Antiviral pharmaceutical composition for treating lymphocytes
申请人:Godecke Aktiengesellschaft
公开号:US05321024A1
公开(公告)日:1994-06-14
The present invention provides a pharmaceutical composition containing 3,4-dihydro-1-phenyl-1-thio -1,2,4-benzothiadiazine 1-oxide useful for protecting lymphocytes.
Kinetic Resolution of Sulfoximines via Asymmetric Organocatalyzed Formation of Benzothiadiazine-1-oxides
作者:Mengyao Tang、Mengyao Yuan、Shibin Hong、Qianwen Jiang、Huanchao Gu、Xiaoyu Yang
DOI:10.1021/acs.orglett.4c00266
日期:2024.3.8
A catalytic kineticresolution of sulfoximines has been developed through chiral phosphoric acid-catalyzed intramolecular dehydrative cyclizations. A variety of racemic sulfoximines bearing an ortho-amidophenyl moiety underwent asymmetric dehydrative cyclizations using this method, yielding both the recovered sulfoximines and benzothiadiazine-1-oxide products with good to high enantioselectivities
available chiral sulfinamides into pharmaceutically useful chiral sulfoximines viadirect SIV-functionalization is synthetically attractive but challenging due to the competitive reaction of N-functionalization. Herein, we disclose a novel strain-release strategy to access stereospecific and chemoselective SIV-arylation and alkenylation of sulfinamides using arynes and strained cyclic alkynes. This method tolerates
通过直接S IV官能化将市售手性亚磺酰胺转化为药用手性亚磺酰亚胺在合成上具有吸引力,但由于N官能化的竞争反应而具有挑战性。在此,我们公开了一种新的应变释放策略,以使用芳炔和应变环炔实现亚磺酰胺的立体特异性和化学选择性S IV -芳基化和烯基化。该方法可耐受氮中心 (N–R) 上官能团前所未有的化学多样性。通过密度泛函理论计算阐明了高 S IV选择性的起源,表明芳炔底物的逐步机制和环状炔烃的协调机制。
Synthesis and oral antiallergic activity of carboxylic acids derived from imidazo[2,1-c][1,4]benzoxazines, imidazo[1,2-a]quinolines, imidazo[1,2-a]quinoxalines, imidazo[1,2-a]quinoxalinones, pyrrolo[1,2-a]quinoxalinones, pyrrolo[2,3-a]quinoxalinones, and imidazo[2,1-b]benzothiazoles
作者:Ian R. Ager、Alan C. Barnes、Geoffrey W. Danswan、Peter W. Hairsine、David P. Kay、Peter D. Kennewell、Saroop S. Matharu、Peter Miller、Peter Robson
DOI:10.1021/jm00401a009
日期:1988.6
4H-Imidazo[2,1-c][1,4]benzoxazine-2-carboxylic acid (3) was found to possess potent activity in the IgE-induced rat passive cutaneous anaphylaxis model which may be predictive of clinical antiallergic activity. Compared to disodium cromoglycate (DSCG, 1), 3 was less active following iv administration but unlike DSCG showed very significant oral activity. To explore the structural requirements for this activity, a range of tricyclic compounds was prepared and their activities were measured. Individual 2-carboxylic acids derived from imidazo[1,2-a]quinolines, imidazo[1,2-a]quinoxalines, imidazo[1,2-a]quinoxalinones, pyrrolo[1,2-a]quinoxalinones, pyrrolo[2,3-a]quinoxalinones, and imidazo[2,1-b]benzothiazoles showed iv activities up to 10(3) times as potent as DSCG and many of them showed significant oral activity. From these, imidazo[1,2-a]quinoxaline-2-carboxylic acid 114 has been chosen for further development.