Patent number: 3987047
Abstract: Compounds of the formula ##SPC1##Wherein ##EQU1## where R.sub.1 is hydrogen, straight or branched aliphatic acyl of 1 to 12 carbon atoms, methoxy-substituted straight or branched aliphatic acyl of 1 to 12 carbon atoms, benzoyl, halo-benzoyl, carbalkoxy of 2 to 7 carbon atoms, carbcycloalkoxy of 4 to 7 carbon atoms, benzyl, methylbenzyl, phenylsulfonyl, halo-phenylsulfonyl, tolylsulfonyl, alkenyl of 2 to 6 carbon atoms, phenyl, trifluoroacetyl, amidino, amido, thioamido, phenoxycarbonyl, benzyloxycarbonyl, methylsulfonyl or--B -- XwhereB is straight or branched alkylene of 1 to 6 carbon atoms, andX is hydrogen, hydroxyl, methoxy, carboxyl, cyano, dimethylaminocarbonyl, morpholino-carbonyl or carbalkoxy of 2 to 6 carbon atoms,R.sub.2 is hydrogen, hydroxyl, alkyl of 1 to 3 carbon atoms, alkoxy of 1 to 3 carbon atoms, alkanoyloxy of 1 to 3 carbon atoms, alkoxycarbonyloxy of 2 to 4 carbon atoms, amino, dimethylamino, morpholino or halogen,R.sub.
Type:
Grant
Filed:
November 5, 1974
Date of Patent:
October 19, 1976
Assignee:
Boehringer Ingelheim GmbH
Inventors:
Gerhart Griss, Rudolf Hurnaus, Wolfgang Grell, Robert Sauter, Richard Reichl