Steroidal glycoalkaloids from the berries of Solanum distichum.
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%.
Abouzid
Sameh
S
Faculty of Pharmacy, Department of Pharmacognosy, Beni-Sueif University, Beni-Sueif, Egypt. wssmd3000@yahoo.com
Fawzy
Nermeen
N
Darweesh
Nebal
N
Orihara
Yutaka
Y
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
D012991:Solanaceous Alkaloids