Patents by Inventor John David Pittam

John David Pittam 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).

  • Enzymatic process for stereoselective preparation of a tertiary acid
    Patent number: 6261830
    Abstract: An enzymatic process for preparing amides of Formula I wherein X, E and * have the meanings defined in the specification. Chiral intermediates useful for preparing compound of Formula I and enzymatic processes for preparing such chiral intermediates are also described.
    Type: Grant
    Filed: May 31, 2000
    Date of Patent: July 17, 2001
    Assignee: Zeneca LTD
    Inventors: John Crosby, John David Pittam, Robert Antony Holt
  • Enzymatic process for stereoselective preparation of a tertiary alcohol by hydrolysis of corresponding acid
    Patent number: 6110729
    Abstract: A stereoselective method for making compounds of Formula VIII ##STR1## wherein A and * are as defined in the specification. Enzymic processes and intermediates useful for preparing compound of Formula VIII are disclosed.
    Type: Grant
    Filed: October 9, 1998
    Date of Patent: August 29, 2000
    Assignee: Zeneca Limited
    Inventors: John Crosby, John David Pittam, Robert Antony Holt
  • Process for preparing an antifungal azole with hydrazino and amidrazone intermediates
    Patent number: 5861516
    Abstract: A process for preparing an antifungal azole compound of formula (I) by reacting an epoxide with hydrazine to from a hydrazino compound which is subsequently reacted with an iminoether. The amidrazone product is subsequently reacted with an orthoformate to provide the antifungal azole. The azole, known as ZD0870, shows good activity against human fungal infections including Candida albicans, Cryptococcus neoformans and Aspergillus fumigatus.
    Type: Grant
    Filed: April 9, 1997
    Date of Patent: January 19, 1999
    Assignee: Zeneca Limited
    Inventors: Elwyn Peter Davies, John David Pittam, Keith Blakeney Mallion, Nigel Philip Taylor