Compounds of formula (I), wherein A represents N or CH; R.sup.1 and R.sup.2 independently represent C.sup.1-4 alkyl, halo or CF.sub.3 ; R.sup.3 represents C.sub.1-4 alkyl (optionally substituted), C.sub.3-7 cycloalkyl, CF.sub.3 or aryl; R.sup.4 represents H, C.sub.3-7 cycloalkyl or C.sub.1-6 alkyl (optionally substituted); and their pharmaceutically acceptable derivatives; are useful in the treatment of, inter alia, neurodogenerative disorders. ##STR1##
Thioalkylthio cephalosporin derivatives and intermediates
申请人:SHIONOGI SEIYAKU KABUSHIKI KAISHA
trading under the name of
SHIONOGI & CO. LTD.
公开号:EP0594263A1
公开(公告)日:1994-04-27
Novel compounds of the formula I:
QSR²SR¹Het
wherein Q is C₁-C₁₂ acyl or halogen; R¹ is a single bond or C₁-C₄ alkylene; and R² is a straight or branched C₁-C₄ alkylene; Het is 1,2,3-triazol-4-yl, or a derivative which is optionally protected at a nitrogen atom.
The novel compounds are useful as intermediates for the production of thioalkylthio cephalosporin antibiotic compounds.