The present invention relates to novel cysteinyl leukotriene (specifically LTD4) antagonists, mainly to quinolin, quinoxaline or benz[c]thiazole derivatives represented by the general formula (I), or the pharmaceutically acceptable salt thereof, process of preparation thereof, and to the use of the compounds in the preparation of pharmaceutical compositions for the therapeutic treatment of disorders related to cysteinyl leukotriene, in mammals, more specially in humans.
Alkylation of 2-Butyl-4,4-dimethyl-4H-benzo[d][1,3]oxathiine-1,1-dioxide, a New Class of Acyl Anion Equivalents as an Alternative to Dithianes
作者:Robert K. Boeckman、Susan M. Hanson、Jeremy A. Cody
DOI:10.3987/com-06-s(w)56
日期:——
,3]oxathiine-1,1-dioxide has been found to react with several electrophiles, such as various halides and aldehydes, upon regioselective deprotonation. This method utilizes the sulfone group to form new carbon-carbon bonds while serving as a masked carbonyl. Subsequent hydrolysis of the sulfone provides a facile approach toward many useful synthetic intermediates. This methodology could provide a useful
Directed ortho-lithiation of lithium thiophenolate. New methodology for the preparation of ortho-substituted thiophenols and related compounds
作者:Garret D. Figuly、Cynthia K. Loop、J. C. Martin
DOI:10.1021/ja00184a038
日期:1989.1
quantitative conversion to lithium 2-lithiobenzenethiolate (1). Reactions of this dilithio derivative with a variety of electrophiles (DzO, carbon dioxide, acetone, diphenyl disulfide, methyl iodide, and thioxanthone) are described. The adduct to thioxanthone is ring-closed to form a triarylmethyl cation (9), and its related carbinol (8), with two o,o'-sulfide bridges.
Brønsted acid-catalyzed chemodivergent reactions of ortho-mercaptobenzyl alcohols with 3-alkyl-2-vinylindoles and styrenes: [5+2] cyclization versus hydroxysulfenylation
作者:Jia-Jia Zhao、Man Tang、Hong-Hao Zhang、Meng-Meng Xu、Feng Shi
DOI:10.1039/c6cc00920d
日期:——
Chemodivergent [5+2] cyclization and hydroxysulfenylation reactions of ortho-mercaptobenzyl alcohols with 3-alkyl-2-vinylindoles and styrenes have been established in the presence of Bronsted acid, which provide efficient methods for constructing benzoxathiepine scaffold...
HEXACYCLIC HETEROAROMATIC COMPOUNDS FOR ELECTRONIC DEVICES
申请人:Merck Patent GmbH
公开号:US20200165252A1
公开(公告)日:2020-05-28
The invention relates to heteroaromatic compounds, particularly for use in electronic devices. The invention further relates to a method for producing the compounds according to the invention and to electronic devices containing same.