Perhydroisoindole derivatives and their preparation.

摘要

New perhydroisoindole derivatives of general formula (I) in which the radicals R1 are identical and represent hydrogen atoms or together form a bond, the symbols R2 are identical and represent phenyl radicals optionally substituted by a halogen atom or by a methyl radical in the 2 or 3 position, the symbol R3 represents a halogen atom or a hydroxyl radical and the symbol R4 represents a hydrogen atom or simultaneously with R3 represents a halogen atom, in their isomeric forms or their mixtures, and optionally their salts, and their preparation. The new derivatives according to the invention are intermediates for the preparation of antagonists of substance P. <IMAGE>