title: [Caffeoylquinic acid derivatives from stems of Akebia trifoliata].
abstract: OBJECTIVE
  To study the chemical constituents from Akebia trifoliata stems.
  
  
  METHODS
  The compounds were isolated and purified by column chromatography, and their structures were determined through spectroscopic techniques and physicochemical properties.
  
  
  RESULTS
  Six compounds were isolated from the stems of Akebia trifolita and identified as cryptochlorogenic acid methyl ester (1), neochlorogenic acid methyl ester (2), chlorogenic acid methyl ester (3), methyl 3,5-di-O-caffeoyl quinate (4), methyl 3,4-di-O-caffeoyl quinate (5) and methyl 4,5-di-O-caffeoyl quinate (6).
  
  
  CONCLUSIONS
  All compounds are isolated from Akebia genus for the first time. Compounds 1,5 and 6 demonstrate obvious inhibitory activities against α-glucosidase.
authors.affiliation: South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, China.
authors.forename: Jing
authors.initials: J
authors.lastname: Wang
authors.forename: Qiao-Lin
authors.initials: QL
authors.lastname: Xu
authors.forename: Zhong-Yu
authors.initials: ZY
authors.lastname: Zhou
authors.forename: Jian-Wen
authors.initials: JW
authors.lastname: Tan
mesh_terms: D002726:Chlorogenic Acid / Q000031:analogs & derivatives; D019684:Magnoliopsida / Q000737:chemistry*; D011801:Quinic Acid / Q000031:analogs & derivatives* / Q000737:chemistry / Q000302:isolation & purification
chemical_list: C472707:caffeoylquinic acid; D011801:Quinic Acid; D002726:Chlorogenic Acid; C478100:3,4-di-O-caffeoylquinic acid; C417238:methyl chlorogenate