Patents Examined by Ceia Chang
  • Spirocyclic antipsychotic agents
    Patent number: 5324733
    Abstract: A class of spirocyclic piperidine derivatives are selective ligands at sigma recognition sites and are therefore useful in the treatment and/or prevention of psychiatric disorders. The claimed compounds are of the formula ##STR1## wherein, A and B are hydrogen, Q is a bond, R.sup.11, R.sup.12, and R.sup.13 are as defined in the specification.
    Type: Grant
    Filed: April 22, 1993
    Date of Patent: June 28, 1994
    Assignee: Merck Sharpe & Dohme Ltd.
    Inventors: David C. Billington, Mark S. Chambers