title: Flavonol galactoside caffeiate ester and homoisoflavones from Caesalpinia millettii HOOK. et ARN.
abstract: Chemical examination of the stems of Caesalpinia millettii HOOK. et ARN. led to the isolation of new flavonol glycoside caffeiate ester (1) and homoisoflavone (2), along with four known homoisoflavones: eucomin (3), bonducellin (4), 8-methoxybonducellin (5) and intricatinol (6). The structures of 1 and 2 were established to be tamarixetin 3-O-(6''-O-E-caffeoyl)-beta-D-galactopyranoside (1) and (Z)-7-hydroxy-8-methoxy-3-(4-methoxybenzyl) chroman-4-one (2) on the basis of detailed analyses of physical, chemical, and spectral data. Compounds 3-6 were isolated from this plant for the first time.
authors.affiliation: Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.
authors.forename: Ping
authors.initials: P
authors.lastname: Chen
authors.forename: Jun-Shan
authors.initials: JS
authors.lastname: Yang
mesh_terms: D029911:Caesalpinia / Q000737:chemistry*; D044948:Flavonols / Q000737:chemistry / Q000302:isolation & purification*; D007529:Isoflavones / Q000737:chemistry / Q000302:isolation & purification*; D016339:Spectrometry, Mass, Fast Atom Bombardment; D013055:Spectrophotometry, Infrared
chemical_list: D044948:Flavonols; D007529:Isoflavones