Compounds of formula (I): ##STR1## as single stereoisomers or mixtures thereof and their pharmaceutically acceptable salts inhibit matrix metalloproteases, such as interstitial collagenases, and are useful in the treatment of mammals having disease states alleviated by the inhibition of such matrix metalloproteases, for example arthritic diseases or bone resorption disease, such as osteoporosis.
[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.
METHOD FOR PRODUCING OPTICALLY ACTIVE 2-HYDROXY ESTER AND NOVEL INTERMEDIATE COMPOUND
申请人:Shiina Isamu
公开号:US20110319650A1
公开(公告)日:2011-12-29
Disclosed is a method for producing an optically active 2-hydroxy ester, comprising selectively esterifying one enantiomer of a racemic 2-hydroxy ester in a solvent containing a catalyst such as tetramisole or benzotetramisole, and a carboxylic acid anhydride, or a carboxylic acid anhydride and a carboxylic acid. In particular, in the case where the solvent contains a carboxylic acid anhydride, but does not contain a carboxylic acid, as the carboxylic acid anhydride, a carboxylic acid anhydride containing a tertiary or quaternary carbon atom in the a-position is used. On the other hand, in the case where the solvent contains a carboxylic acid anhydride and a carboxylic acid, as the carboxylic acid, a carboxylic acid containing a tertiary or quaternary carbon atom in the a-position is used.
Kinetic Resolution of the Racemic 2-Hydroxyalkanoates Using the Enantioselective Mixed-Anhydride Method with Pivalic Anhydride and a Chiral Acyl-Transfer Catalyst
A variety of opticallyactive 2‐hydroxyalkanoates and the corresponding 2‐acyloxyalkanoates are produced by the kinetic resolution of racemic 2‐hydroxyalkanoates by using achiral 2,2‐diarylacetic acid with hindered carboxylicanhydrides as the coupling reagents. The combined use of diphenylacetic acid, pivalic anhydride, and (+)‐(R)‐benzotetramisole ((R)‐BTM) effectively produces (S)‐2‐hydroxyalkanoates
An effective <i>cis</i>-β-octahedral Mn(<scp>iii</scp>) SALPN catalyst for the Mukaiyama–Isayama hydration of α,β-unsaturated esters
作者:Paul S. Donnelly、Andrea J. North、Natalia Caren Radjah、Michael Ricca、Angus Robertson、Jonathan M. White、Mark A. Rizzacasa
DOI:10.1039/c9cc03921j
日期:——
cis-β-MnIIISALPN catalysts were synthesised and tested in the Mukaiyama–Isayama hydration of α,β-unsaturated esters. The MnIIIEtOSALPN(acac) complex 7 is the most active and catalyses hydration with little or no detectable undesired alkene reduction. This catalyst is superior for alkenehydration compared to the originally reported Mn(dpm)3 catalyst.
两个顺式-β-Mn系III SALPN催化剂合成和在向山测试- α,β -不饱和酯的谏山水合。Mn III EtOSALPN(acac)络合物7是最活跃的催化剂,可催化水合作用,很少或没有可检测到的不希望的烯烃还原。与最初报道的Mn(dpm)3催化剂相比,该催化剂在烯烃水合方面表现优异。