| abstract |
PCT No. PCT/DE90/00282 Sec. 371 Date Dec. 21, 1990 Sec. 102(e) Date Dec. 21, 1990 PCT Filed Apr. 6, 1990 PCT Pub. No. WO90/12796 PCT Pub. Date Nov. 1, 1990.Compounds of formula I <IMAGE> I in which R2 means optionally substituted C1-7 alkyl, C2-7 alkenyl, CH2-O-C1-4 alkyl or CH2-S-C1-4 alkyl R6 means C2-6 alkyl, C3-6 alkenyl or C3-5-cycloalkyl-C1-2 alkyl and R8 means CH2-X, <IMAGE> in which X stands for CN, OCH3, SCH3 or CONH2 and R1 stands for hydrogen, halogen, methyl or methoxy, and R3 and R4 each mean C1-4 alkyl or (CH2)n-N(CH3)2, in which n=1-4, and their acid addition salts, the process for their production, their use as pharmaceutical agents as well as intermediate compounds are described. |