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Triterpenoid saponins from Campsiandra guayanensis
Alessandra Braca1, Ayman F Abdel-Razik, Jeannette Mendez
1Dipartimento di Chimica Bioorganica e Biofarmacia, Università di Pisa, Via Bonanno 33, 56126 Pisa, Italy. braca@farm.unipi.it
Journal of Natural Products
|February 28, 2006
Abstract:
Thirteen new triterpenoid saponins (1-13) were isolated from the aerial parts of Campsiandra guayanensis. Their structures were elucidated by 1D and 2D NMR experiments including 1D-TOCSY, DQF-COSY, ROESY, HSQC, and HMBC spectroscopy, as well as ESIMS analysis. The aglycon moieties of 1-10 were assigned as oleanane derivatives and those of 11-13 as lupane derivatives.