在这里,我们报道了一种新的一锅法,用于从羧酸开始的SO 2 F 2介导的亲核酰基取代反应。机理研究表明,SO 2 F 2介导的酸活化是通过酸酐进行的,然后将其转化为相应的酰基氟。四丁基氯化铵或溴化物可加速酰基氟的形成。优化的卤化物加速条件可用于以30-80%的产率合成酰氟,而酯,酰胺和硫代酯的产率为72-96%,而无需对每个亲核试剂进行重新优化。
A versatile strategy for the design and synthesis of novel ADP conjugates and their evaluation as potential poly(ADP-ribose) polymerase 1 inhibitors
作者:Yuliya V. Sherstyuk、Alexandra L. Zakharenko、Mikhail M. Kutuzov、Polina V. Chalova、Maria V. Sukhanova、Olga I. Lavrik、Vladimir N. Silnikov、Tatyana V. Abramova
DOI:10.1007/s11030-016-9703-x
日期:2017.2
aromatic acid residue. A number of conjugates containing aromatic carboxylic acids were found to inhibit poly(ADP-ribose) synthesis catalyzed by poly(ADP-ribose) polymerase-1 (PARP-1). A new class of potential PARP-1 inhibitors mimicking \(\hbox NAD}^+}\), a substrate in the PARP-1 catalyzed reaction, was proposed. Graphical Abstract
A Simple Method for Synthesis of Active Esters of Isonicotinic and Picolinic Acids
作者:Jørn Christensen
DOI:10.3390/60100047
日期:——
A method for preparation of the p-nitrophenyl-, N-hydroxysuccinimidyl- and pentafluorophenyl esters of isonicotinic and picolinicacids from the corresponding acids is reported.
Methyl groups of 6-methylnicotinic acid and 2,6-dimethylnicotinic acid were deuterated by an H-D exchange reaction under conditions of 1% NaOD/D(2)O on heating. With a condensation reaction between the D-labeled nicotinic acid derivative and N-hydroxysuccinimide with 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide hydrochloride, the nicotinoylating agents, 1-(6-methyl[D(3)]nicotinoyloxy)succinimide (2c)
The present invention relates to novel alkanoyl-substituted heterocyclic derivatives which are cysteine protease inhibitors; the pharmaceutically acceptable salts and N-oxides thereof; their uses as therapeutic agents and the methods of their making.
potent angiotensin-convertingenzyme (ACE) inhibitors, 1-(N2-substituted L-lysyl-gamma-D-glutamyl)octahydro-1H-indole-2-carboxylic acids, was synthesized; various acyl groups were introduced at the alpha-amino group of the N-terminal P1 Lys. The effect of the N2-acyl groups on in vitro inhibitory activity and oral antihypertensive effect was examined. All of the synthesized N-acyl tripeptides were found