Patents Assigned to Zamon Group S.p.A.
  • Process for the recycle of a waste product of diltiazem synthesis
    Patent number: 6114523
    Abstract: A process which allows the re-use of compounds of formula ##STR1## in diltiazem synthesis through a process of conversion to a mixture of enantiomers III-(2R,3R) and III-(2S,3S) is described.
    Type: Grant
    Filed: October 21, 1998
    Date of Patent: September 5, 2000
    Assignee: Zamon Group S.p.A.
    Inventors: Pietro Allegrini, Gaetano Marchioro, Giuseppe Barreca, Marco Villa, Laura Russo