作者:Amar R. Mohite、Ravindra S. Phatake、Pooja Dubey、Mohamed Agbaria、Alexander I. Shames、N. Gabriel Lemcoff、Ofer Reany
DOI:10.1021/acs.joc.0c01431
日期:2020.10.16
conditions expedited by the presence of substoichiometric amounts of thiourea additives is presented. The amount of thiourea added dictates the pathway of the reaction, which may diverge from the desired halogenation reaction toward oxidation of the alcohol, in the absence of thiourea, or toward starting material recovery when excess thiourea is used. Both bromination and chlorination were highly efficient
Deoxygenativechlorination of carbonyl compounds using the HMe2SiCl/FeCl3/EtOAc and HMeSiCl2/FeCl3/EtOAc systems has been systemically investigated. The HMe2SiCl-FeCl3 system showed the advantages of good substrate applicability, mild reaction conditions, simple operation, low cost, and easy availability of raw materials. Also, it provided a simple and efficient synthesis route for carbonyl deoxychlorination
cobalt-catalyzed enantioconvergent radical Negishi C(sp3)–C(sp2) cross-coupling of racemic benzyl chlorides with arylzinc reagents has been developed in good yield with moderate enantioselectivities. This strategy provides an expedient access toward a range of enantioenriched 1,1-diarylmethanes. Key to this discovery is the utilization of a chiral multidentate anionic N,N,P-ligand to strongly coordinate with the
NOVEL 2,3-DIHYDRO-1H-IMIDAZO(1,2-A)PYRIMIDIN-5-ONE DERIVATIVES, PREPARATION THEREOF, AND PHARMACEUTICAL USE THEREOF
申请人:Brolio Maurice
公开号:US20120142679A1
公开(公告)日:2012-06-07
The invention relates to the novel materials of formula (I), where R
1
is an optionally substituted L-aryl or
-heteroaryl, such that L is: an alkyl or CO, or L
X, with L
being an alkyl and X being O or S; R
2
is H or an alkyl; R
3
is an alkyl optionally substituted by Hal; and R
4
is Hou Hal, wherein said materials are in any isomeric form and the salts thereof, to be used as drugs.
[EN] PROSTAGLANDIN ENDOPEROXIDE H SYNTHASE BIOSYNTHESIS INHIBITORS<br/>[FR] INHIBITEURS DE LA BIOSYNTHESE DE LA PROSTAGLANDINE ENDOPEROXYDE H SYNTHASE
申请人:ABBOTT LAB
公开号:WO2000024719A1
公开(公告)日:2000-05-04
The present invention describes pyridazinone compounds of formula (I) which are cyclooxygenase (COX) inhibitors, and in particular, are selective inhibitors of cyclooxygenase-2 (COX-2). COX-2 is the inducible isoform associated with inflammation, as opposed to the constitutive isoform, cyclooxygenase-1 (COX-1) which is an important 'housekeeping' enzyme in many tissues, including the gastrointestinal (GI) tract and the kidneys. The selectively of these compounds for COX-2 minimizes the unwanted GI and renal side-effects seen with currently marketed non-steroidal anti-inflammatory drugs (NSAIDs).