Journal
CHEMICAL & PHARMACEUTICAL BULLETIN
Volume 55, Issue 4, Pages 655-657Publisher
PHARMACEUTICAL SOC JAPAN
DOI: 10.1248/cpb.55.655
Keywords
Caesalpinia millettii; tamarixetin; homoisoflavone; 8-methoxyisobonducellin; flavonol glycoside caffeiate ester
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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.
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