α-Substitution Effects on the Ease ofS→N-Acyl Transfer in Aminothioesters
摘要:
In S‐acylcysteines and homocysteines, the efficacy and rate of S→N‐acyl transfer (5 and 6 cyclic TSs) vary with the size of S‐acyl group. Conformational and quantum chemical calculations indicate that the spatial distance, b(N‐C), between the terminal amine and the thioester carbon is shortened by α‐C(O)X (X = OH, OMe, NH2) substituents.
α-Substitution Effects on the Ease ofS→N-Acyl Transfer in Aminothioesters
摘要:
In S‐acylcysteines and homocysteines, the efficacy and rate of S→N‐acyl transfer (5 and 6 cyclic TSs) vary with the size of S‐acyl group. Conformational and quantum chemical calculations indicate that the spatial distance, b(N‐C), between the terminal amine and the thioester carbon is shortened by α‐C(O)X (X = OH, OMe, NH2) substituents.