Glucosides of Coumarinic and o-Coumaric Acids in the Tonka Bean

Science  08 Feb 1963:
Vol. 139, Issue 3554, pp. 496-497
DOI: 10.1126/science.139.3554.496


The β-glucosides of coumarinic and o-coumaric acids were detected in extracts of cotyledons, exocarps, and seedling leaves of the tonka bean. The existence of these compounds and the presence of a β-glucosidase having specificity for coumarinyl glucoside suggest that the tonka bean synthesizes coumarin by a pathway similar to the one found in sweetclover.