4-hydroxyphenylthio derivatives, their preparation and their use for the
申请人:Elf Sanofi
公开号:US05401855A1
公开(公告)日:1995-03-28
The subject of the invention is 4-hydroxyphenylthio derivatives of general formula: ##STR1## in which: R.sub.1 and R.sub.2, which are identical or different, each represent hydrogen, a methyl or ethyl radical or a halogen atom, R represents a (C.sub.1 -C.sub.6) alkyl, (C.sub.3 -C.sub.6) cycloalkyl or phenyl radical, R.sub.3 represents hydrogen or a halogen atom, X represents --O--, --S-- or --NR.sub.4 -- in which R.sub.4 represents hydrogen or a (C.sub.1 -C.sub.4) alkyl group, useful as synthetic intermediates, especially for the preparation of aminoalkoxyphenylsulphonyl derivatives which are pharmaceutically active compounds.