title: Antioxidative flavonol glycosides from the flowers of Abelmouschus manihot.
abstract: Bioassay-guided fractionation led to the isolation of six new flavonol glycosides, floramanosides A (1), B (2), C (3), D (4), E (5), and F (6), from the flowers of Abelmouschus manihot. Their structures were elucidated by chemical and spectroscopic methods (UV, IR, HRESI-TOF-MS, 1D- and 2D-NMR). Activity screening results showed that the compounds had 2,2-diphenyl-1-picrylhydrazyl scavenging and aldose reductase inhibitory activities.
authors.affiliation: Tianjin State Key Laboratory of Modern Chinese Medicine, Nankai District, Tianjin, China.
authors.forename: Yi
authors.initials: Y
authors.lastname: Zhang
authors.forename: Wei
authors.initials: W
authors.lastname: He
authors.forename: Chunmei
authors.initials: C
authors.lastname: Li
authors.forename: Qiu
authors.initials: Q
authors.lastname: Chen
authors.forename: Lifeng
authors.initials: L
authors.lastname: Han
authors.forename: Erwei
authors.initials: E
authors.lastname: Liu
authors.forename: Tao
authors.initials: T
authors.lastname: Wang
mesh_terms: D000449:Aldehyde Reductase / Q000378:metabolism; D000975:Antioxidants / Q000737:chemistry*; D001713:Biphenyl Compounds / Q000737:chemistry; D044948:Flavonols / Q000737:chemistry*; D035264:Flowers / Q000737:chemistry*; D006027:Glycosides / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D002365:Manihot / Q000737:chemistry*; D013058:Mass Spectrometry; D015394:Molecular Structure; D010851:Picrates / Q000737:chemistry
chemical_list: D000975:Antioxidants; D001713:Biphenyl Compounds; D044948:Flavonols; D006027:Glycosides; D010851:Picrates; C004931:1,1-diphenyl-2-picrylhydrazyl; D000449:Aldehyde Reductase