Rhone-poulenc Industries

Rhone-poulenc S.a.

Francois Debarre

Daniel Farge

Claude James

Claude Jeanmart

Jean-Louis Fabre

Pierre Edouard Simon

Thiazolo[3,2-a]pyrimidine derivative of the formula: ##STR1## wherein R represents phenyl, alkyl of 1 through 4 carbon atoms, alkyl of 1 through 4 carbon atoms substituted by 1 through 3 halogen atom, alkenyl of 2 through 4 carbon atoms, or cycloalkyl of 3 through 6 carbon atoms and R.sub.1 represents hydrogen, or R and R.sub.1 each represent phenyl or unsubstituted alkyl of 1 through 4 carbon atoms, or R and R.sub.1 together represent an alkylene radical of 4 or 5 carbon atoms, and R.sub.2 and R.sub.3 each represent hydrogen or unsubstituted alkyl of 1 through 4 carbon atoms, or R and R.sub.1 each represent hydrogen, and one of R.sub.2 and R.sub.3 represents hydrogen and the other represents unsubstituted alkyl of 1 through 4 carbon atoms, or R.sub.2 and R.sub.3 both represent unsubstituted alkyl of 1 through 4 carbon atoms, are new compounds possessing pharmacological properties. They are especially useful in the treatment of rheumatic disease or allergic states, or as analgesics. Processes for the preparation of the compounds are described.

2,3,6,7-Tetrahydrothiazolo[3,2-a]pyrimidine derivatives having

Imidazo[2,1-b]thiazoles carrying in the 2-position a phenyl radical unsubstituted or substituted by one or two atoms or radicals selected from halogen atoms and alkyl, alkoxy, alkylthio, dialkylamino, dialkylsulphamoyl, nitro, cyano and trifluoromethyl radicals or carrying in the 2-position a 2-, 3- or 4-pyridyl radical unsubstituted or substituted by an alkyl or alkoxy radical, are new compounds possessing pharmacological properties and useful, in particular, as anti-depressants and psycho-energisers.

Imidazo[2,1-b]thiazole derivatives

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Antony, France

Francois Debarre