title: Steroidal glycoalkaloids from the berries of Solanum distichum.
abstract: Two steroidal glycoalkaloids, Solanidine 3-O-[alpha-L-rhamnopyranosyl-(1'' --> 4)-[alpha-L-rhamnopyranosyl-(1' --> 2)]-beta-D-glucopyranoside] (1) and Solanidine 3-O-[alpha-L-rhamnopyranosyl-(1'' --> 4)-beta-D-glucopyranoside] (2) commonly known as alpha-chanonine and beta 2-chanonine, were isolated from the berries of Solanum distichum. The structures of the isolated compounds were studied by 1D and 2D NMR techniques and FAB MS analysis. The 13C NMR signal assignments and direct elucidation of the glycoside linkages were established. Glycoalkaloids level in the dried berries, determined by a simple colorimetric method, was found to be 5.08 +/- 0.18 g%.
authors: Faculty of Pharmacy, Department of Pharmacognosy, Beni-Sueif University, Beni-Sueif, Egypt. wssmd3000@yahoo.com
authors: Sameh
authors: S
authors: Abouzid
authors: Nermeen
authors: N
authors: Fawzy
authors: Nebal
authors: N
authors: Darweesh
authors: Yutaka
authors: Y
authors: Orihara
mesh_terms: D005638:Fruit / Q000737:chemistry; D019906:Nuclear Magnetic Resonance, Biomolecular; D012991:Solanaceous Alkaloids / Q000737:chemistry / Q000302:isolation & purification*; D032322:Solanum / Q000737:chemistry*; D016339:Spectrometry, Mass, Fast Atom Bombardment
chemical_list: D012991:Solanaceous Alkaloids