Five megastigmane glycosides have been isolated from the seeds of Trifolium alexandrinum L., of which two are known compounds, while three are new compounds showing the presence of apiofuranosyl-(1→2)-glucopyranosyl residue as a sugar moiety. The structures of the isolated compounds were established on the basis of NMR and mass spectral data.
Leguminosae, megastigmane glycosides, Trifolium alexandrinum
Publication DOI: 10.1016/S0031-9422(98)00603-7Journal NLM ID: 0151434Publisher: Elsevier
Institutions: Department of Pharmacognosy, Faculty of Pharmacy, Assiut University, Assiut, Egypt, Department of Pharmacognosy, Faculty of Pharmacy, Al-AzharUniversity, Assiut, Egypt, Institute of Pharmaceutical Sciences, Hiroshima University Schoolof Medicine, 1-2-3 Kasumi, Minami-Ku, Hiroshima 734, Japan
Methods: 13C NMR, 1H NMR, TLC, enzymatic hydrolysis, HPLC, optical rotation measurement, DEPT, COSY, HSQC, HR-FAB-MS, HCl hydrolysis
Found