[EN] CHROMENE DERIVATIVES AS ANTI-INFLAMMATORY AGENTS<br/>[FR] DERIVES DE CHROMENE A TITRE D'AGENTS ANTI-INFLAMMATOIRES
申请人:PHARMACIA CORP
公开号:WO2004087687A1
公开(公告)日:2004-10-14
The subject invention concerns methods and compounds that have utility in the treatment of a condition associated with cyclooxygenase-2 mediated disorders. Compounds of particular interest are benzopyrans and their analogs defined by formula (I). Wherein Z, X, R1, R2, R3, and R4 are as described in the specification.
Deoxygenative α-alkylation and α-arylation of 1,2-dicarbonyls
作者:Shengfei Jin、Hang T. Dang、Graham C. Haug、Viet D. Nguyen、Hadi D. Arman、Oleg V. Larionov
DOI:10.1039/d0sc03118f
日期:——
challenging but synthetically indispensable approach to α-branched carbonyl motifs that are widely represented among drugs, natural products, and synthetic intermediates. Here, we describe a simple approach to generation of boron enolates in the absence of strong bases that allows for introduction of both α-alkyl and α-aryl groups in a reaction of readily accessible 1,2-dicarbonyls and organoboranes. Obviation
[EN] NOVEL PROCESS FOR THE PREPARATION OF CILASTATIN SODIUM SALT<br/>[FR] NOUVEAU PROCEDE DE PREPARATION D'UN SEL DE SODIUM DE CILASTATINE
申请人:DONG KOOK PHARM CO LTD
公开号:WO2006022511A1
公开(公告)日:2006-03-02
The present invention relates to a novel process for preparing cilastatin sodium salt used asa dehydropeptidase 1 inhibitor. The novel method of the present invention could prevent the formation of (E)-isomer from the preparation of intermediate for preparing cilastatin sodium, i.e., (Z)-7-chloro-2-((S)-2,2-dimethylcyclopropanecarboxarnido)-2-heptenoic acid metal salt and isolate the intermediate in situ providing simpler process with high yield and purity. Furthermore, it can provide with highly pure cilastatin sodium salt by isolating novel cilastatin amine salt and using by sodium hydroxide and cationic exchange resin. Accordingly, the method can be very useful in preparing cilastatin sodium salt with high yield and high purity.