Patents Assigned to The John C. Sheehan Institute for Research, Inc.
  • Process for the preparation of (-)-6a,10a-trans-6a,7,8,10a-tetrahydrodibenzo[b,d]-pyrans
    Patent number: 4025516
    Abstract: (-)-6A,10A-TRANS -1-Hydroxy-3-n-pentyl-6,6,9-trimethyl-6a,7,8,10a-tetrahydrodibenzo[b,d]pyr an and related pyrans are prepared by a one-step process from (+)-p-mentha-2,8-dien-1-ol and substituted resorcinols. The pyrans produced by the process of this invention have useful pharmacological properties.
    Type: Grant
    Filed: November 28, 1975
    Date of Patent: May 24, 1977
    Assignee: The John C. Sheehan Institute for Research, Inc.
    Inventors: Raj Kumar Razdan, Haldean Cloyce Dalzell