Patents by Inventor Christopher Thomas Evans

Christopher Thomas Evans 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).

  • Cyclopentenes
    Patent number: 5714351
    Abstract: The individual enantiomers of the compounds (Ia), (Ib), (IIa) or (IIb), optionally substituted by non-interfering substituent(s). The novel enantiomers can be obtained by biotransformation. The (Ia) or (IIa) compounds can be used for the synthesis of chiral carbocyclic nucleosides.
    Type: Grant
    Filed: February 13, 1995
    Date of Patent: February 3, 1998
    Assignee: Chiroscience Limited
    Inventors: Christopher Thomas Evans, Stanley Michael Roberts, Karoline Shoberu, Rosemary Mackeith
  • Preparation of biologically active compounds from substantially pure enantiomers of 2-azabicyclo?2.2.1!hept-5-en-one
    Patent number: 5688933
    Abstract: Lactams of 1-amino-3-carboxylic acid cyclic compounds are provided in enantiomeric form, together with an enantiomer of the corresponding ring-opened amino-acid or ester, by reaction of the racemic lactam with a novel lactamase. The products are useful in the synthesis of chiral carbocyclic nucleotides. The enantiomer is preferably 2-azabicyclo?2.2.1!hept-5-en-3-one.
    Type: Grant
    Filed: June 5, 1995
    Date of Patent: November 18, 1997
    Assignee: Chiroscience, Ltd.
    Inventors: Christopher Thomas Evans, Stanley Micahel Roberts
  • Chiral compounds and their resolution synthesis using enantioselective esterases
    Patent number: 5661014
    Abstract: Enantiomeric glutarimides such as aminoglutethimide and rogletimide are prepared by cyclisation of a corresponding ester-nitrile which is a good substrate for biotransformation with an enantiospecific esterase.
    Type: Grant
    Filed: May 30, 1995
    Date of Patent: August 26, 1997
    Assignee: Chiroscience Limited
    Inventors: Christopher Thomas Evans, Raymond McCague, Stephen John Clifford Taylor