SUBSTITUTED (S)-3-PHENYLPIPERIDINE DERIVATIVES, THEIR PREPARATION AND THEIR USE AS DOPAMINE AUTORECEPTOR ANTAGONISTS

摘要

A compound of Formula I or a pharmaceutically acceptable salt thereof wherein n is 1 or 2; R1 and R2 are independently H (provided only one is H at the same time), -OH, CN, CH2CN, 2- or 4-CF3, CH2CF3, CH2CHF2, CH=CF2, (CH2)2CF3, ethenyl, 2-propenyl, OSO2CH3, OSO2CF3, SSO2CF3, COR, COOR, CON(R)2, SOxCH3 (where, x is 0-2), SOxCF3, O(CH2)xCF3, SO2N(R)2, CH=NOR, COCOOR, COCOON(R)2, C1-8 alkyls, C3-8 cycloalkyls, CH2OR, CH2(R)2, NRSO2CF3, NO2, halogen, a phenyl at positions 2, 3 or 4, thienyl, furyl, pyrrole, oxazole, thiazole, N-pyrroline, triazole, tetrazole or pyridine; R3 is hydrogen, CF3, CH2CF3, C1-C8 alkyl, C3-C8 cycloalkyl, C4-C9 cycloalkyl-methyl, C 2-C8 alkenyl, C2-C8 alkynyl, 3,3,3-trifluoropropyl, 4,4,4-trifluorobutyl, -(CH2)m-R5 (where m is 1-8), CH2SCH3 or a C4-C8 alkylene bonded to said nitrogen and one of its adjacent carbon atoms inclusive whereby a heterocyclic structure is formed; R4 and R are independently selected from hydrogen, CF3, CH2CF3, C1-C8 alkyl, C3-C8 cycloalkyl, C4-C9 cycloalkyl-methyl, C2-C8 alkenyl, C2-C8 alkynyl, 3,3,3-trifluoropropyl, 4,4,4-trifluorobutyl, -(CH2)m-R5 where m is 1-8; R5 is phenyl, phenyl (substituted with a CN, CF3, CH2CF3, C1-C8 alkyl, C3-C8 cycloalkyl, C4-C9 cycloalkyl-methyl, C2-C8 alkenyl, C2-C8 alkynyl), 2-thiophenyl, 3-thiophenyl, -NR6CONR6R7, or -CONR6R7; R6 and R7 are independently hydrogen, C1-C8 alkyl, C3-C8 cycloalkyl, C4-C9 cycloalkylmethyl, C2-C8 alkenyl or C2-C8 alkynyl; and with the proviso that when R1 is CN, R2 and R4 are H, R3 is n-Pr and n is 1, then such compound is a pure enantiomer, and when R1 or R2 is OH, halogen, CONH2 or alkyl, then R4 is not hydrogen. The Formula I compounds possess selective pharmacological properties and are useful in treating central nervous system disorders related to dopamine receptor activity including depression symptoms, geriatric disorders in the improvement of mental and motor functions, schizophrenia, narcolepsy, MBD, obesitas, and disturbances of sexual functions and impotence.