Triterpenoid saponins from Rubus ellipticus var. obcordatus.
Ten new triterpenoid saponins (1-10), named rubusides A-J, and 21 known saponins (11-31) were isolated from the roots of Rubus ellipticus var. obcordatus. The structures of 1-10 were established on the basis of spectroscopic analyses, mainly NMR and MS, and chemical degradations. The compounds demonstrated inhibitory activities against alpha-glucosidase with IC50 values in the range 0.65-3.09 mM.
Li
Wei
W
Faculty of Pharmaceutical Sciences, Toho University, Miyama 2-2-1, Funabashi, Chiba 274-8510, Japan. liwei@phar.toho-u.ac.jp
Fu
Hongwei
H
Bai
Hong
H
Sasaki
Tatsunori
T
Kato
Hiroyoshi
H
Koike
Kazuo
K
D004365:Drugs, Chinese Herbal / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D065089:Glycoside Hydrolase Inhibitors; D020128:Inhibitory Concentration 50; D015394:Molecular Structure; D019906:Nuclear Magnetic Resonance, Biomolecular; D018517:Plant Roots / Q000737:chemistry; D027824:Rosaceae / Q000737:chemistry*; D012503:Saponins / Q000737:chemistry / Q000494:pharmacology; D014315:Triterpenes / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology
D004365:Drugs, Chinese Herbal; D065089:Glycoside Hydrolase Inhibitors; D012503:Saponins; D014315:Triterpenes