Synthetic hydrogen bonding receptors as models of transacylase enzymes
摘要:
A family of synthetic receptors has been prepared containing a barbiturate binding site and an appended thiol nucleophile. These are shown to cause large accelerations in the thiolysis reactions of barbiturate active ester derivatives. The size of the acceleration is shown to depend critically on the length and flexibility of the spacer that links the thiol to the receptor.
Transition-state stabilization and molecular recognition: acceleration of phosphoryl-transfer reactions by an artificial receptor
摘要:
An artificial receptor that is complementary to the proposed trigonal-bipyramidal intermediate for phosphoryl-transfer reactions has been designed. Kinetic measurements with P-31 NMR methods show that the receptor causes up to a 10-fold accleration in the aminolysis of phosphorodiamidic chloride derivatives, proceeding via an associative mechanism.
Synthetic hydrogen bonding receptors as models of transacylase enzymes
作者:Paolo Tecilla、Vrej Jubian、Andrew D. Hamilton
DOI:10.1016/0040-4020(94)00907-c
日期:1995.1
A family of synthetic receptors has been prepared containing a barbiturate binding site and an appended thiol nucleophile. These are shown to cause large accelerations in the thiolysis reactions of barbiturate active ester derivatives. The size of the acceleration is shown to depend critically on the length and flexibility of the spacer that links the thiol to the receptor.
Transition-state stabilization and molecular recognition: acceleration of phosphoryl-transfer reactions by an artificial receptor
作者:Paolo Tecilla、Suk Kyu Chang、Andrew D. Hamilton
DOI:10.1021/ja00182a017
日期:1990.12
An artificial receptor that is complementary to the proposed trigonal-bipyramidal intermediate for phosphoryl-transfer reactions has been designed. Kinetic measurements with P-31 NMR methods show that the receptor causes up to a 10-fold accleration in the aminolysis of phosphorodiamidic chloride derivatives, proceeding via an associative mechanism.