) was isolated from the roots of berberis actinacantha. Substructures were derived from proton and carbon-13-NMR data. Single-crystal x-ray diffractometry identified the alkaloid as 15( R,S)-3,4-dimethoxy-11,12-methylenedioxy-8,14-dioxo-hexahydro- ISO-homoprotoberberin. ORTEP plots, bond angles, assigned carbon-13 and proton NMR data are given.

Hydrolysis of the crude saponin isolated from the leaves of PANAX NOTOGINSENG (Burk.) F. H. Chen yields five sapogenins which are separated by column chromatography. The structures of four of those were elucidated earlier to be panaxadiol, panaxatriol, dammar-20(22)en-3beta, 12beta,26-triol and 20(R)-dammaran-3beta, 12beta,20,25-tetrol. The fifth sapogenin is identified as an oxepane derivative probably arising from acid catalyzed dehydration and rearrangement of panaxadiol. The structure as proposed from NMR data was confirmed by single-crystal X-ray diffractometry.