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.
AGER, IAN R.;BARNES, ALAN C.;DANSWAN, GEOFFREY W.;HAIRSINE, PETER W.;KAY,+, J. MED. CHEM., 31,(1988) N 6, 1098-1115
作者:AGER, IAN R.、BARNES, ALAN C.、DANSWAN, GEOFFREY W.、HAIRSINE, PETER W.、KAY,+
DOI:——
日期:——
US4279912A
申请人:——
公开号:US4279912A
公开(公告)日:1981-07-21
Novel imidazoquinolines
申请人:Roussel Uclaf
公开号:US04279912A1
公开(公告)日:1981-07-21
Novel imidazoquinolines of the formula ##STR1## wherein X and Y are individually selected from the group consisting of hydrogen, halogen and alkoxy of 1 to 5 carbon atoms, Z is selected from the group consisting of hydrogen, alkyl of 1 to 5 carbon atoms optionally substituted with at least two hydroxyls or protected hydroxyls and ##STR2## n is an integer from 1 to 6 and R.sub.1 and R.sub.2 are individually alkyl of 1 to 5 carbon atoms and taken together with the nitrogen to which they are attached form a saturated heterocyclic ring containing 4 to 6 carbon atoms and optionally interrupted by another heteroatom which further heteroatom is optionally substituted with alkyl of 1 to 5 carbon atoms and non-toxic, pharmaceutically acceptable salts thereof having antiallergic and bronchodilatory activity and their preparations.