Naphthalene compounds, a process for their preparation and pharmaceutical compositions containing them

摘要

Naphthalenic derivatives (I) and their enantiomers, diastereoisomer or additive salts of acid or base, are new. Naphthalenic derivatives of formula (I) and their enantiomers, diastereoisomer or additive salts of acid or base, are new. R 1R 4or NHR 4; R 41-6C (halo)alkyl, 1-6C alkenyl, polyhalo(1-6C)alkyl, 3-8C cycloalkyl, 3-8C cycloalkyl(1-6C)alkyl, aryl, aryl(1-6C)alkyl, heteroaryl or heteroaryl(1-6C)alkyl; R 21-6C alkyl substituted 1-6C alkoxy, OH, OSO 2CH 3, N 3, NRR1a, NHCOR1b or NHSO 2R1b; either R, R1a : H or 1-6C alkyl, 3-8C cycloalkyl, aryl or aryl(1-6C)alkyl; or NRR1a : 5-6 membered ring having another heteroatom e.g. N, O or S; R1b : R; and R 3H, halo, 1-6C alkyl or 1-6C alkenyl. Provided that: when R 1is methyl and R 2is hydroxymethyl, then R 3is not hydrogen; the aryl is phenyl, naphthyl or biphenyl; and the heteroaryl is mono or bicyclic heteroaryl with 1-3 heteroatoms e.g. oxygen, sulfur and nitrogen. An independent claim is included for the preparation of (I). [Image] ACTIVITY : Hypnotic; Tranquilizer; Antidepressant; Cardiovascular-Gen; Gastrointestinal-Gen; Muscular-Gen; CNS-Gen; Neuroleptic; Anorectic; Anticonvulsant; Antidiabetic; Antiparkinsonian; Nootropic; Dermatological; Antimigraine; Neuroprotective; Cytostatic; Cerebroprotective; Endocrine-Gen.; Contraceptive. MECHANISM OF ACTION : Melatoninergic receptor agonist. The melatoninergic receptor inhibiting activity of N-[3-methoxy-2-(7-methoxy-1-naphtyl)propyl]acetamide was tested. The result showed that the compound had an inhibition constant (Ki) value of 4.9 mu M.