FIELD: chemistry.
SUBSTANCE: present invention refers to compounds of general formula (I) in the state of base salt or acid-addition salt, to method of their preparation and to the pharmaceutical composition thereof In the said formula R1 is (C1-C6)alkyl; (C3-C7)cycloalkyl unsubstituted or substituted once or more than once; (C3-C7)cycloalkylmethyl unsubstituted or substituted once or more than once; phenyl unsubstituted or substituted ; benzyl unsubstituted or substituted once or twice ; thienyl unsubstituted or substituted ; R2 is atom hydrogen or (C1-C3)alkyl; R3 is (C1-C5)alkyl; R4, R5, R6, R7, each R8 and R9 independently represents the atom of hydrogen, atom of halogen, (C1-C7)alkyl, (C1-C5)alkoxy or trifluoromethyl radical; n is 0, 1 or 2; Alk is (C1-C4)alkyl.
EFFECT: new compounds possess useful biological activity.
5 cl, 5 tbl, 4 ex
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Authors
Dates
2009-09-10—Published
2005-01-07—Filed