Evaluation of human neutrophil elastase inhibitory effect of iridoid glycosides from Hedyotis diffusa. 2010

Guang-Hua Xu, and Young-Hee Kim, and Seung-Wook Chi, and Soo-Jin Choo, and In-Ja Ryoo, and Jong-Seog Ahn, and Ick-Dong Yoo
Korea Research Institute of Bioscience and Biotechnology, Daejeon 305-806, Republic of Korea.

Five iridoid glycosides were isolated from the MeOH extract of Hedyotis diffusa, and their structures were elucidated as E-6-O-p-methoxycinnamoyl scandoside methyl ester (1), Z-6-O-p-methoxycinnamoyl scandoside methyl ester (2), E-6-O-p-feruloyl scandoside methyl ester (3), E-6-O-p-coumaroyl scandoside methyl ester (4), and Z-6-O-p-coumaroyl scandoside methyl ester (5) by interpretation of their spectroscopic data. All the isolated compounds were evaluated for human neutrophil elastase inhibitory effect, and compound 1 showed potent activity with an IC(50) value of 18.0muM. The molecular docking simulation suggested a structural model for the inhibition of human neutrophil elastase by compound 1.

UI MeSH Term Description Entries
D010936 Plant Extracts Concentrated pharmaceutical preparations of plants obtained by removing active constituents with a suitable solvent, which is evaporated away, and adjusting the residue to a prescribed standard. Herbal Medicines,Plant Extract,Extract, Plant,Extracts, Plant,Medicines, Herbal
D011480 Protease Inhibitors Compounds which inhibit or antagonize biosynthesis or actions of proteases (ENDOPEPTIDASES). Antiprotease,Endopeptidase Inhibitor,Endopeptidase Inhibitors,Peptidase Inhibitor,Peptidase Inhibitors,Peptide Hydrolase Inhibitor,Peptide Hydrolase Inhibitors,Peptide Peptidohydrolase Inhibitor,Peptide Peptidohydrolase Inhibitors,Protease Antagonist,Protease Antagonists,Antiproteases,Protease Inhibitor,Antagonist, Protease,Antagonists, Protease,Hydrolase Inhibitor, Peptide,Hydrolase Inhibitors, Peptide,Inhibitor, Endopeptidase,Inhibitor, Peptidase,Inhibitor, Peptide Hydrolase,Inhibitor, Peptide Peptidohydrolase,Inhibitor, Protease,Inhibitors, Endopeptidase,Inhibitors, Peptidase,Inhibitors, Peptide Hydrolase,Inhibitors, Peptide Peptidohydrolase,Inhibitors, Protease,Peptidohydrolase Inhibitor, Peptide,Peptidohydrolase Inhibitors, Peptide
D003198 Computer Simulation Computer-based representation of physical systems and phenomena such as chemical processes. Computational Modeling,Computational Modelling,Computer Models,In silico Modeling,In silico Models,In silico Simulation,Models, Computer,Computerized Models,Computer Model,Computer Simulations,Computerized Model,In silico Model,Model, Computer,Model, Computerized,Model, In silico,Modeling, Computational,Modeling, In silico,Modelling, Computational,Simulation, Computer,Simulation, In silico,Simulations, Computer
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D001665 Binding Sites The parts of a macromolecule that directly participate in its specific combination with another molecule. Combining Site,Binding Site,Combining Sites,Site, Binding,Site, Combining,Sites, Binding,Sites, Combining
D019272 Leukocyte Elastase An enzyme that catalyzes the hydrolysis of proteins, including elastin. It cleaves preferentially bonds at the carboxyl side of Ala and Val, with greater specificity for Ala. EC 3.4.21.37. Lysosomal Elastase,Neutrophil Elastase,PMN Elastase,Polymorphonuclear Leukocyte Elastase,Granulocyte Elastase,Elastase, Granulocyte,Elastase, Leukocyte,Elastase, Lysosomal,Elastase, Neutrophil,Elastase, PMN,Elastase, Polymorphonuclear Leukocyte,Leukocyte Elastase, Polymorphonuclear
D032064 Hedyotis A plant genus of the family RUBIACEAE. Members contain anthraquinones and iridoids. H. diffusa is used in DRUGS, CHINESE HERBAL. Hedyoti
D039823 Iridoids A type of MONOTERPENES, derived from geraniol. They have the general form of cyclopentanopyran, but in some cases, one of the rings is broken as in the case of secoiridoid. They are different from the similarly named iridals (TRITERPENES). Iridoid,Iridoid Derivatives,Secoiridoids,Iridoid Aglycones,Aglycones, Iridoid,Derivatives, Iridoid

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