Patents Assigned to Sir International SA
  • Calcium antagonistic dihydropyridine derivative
    Patent number: 4826856
    Abstract: The compound I ##STR1## prepared by reacting m-nitrobenzaldehyde, ethyl .beta.-aminocrotonate and 2-piperidinoethanol acetoacetate, is endowed with valuable pharmacological properties namely calcium antagonistic activity in vitro and in vivo.
    Type: Grant
    Filed: February 18, 1988
    Date of Patent: May 2, 1989
    Assignees: Yason s.r.l., Sir International SA, Henning Berlin GmbH
    Inventors: Giuseppe Quadro, Jean Cahn