Substituted sulfonamides, process of preparation and medicines
申请人:Lipha Lyonnaise Industrielle Pharmaceutique
公开号:US05387709A1
公开(公告)日:1995-02-07
The present invention concerns new substituted sulfonamides, and the physiologically acceptable salts possibly in the form of complexes, esters and amides thereof, represented by the formula: ##STR1##
Nickel-Catalyzed Favorskii-Type Rearrangement of Cyclobutanone Oxime Esters to Cyclopropanecarbonitriles
作者:Ping Fang、Tian-Sheng Mei、Bin Shuai
DOI:10.1055/s-0039-1690872
日期:2021.10
A nickel-catalyzed base-promoted rearrangement of cyclobutanone oxime esters to cyclopropanecarbonitriles was developed. The ring opening of cyclobutanone oxime esters occurs at the sterically less hindered side. A base-promoted nickelacyclobutane intermediate, formed in situ, is assumed to be involved in the formation of the product.
Nitrile Alkylations through Sulfinyl-Metal Exchange
作者:Dinesh Nath、Fraser F. Fleming
DOI:10.1002/anie.201105630
日期:2011.12.2
Triple alkylation: Phenylsulfinyl‐ and phenylthioacetonitrile can function as trianion equivalents of acetonitrile by sequential alkylation and sulfinyl–metal exchange (see scheme; mCPBA=meta‐chloroperoxybenzoic acid). The metalated nitriles alkylate a range of electrophiles to obtain nitriles with quaternary centers. The sulfinyl–metal exchange proceeds under very mild conditions and has a high functional‐group
organolithiums, Grignardreagents, or zincates to sulfinylnitriles triggers a facile sulfinyl–metal exchange to afford N‐ or C‐metalated nitriles. Sulfinyl–magnesium exchange–alkylations efficiently install quaternary and tertiary centers, even in the case of tertiary sulfinylnitriles that contain a highly acidic methine proton. α‐Sulfinylalkenenitriles afford moderately nucleophilic magnesiated nitriles, and
Substituted pyridine and pyridazine compounds and methods of use
申请人:Amgen Inc.
公开号:US06174901B1
公开(公告)日:2001-01-16
Selected novel substituted pyridine and pyridazine compounds are effective for prophylaxis and treatment of diseases, such as TNF-&agr;, IL-1&bgr;, IL-6 and/or IL-8 mediated diseases, and other maladies, such as cancer, pain and diabetes. The invention encompasses novel compounds, analogs, prodrugs and pharmaceutically acceptable salts thereof, pharmaceutical compositions and methods for prophylaxis and treatment of diseases and other maladies or conditions involving inflammation, cancer, pain, diabetes and the like. The subject invention also relates to processes for making such compounds as well as to intermediates useful in such processes.