title: Isolation and structural elucidation of some sapogenols from Abrus cantoniensis.
abstract: After hydrolysis of the saponin fraction of the roots of Abrus cantoniensis, a new triterpenoid sapogenol, cantoniensistriol, was isolated together with sophoradiol, soyasapogenol B and soyasapogenol A. The structures of cantoniensistriol and sophoradiol were elucidated by spectroscopic methods. On the basis of the relation between cantoniensistriol and soyasapogenol A, the steric assignment of the C-21 and C-22 hydroxyl groups of the latter was discussed.
authors.affiliation: Chinese Medicinal Material Research Centre, The Chinese University of Hong Kong.
authors.forename: T C
authors.initials: TC
authors.lastname: Chiang
authors.forename: H M
authors.initials: HM
authors.lastname: Chang