A LFER Kinetic Study of The Reaction of 5-Substituted Orotic Acids with Diazodiphenylmethane
作者:Fathi H. Assaleh、Aleksandar D. Marinković、Jasmina B. Nikolić、Saša Ž. Drmanić、Danijela Brković、Nevena Prlainović、Bratislav Ž. Jovanović
DOI:10.1002/kin.20997
日期:2016.7
Linear free energy relationships (LFER) were applied to the kinetic data for the reaction of 5‐substituted orotic acids, series 1, with diazodiphenylmethane (DDM) in N,N–dimethylformamide and compared with results obtained for 2‐substituted benzoic acids, series 2. The correlation analysis of the kinetic data with σ substituent parameters was carried out using SSP (single substituent parameter) methods
Heteroaryl-Fused 2-Phenylisothiazolone Inhibitors of Cartilage Breakdown
作者:Stephen W. Wright、Joseph J. Petraitis、Matthew M. Abelman、Douglas G. Batt、Lori L. Bostrom、Ronald L. Corbett、Carl P. Decicco、Susan V. Di Meo、Bruce Freimark
DOI:10.1021/jm00045a012
日期:1994.9
The synthesis, biological evaluation, and structure-activity relationships of a series of N-phenyl heteroaryl-fused isothiazolones are described. These isothiazolones have been shown to exhibit potent, dose-dependent inhibition of IL-1 beta-induced breakdown of proteoglycan in a cartilage organ culture assay. This effect is likely due to inhibition of MMP activation and a consequent reduction in MMP activity following IL-1 beta stimulation. Thus these compounds potentially represent simple, non-peptidic disease-modifying agents for the treatment of arthritic diseases. To examine the effects of structure on in vitro activity, three general features of the molecules were varied, substituents on the pendant N-phenyl group, the position of ring fusion to the isothiazolone, and substituents on the fused ring peri to the isothiazolone sulfur.
AlMe<sub>3</sub>-Promoted Formation of Amides from Acids and Amines
作者:Jianqing Li、Krishnananthan Subramaniam、Daniel Smith、Jennifer X. Qiao、Jie Jack Li、Jingfang Qian-Cutrone、John F. Kadow、Gregory D. Vite、Bang-Chi Chen
DOI:10.1021/ol203007s
日期:2012.1.6
In the presence of AlMe3, amines can be directly coupled with acids through dimethylalumlnum amide Intermediates to form the corresponding amides. A wide range of amines and acids including less nucleophilic amines, bulky amines, unprotected secondary amino acids, and acids with poor solubility were coupled smoothly to give the desired products in 55-98% yields.
The synthesis of pyrimidineisothiazolones. The effect of temperature on the addition of aryl amines to functionalized pyrimidines.
作者:Carl P. Decicco、David J. Nelson
DOI:10.1016/s0040-4039(00)61393-x
日期:1993.12
A new synthesis for the hither-to-unknown pyrimidine isothiazolones 1 and 2 is detailed. The low temperature selectivity of amine nucleophiles on 6-chloropyrimidine-5-acylbromides (12) for the acylbromide over the ring chloride provides a new procedure for the functionalization of 5-carboxypyrimidines.
Behrend, Justus Liebigs Annalen der Chemie, 1887, vol. 240, p. 11