title: Indoleacetic acid derivatives from the seeds of Ziziphus jujuba var. spinosa.
abstract: A pair of diastereoisomers, the N-glycosylated derivatives of dioxindole-3-hydroxy-3-acetic acid 1-2, and their conjugates with flavonoids 3-8, was isolated from the seeds of Ziziphus jujuba var. spinosa. Their structures were elucidated by NMR spectroscopic analyses, and the absolute configurations were determined by circular dichroism method. Compounds 3-10 were evaluated for the antioxidant capacity, using the radical absorbance capacity (ORAC) assay.
authors.affiliation: Institute of Traditional Chinese Medicine & Natural Products, College of Pharmacy, Jinan University, China.
authors.forename: Min
authors.initials: M
authors.lastname: Li
authors.affiliation: College of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, China; Quality Assurance Center, North China Pharmaceutical Group Semisyntech Co., Ltd., Shijiazhuang 052165, China.
authors.forename: Yu
authors.initials: Y
authors.lastname: Wang
authors.affiliation: Institute of Traditional Chinese Medicine & Natural Products, College of Pharmacy, Jinan University, China.
authors.forename: Bun
authors.initials: B
authors.lastname: Tsoi
authors.affiliation: Department of Chemistry, Lanzhou University, Lanzhou 730000, China.
authors.forename: Xiao-jie
authors.initials: XJ
authors.lastname: Jin
authors.affiliation: Institute of Traditional Chinese Medicine & Natural Products, College of Pharmacy, Jinan University, China; Anti-stress and Health Research Center, College of Pharmacy, Jinan University, Guangzhou, China.
authors.forename: Rong-Rong
authors.initials: RR
authors.lastname: He
authors.affiliation: Department of Chemistry, Lanzhou University, Lanzhou 730000, China; State Key Laboratory of Quality Research in Chinese Medicine, Macau Institute for Applied Research in Medicine and Health, Macau University of Science and Technology, Taipa, Macau, China.
authors.forename: Xiao-jun
authors.initials: XJ
authors.lastname: Yao
authors.affiliation: Institute of Traditional Chinese Medicine & Natural Products, College of Pharmacy, Jinan University, China. Electronic address: daiyi1004@163.com.
authors.forename: Yi
authors.initials: Y
authors.lastname: Dai
authors.affiliation: Institute of Traditional Chinese Medicine & Natural Products, College of Pharmacy, Jinan University, China; Anti-stress and Health Research Center, College of Pharmacy, Jinan University, Guangzhou, China.
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Kurihara
authors.affiliation: Institute of Traditional Chinese Medicine & Natural Products, College of Pharmacy, Jinan University, China; College of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, China.
authors.forename: Xin-Sheng
authors.initials: XS
authors.lastname: Yao
mesh_terms: D000975:Antioxidants / Q000737:chemistry; D005419:Flavonoids / Q000737:chemistry; D007210:Indoleacetic Acids / Q000737:chemistry*; D015394:Molecular Structure; D012639:Seeds / Q000737:chemistry*; D031957:Ziziphus / Q000737:chemistry*
chemical_list: D000975:Antioxidants; D005419:Flavonoids; D007210:Indoleacetic Acids
keywords: Antioxidant activity; Chemical ingredients; Flavone C-glycosides; Indoleacetic acid derivatives; Ziziphus jujuba