Cross coupling of 3-bromopyridine and sulfonamides (R1NHSO2R2·R1=H, Me, alkyl; R2=alkyl and aryl) catalyzed by CuI/1,3-di(pyridin-2-yl)propane-1,3-dione
摘要:
N-(3-Pyridinyl)-substituted secondary and tertiary sulfonamides have been synthesized in good to excellent yields by the reaction of 3-bromopyridine with primary and secondary alkyl and aryl sulfonamides (MeSO2NH2, MeSO2NHMe, TolSO(2)NH(2), TolSO(2)NHMe, 1,3-propanesultam, and 1,4-butanesultam), catalyzed by CuI (20 mol %) and 1,3-di(pyridin-2-yl)propane-1,3-dione (20 mol %) with K2CO3 (200 mol %) in DMF (0.17 M for ArBr) at 110-120 degrees C over 36-40 h. 2-Bromopyridine, 4-bromopyridine, and a wide variety of substituted phenyl bromides can also be successfully coupled with sulfonamides under these reaction conditions. (C) 2009 Elsevier Ltd. All rights reserved.
The invention provides novel inhibitors of hedgehog signaling that are useful as a therapeutic agents for treating malignancies where the compounds have the general formula I:
wherein A, X, Y R
1
, R
2
, R
3
, R
4
, m and n are as described herein.
The invention provides novel inhibitors of hedgehog signaling that are useful as a therapeutic agents for treating malignancies where the compounds have the general formula I:
wherein A, X, Y R
1
, R
2
, R
3
, R
4
, m and n are as described herein.
[EN] PYRIDYL INHIBITORS OF HEDGEHOG SIGNALLING<br/>[FR] INHIBITEURS PYRIDYLES DE LA SIGNALISATION HEDGEHOG
申请人:GENENTECH INC
公开号:WO2006028958A2
公开(公告)日:2006-03-16
The invention provides novel inhibitors of hedgehog signaling that are useful as a therapeutic agents for treating malignancies where the compounds have the general formula I: wherein A, X, Y, R1, R2, R3, R4, and n are as described herein.
2-substituted-1(4)-aryl piperazines and the process for their preparation
申请人:Schering AG
公开号:US05223623A1
公开(公告)日:1993-06-29
This invention relates to novel 2-substituted-1(4)-aryl piperazines and to a process for their preparation. The compounds of this invention have been found to have cardiovascular, primarily antiarrhythmic effects.