New naphthalene derivatives, processes for teir preapration and the pharmaceutical compositions which contain them

摘要

Naphthalene derivatives of formula (I), their optical isomers and mixtures, and their acid addition salts, are new. X = O or S; R = H, OH, (substd.) alkyl, (substd.) alkoxy; R1 = H or alkyl; R2 = H, (substd.) alkyl, (substd.) alkenyl, (substd.) cycloalkyl, or (substd.) cycloalkyl alkyl or -NHR4; R3 = OH, 2-6C (substd.) alkyl, (substd.) cycloalkyl alkyl, (substd.) alkenyl or alkynyl, R5-alkyl, or -OCO-R6; R4 = (substd.) alkyl, cycloalkyl or cycloalkyl alkyl; R5 = (substd.) pyridyl, phenyl, naphthyl, thienyl, furyl, pyrimidyl, indolyl, benzofuryl, benzothienyl, isoquinolyl, or quinolyl; -CO-R6 = (1-5C) alkyl, cycloalkyl, cycloalkyl (1-5C) alkyl, R5, and R5 - (1-5C) alkyl. Unless indicated otherwise, alkyl, alkenyl, alkynyl and alkoxy groups have up to 6C, cycloalkyl has 3-8C, optional substituents on alkyl, cycloalkyl and alkoxy groups may be one or more halogens, alkyl or alkoxy groups, and optional substituents on R5 may be one or more alkyl, alkoxy, halogen, OH or CF3 groups on the aromatic ring(s).