We have previously reported a general synthetic approach to analogues of coenzyme A (CoA) which involves enzymatic synthesis of a general CoA analogue synthon having a thioester linkage in place of the amide bond nearest the thiol group (Martin et al. J. Am. Chem. Soc. 1994, 116, 4660). We report here the synthesis of a second CoA analogue synthon 1c which has the amide bond more distant from the thiol group replaced with a ...