Lanthanide Catalyzed Cyclization of Uridine 3'-p-Nitrophenyl Phosphate.

Lanthanide Catalyzed Cyclization of Uridine 3'-p-Nitrophenyl Phosphate.
复制标题

镧系元素催化尿苷 3-对硝基苯基磷酸酯的环化。

DOI:
10.1006/bioo.2000.1179
复制
发表时间:
2000
影响因子:
5.1
通讯作者:
Cleland,WW
Cleland,WW
中科院分区:
化学1区
文献类型:
--
作者:
Rishavy,MA;Hengge,AC;Cleland,WW

文献摘要

参考文献

被引文献

相似文献

稳态动力学和15N同位素效应已被用于研究尿苷3'-对硝基苯磷酸酯的环化反应。环化反应由过渡金属离子和镧系元素催化,许多磷酸酯的取代反应也是如此。动力学分析表明,铒催化的环化反应涉及2'-OH基团的协同去质子化和离去基团的离开。过渡态非常晚,有很大程度的键断裂到离去基团,这可能是由于铒对 PO 键的很大程度的极化所致。
Steady state kinetics and15N isotope effects have been used to study the cyclization reaction of uridine 3′-p-nitrophenyl phosphate. The cyclization reaction is catalyzed by transition metal ions and lanthanides, as are substitution reactions of many phosphate esters. Kinetic analysis reveals that the erbium-catalyzed cyclization reaction involves the concerted deprotonation of the 2′-OH group and departure of the leaving group. The transition state is very late, with a very large degree of bond cleavage to the leaving group, which could be due to a large degree of polarization of the PO bonds by erbium.
碱性磷酸酶的 Zn(II)-113Cd(II) 和 Zn(II)-Mg(II) 杂化物。
DOI: --
发表时间: 1984
期刊: The Journal of biological chemistry
影响因子: --
作者:
Gettins,P;Coleman,JE
通讯作者: Coleman,JE
DOI: 10.1021/ja00091a003
发表时间: 1994-06-15
影响因子: 15
作者:
HENGGE, AC;EDENS, WA;ELSING, H
通讯作者: ELSING, H
DOI: 10.1021/ja952306p
发表时间: 1996-02-21
影响因子: 15
作者:
Deal, KA;Hengge, AC;Burstyn, JN
通讯作者: Burstyn, JN
DOI: 10.1021/bi00198a012
发表时间: 1994-08-16
期刊: BIOCHEMISTRY
影响因子: 2.9
作者:
BONE, R;FRANK, L;ATACK, JR
通讯作者: ATACK, JR
DOI: 10.1021/ja00223a031
发表时间: 1988-07-20
影响因子: 15
作者:
DAVIS, AM;HALL, AD;WILLIAMS, A
通讯作者: WILLIAMS, A