Nickel-Catalyzed Cross-Coupling of Aryl Redoxactive Esters with Aryl Zinc Reagents
作者:Bo-Hao Shih、R. Sidick Basha、Chin Fa Lee
DOI:10.1021/acscatal.9b02913
日期:2019.10.4
reaction conducted using a redox active ester with aryl zinc reagent was developed. This method demonstrates a new disconnection approach for formation of arylaryl esters. In the one-pot sequential process, the readily available aryl carboxylic acids can be converted into functionalized arylaryl esters and heteroaryl esters. This protocol is amenable to the gram-scale synthesis. The present method
The present invention provides compounds of the formula Ar1-Q-Ar2-Y-R-Z and pharmaceutically acceptable salts thereof wherein Ar1 and Ar2 are optionally substituted aryl moieties, Z is an optionally substituted nitrogen-containing moiety which may be an acyclic, cyclic or bicyclic amine or an optionally substituted monocyclic or bicyclic nitrogen-containing heteroaromatic moiety; Q is a linking group capable of linking two aryl groups; R is an alkylene moiety; Y is a linking moiety capable of linking an aryl group to an alkylene moiety and wherein Z is bonded to R through a nitrogen atom. The compounds and pharmaceutical compositions of the present invention are useful in the treatment of inflammatory diseases which are mediated by LTB4 production, such as proriasis, ulcerative colitis, IBD and asthma.
Structure−Activity Relationship Studies on 1-[2-(4-Phenylphenoxy)ethyl]pyrrolidine (SC-22716), a Potent Inhibitor of Leukotriene A<sub>4</sub> (LTA<sub>4</sub>) Hydrolase
作者:Thomas D. Penning、Nizal S. Chandrakumar、Barbara B. Chen、Helen Y. Chen、Bipin N. Desai、Stevan W. Djuric、Stephen H. Docter、Alan F. Gasiecki、Richard A. Haack、Julie M. Miyashiro、Mark A. Russell、Stella S. Yu、David G. Corley、Richard C. Durley、Brian F. Kilpatrick、Barry L. Parnas、Leslie J. Askonas、James K. Gierse、Elizabeth I. Harding、Maureen K. Highkin、James F. Kachur、Suzanne H. Kim、Gwen G. Krivi、Doreen Villani-Price、E. Yvonne Pyla、Walter G. Smith、Nayereh S. Ghoreishi-Haack
DOI:10.1021/jm990496z
日期:2000.2.1
program, SC-22716 (1, 1-[2-(4-phenylphenoxy)ethyl]pyrrolidine) was identified as a potent inhibitor of LTA(4) hydrolase. Structure-activity relationship (SAR) studies around this structural class resulted in the identification of a number of novel, potent inhibitors of LTA(4) hydrolase, several of which demonstrated good oral activity in a mouse ex vivo whole blood assay.
A facile synthesis of aryl esters is developed by coupling aryl carboxylicacids and aryl boronicacids in the presence of PhI(OAc)2 and carbonyl diimidazole. A wide range of functional groups were tolerant to the metal-free reaction condition that led to the desired products in good yields.
Solid-Phase Benzoylation of Phenols and Alcohols in Microwave Reactor: An Ecofriendly Protocol
作者:Suchandra Chakraborty、Ahana Saha、Kaushik Basu、Chandan Saha
DOI:10.1080/00397911.2015.1078899
日期:2015.10.18
Abstract An efficient solid-phase benzoylation of phenols and alcohols was developed under microwave irradiation. A stoichiometric amount of benzoyl chloride was sufficient to carry out the reaction. This benzoylation features short reaction time, good yields, and easy workup procedures. Furthermore, the scope of the reaction was extended to prepare 3,5-dinitrobenzoyl derivatives of alcohols. GRAPHICAL