title: New triterpenoid saponins with strong alpha-glucosidase inhibitory activity from the roots of Gypsophila oldhamiana.
abstract: Seven new triterpenoid saponins (1-7), have been isolated and elucidated from the roots of Gypsophila oldhamiana together with five known triterpenoid saponins (8-12). These saponins which could be classified into three series: 3-O-monoglucosides (1, 8, 9), 28-O-monoglucosides (2-4, 12) and 3, 28-O-bidesmosides (5-7, 10, 11), have been evaluated for their alpha-glucosidase inhibition activity. As a result, the preliminary structure-activity relationships were discussed based on the position of sugar linkage attached to the aglycone, and 28-O-monoglucosides 2-4 and 12 showed significant inhibitory activities on alpha-glucosidase.
authors.affiliation: Department of Natural Medicinal Chemistry, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing 210009, People's Republic of China.
authors.forename: Jian-Guang
authors.initials: JG
authors.lastname: Luo
authors.forename: Li
authors.initials: L
authors.lastname: Ma
authors.forename: Ling-Yi
authors.initials: LY
authors.lastname: Kong
mesh_terms: D065089:Glycoside Hydrolase Inhibitors; D018517:Plant Roots / Q000737:chemistry; D010946:Plants, Medicinal / Q000737:chemistry*; D012503:Saponins / Q000737:chemistry* / Q000494:pharmacology*; D013329:Structure-Activity Relationship; D014315:Triterpenes
chemical_list: D065089:Glycoside Hydrolase Inhibitors; D012503:Saponins; D014315:Triterpenes