4-CARBONYL SUBSTITUTED 1,1,2-TRIMETHYL-1A,4,5,5A-TETRAHYDRO-1H-4-AZA-CYCLOPROPA'A!PENTALENE DERIVATIVES AS AGONISTS FOR THE G-PROTEIN-COUPLED RECEPTOR S1P1/EDG1 AND IMMUNOSUPPRESSIVE AGENTS

摘要

The invention relates to novel pyrrole compounds of the formula (I) wherein A represents -CH2CH2-, -CH=CH-, or -NH-CH2; Ar represents phenyl; mono-, di-, or tri-substituted phenyl, wherein the substituents are independently selected from halogen, lower alkyl, lower alkoxy, hydroxy-lower alkyl, hydroxy-lower alkoxy, 1-glyceryl, 2-glyceryl, cycloalkyl, mono- or di-lower alkylamino, methylenedioxy, ethylenedioxy, trifluoromethyl and trifluoromethoxy; or unsubstituted mono- or di-substituted 2-, 3- or 4-pyridyl, wherein the substituents are independently selected from lower alkoxy and hydroxy-lower alkoxy. The present invention provides novel compounds of formulae (I), (II) and (III) that are agonists for the G protein-coupled receptor S1P1/EDG1 and have a powerful and long-lasting immunosuppressive effect which is achieved by reducing the number of cirulating and infiltrating T- and B-lymphocytes, whitout affecting their maturation, memory or expansion. The reduction of circulating T-/B-lymphocytes as a result of S1P1/EDG1 agonism, possibly in combination with the observed improvement of endothelial cell layer function associated with S1P1/EDG1 activation, makes such compounds useful to treat uncontrolled inflammatory disease and to improve vascular functionality.