title: QSAR Studies on andrographolide derivatives as α-glucosidase inhibitors.
abstract: Andrographolide derivatives were shown to inhibit alpha-glucosidase. To investigate the relationship between activities and structures of andrographolide derivatives, a training set was chosen from 25 andrographolide derivatives by the principal component analysis (PCA) method, and a quantitative structure-activity relationship (QSAR) was established by 2D and 3D QSAR methods. The cross-validation r(2) (0.731) and standard error (0.225) illustrated that the 2D-QSAR model was able to identify the important molecular fragments and the cross-validation r(2) (0.794) and standard error (0.127) demonstrated that the 3D-QSAR model was capable of exploring the spatial distribution of important fragments. The obtained results suggested that proposed combination of 2D and 3D QSAR models could be useful in predicting the alpha-glucosidase inhibiting activity of andrographolide derivatives.
authors.affiliation: Jinan University, Guangzhou, China. goldstar_8209@163.com
authors.forename: Jun
authors.initials: J
authors.lastname: Xu
authors.forename: Sichao
authors.initials: S
authors.lastname: Huang
authors.forename: Haibin
authors.initials: H
authors.lastname: Luo
authors.forename: Guoji
authors.initials: G
authors.lastname: Li
authors.forename: Jiaolin
authors.initials: J
authors.lastname: Bao
authors.forename: Shaohui
authors.initials: S
authors.lastname: Cai
authors.forename: Yuqiang
authors.initials: Y
authors.lastname: Wang
mesh_terms: D004224:Diterpenes / Q000737:chemistry* / Q000494:pharmacology; D065089:Glycoside Hydrolase Inhibitors; D021281:Quantitative Structure-Activity Relationship
chemical_list: D004224:Diterpenes; D065089:Glycoside Hydrolase Inhibitors; C030419:andrographolide