Synthesis and characterisation of acyl coenzyme A derivatives of aromatic carboxylic acids.

Acyl CoA derivatives of a number of cinnamic and benzoic acids have been synthesised via the appropriate acyl phenyl thiol esters. The reaction has potential application in the preparation of acyl CoA derivatives of radiolabelled aromatic carboxylic acids. UV absorption spectra have been determined for the CoA thiol esters following their purification by gel permeation chromato­ graphy. By comparison of the extinction in the the hydroxamate assay of Lipman and Tuttle, extinction coefficients for the series.