Patents by Inventor Derek Raymond Boyd

Derek Raymond Boyd has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Process for the resolution of cis 1,2-indane diols using Pseudomonas putida
    Patent number: 6165777
    Abstract: A process for resolution of a mixture of dihydroxydihydroindene enantiomers comprising treating the mixture of enantiomers with a Pseudomonas putida species microorganism.Resolved dihydroxydihydroindenes are valuable intermediates for the synthesis of biologically active compounds such as pharmaceuticals and agrochemicals.
    Type: Grant
    Filed: June 9, 1998
    Date of Patent: December 26, 2000
    Assignee: Zeneca Limited
    Inventors: Christopher Curtis Royston Allen, Derek Raymond Boyd, Howard Dalton
  • Preparation of hydroxy compounds by bioconversion with dioxygenase
    Patent number: 6087137
    Abstract: A process for preparing a compound of Formula (3) in which R.sup.2 is --H; ##STR1## which comprises the steps: i) conversion of a compound of Formula (1) into a compound of Formula (2) using a dioxygenase enzyme; ##STR2## ii) conversion of the compound of Formula (2) into a compound of Formula (3) wherein is --COR; andiii) conversion of the compound of Formula (3) in which R.sup.2 is --COR into a compound of Formula (3) in which R.sup.2 is --H;wherein R.sup.2, a, b, c, d, Z, m and X are as defined in claim 1.Also claimed are individual steps of the process and new compounds of Formula (2).
    Type: Grant
    Filed: November 21, 1997
    Date of Patent: July 11, 2000
    Assignee: Zeneca Limited
    Inventors: Andrew John Blacker, Derek Raymond Boyd, Howard Dalton, Nigel Bowers
  • Production of optically active 1,2-dihydroxyindance derivatives by asymetric assimilation
    Patent number: 5811294
    Abstract: A process for resolution of a mixture of cis-dihydroxydihydroindene enantiomers comprising treating the mixture of enantiomers with a Pseudomonas putida species microorganism.Resolved dihydroxydihydroindenes are valuable intermediates for the synthesis of biologically active compounds such as pharmaceuticals and agrochemicals.
    Type: Grant
    Filed: April 4, 1997
    Date of Patent: September 22, 1998
    Assignee: Zeneca Limited
    Inventors: Christopher Curtis Royston Allen, Derek Raymond Boyd, Howard Dalton