1987 Volume 35 Issue 9 Pages 3597-3602
The absolute configuration of the homoisoflavonoidal components, 4-O-methylsappanol, 4-O-methylepisappanol, sappanone B, 3-deoxysappanone B and 3'-deoxysappanone B, from Caesalpinia sappan L. were determined on the basis of chemical transformations and the optical properties.