Patents Assigned to Lief Lundblad
  • Patent number: 4916124
    Abstract: Novel indoloquinoxalines having substituents in 6-position containing cyclic groups, of the general formula I ##STR1## wherein R.sub.1 represents hydrogen or one or several preferably 1 to 4, similar or different substituents in the positions 1-4 and/or 7-10, selected from halogen, lower alkyl-/alkoxy group having not more than 4 carbon atoms, trifluoromethyl group, trichloromethyl group;X is a group ##STR2## wherein Y is CH.sub.2, NH, O or S and a is 2, 3 or 4 and wherein also the bond --C.dbd.N-- can be saturated; Z is alkyl having 1-6 carbon atoms, Cl, Br or CF.sub.3 andR.sub.3 represents hydrogen, lower alkyl-/cycloalkyl group having not more than 4 carbon atoms,and the physiologically acceptable addition products of the compounds with acids and halogen adducts are described. Also methods for preparing said compounds by reaction of a compound of the formula II ##STR3## with a reactive compound containing the residue --CHR.sub.
    Type: Grant
    Filed: November 18, 1987
    Date of Patent: April 10, 1990
    Assignee: Lief Lundblad
    Inventors: Jan O. E. Bergman, Stig G. Akerfeldt