3-aryl of heteroaryl-7-heteroaralkylamido cephalosporin compounds,
申请人:Merck & Co. Inc.
公开号:US05455239A1
公开(公告)日:1995-10-03
A compound of the formula I is disclosed. ##STR1## R.sup.13 represents hydrogen, NH.sub.2, C1-4 alkyl, C1-4 alkylamino or di(C1-4) alkylamino-; Y represents CH or N; Y" represents (a) CR.sup.y' R.sup.z' with R.sup.y' and R.sup.z' hydrogen, C1-6 alkyl, C.sub.3-8 cycloalkyl or C.sub.1-6 alkyl substituted with C.sub.3-8 cycloalkyl, or (b) N substituted with OR.sup.14 with R.sup.14 representing H, C.sub.1-4 alkyl or C.sub.1-4 alkyl substituted with COOH. Ar represents: ##STR2## One of R.sup.1 and R.sup.2 independently represent H, W as defined below or one of the groups (a) through (d) below, and the other represents H or W. Pharmaceutical compositions and methods of use are also included.
highly efficient, rapid and regioselective protocol was developed for the ring bromination of aromaticcompounds under mild conditions with ammonium bromide as a source of bromine source and Oxone® (potassium peroxysulfate) as an oxidant. No metal catalyst or acidic additive is required. A variety of aromaticcompounds, including methoxy, hydroxy, amino, and alkyl arenes, reacted smoothly to give the
[EN] SULFONIMIDAMIDE COMPOUNDS AS NLRP3 MODULATORS<br/>[FR] COMPOSÉS DE SULFONIMIDAMIDE EN TANT QUE MODULATEURS DE NLRP3
申请人:GENENTECH INC
公开号:WO2021150574A1
公开(公告)日:2021-07-29
Described herein are compounds of Formula (I), Formula (I-A), and Formula (I-B), solvates thereof, tautomers thereof, and pharmaceutically acceptable salts of the foregoing, Further described herein are methods of inhibiting NLRP3 using said compounds, and methods of and compositions useful in treating NLRP3-dependent disorders.
Green process development for the preparation of 2,6-dibromo-4-nitroaniline from 4-nitroaniline using bromide–bromate salts in an aqueous acidic medium
作者:Venkatanarayana Pappula、Subbarayappa Adimurthy
DOI:10.1039/c6ra13680j
日期:——
An organic solvent-free process for the preparation of 2,6-dibromo-4-nitroaniline, (an important intermediate in the synthesis of azo disperse dyes) from 4-nitroaniline using 2 : 1 bromide–bromate salts under an aqueous acidic medium at ambient conditions has been developed. The 2 : 1 bromide–bromate couple could be obtained by mixing pure NaBr/NaBrO3 salts or by adjusting the 5 : 1 mole ratio of NaBr/NaBrO3