Silver(I)-Catalyzed Reaction between Pyrazole and Propargyl Acetates: Stereoselective Synthesis of the Scorpionate Ligands (E)-Allyl-gem-dipyrazoles (ADPs)
摘要:
The reaction between readily accessible pyrazole and propargyl acetates in the presence of Ag(I) catalyst yielded a new class of (E)-allyl-gem-dipyrazole scorpionate ligands: 1-aryl-2-N-pyrazolyl allyl acetates and 1,3-dipyrazolyl-3-arylpropene. The reaction showed broad substrate scope, and various functional and protecting groups were tolerated under the reaction conditions. The palladium(II) scorpionate complex could thus be easily prepared and successfully employed in Suzuki-Miyaura cross-couplings in water.
4-and 5-alkynyloxindoles and 4-and 5-alkenyloxindoles
申请人:Hoffmann-La Roche Inc.
公开号:US06313310B1
公开(公告)日:2001-11-06
Disclosed are 4- and 5-alkynyloxindoles as well as 4- and 5-alkenyloxindoles that inhibit or modulate protein kinases, in particular JNK protein kinases. The compounds of the invention and their pharmaceutically acceptable salts, and prodrugs of said compounds, are useful as anti-inflammatory agents, particularly useful in the treatment of rheumatoid arthritis. Also disclosed are pharmaceutical compositions containing the foregoing compounds, methods for the treatment and/or control of inflammation, particularly in the treatment or control of rheumatoid arthritis using these compounds, as well as intermediates useful in the preparation of compounds of the invention.
4- AND 5-ALKYNYLOXINDOLES AND 4- AND 5-ALKENYLOXINDOLES
申请人:F. HOFFMANN-LA ROCHE AG
公开号:EP1149092B1
公开(公告)日:2003-10-29
US6313310B1
申请人:——
公开号:US6313310B1
公开(公告)日:2001-11-06
[EN] 4- AND 5-ALKYNYLOXINDOLES AND 4- AND 5-ALKENYLOXINDOLES<br/>[FR] 4- ET 5-ALKYNYLOXINDOLES ET 4- ET 5-ALCENYLOXINDOLES
申请人:HOFFMANN LA ROCHE
公开号:WO2000035906A2
公开(公告)日:2000-06-22
4- and 5-alkynyloxindoles as well as 4- and 5-alkenyloxindoles having formula (I) and (II), wherein R?1, R2, R3, R11, R12¿, X and z have the meaning indicated in the specification, inhibit or modulate protein kinases, in particular JNK protein kinases and are useful as anti-inflammatory agents, particularly in the treatment of rheumatoid arthritis.
Silver(I)-Catalyzed Reaction between Pyrazole and Propargyl Acetates: Stereoselective Synthesis of the Scorpionate Ligands (<i>E</i>)-Allyl-<i>gem</i>-dipyrazoles (ADPs)
作者:M. Bhanuchandra、Malleswara Rao Kuram、Akhila K. Sahoo
DOI:10.1021/jo401867e
日期:2013.12.6
The reaction between readily accessible pyrazole and propargyl acetates in the presence of Ag(I) catalyst yielded a new class of (E)-allyl-gem-dipyrazole scorpionate ligands: 1-aryl-2-N-pyrazolyl allyl acetates and 1,3-dipyrazolyl-3-arylpropene. The reaction showed broad substrate scope, and various functional and protecting groups were tolerated under the reaction conditions. The palladium(II) scorpionate complex could thus be easily prepared and successfully employed in Suzuki-Miyaura cross-couplings in water.