Patents by Inventor Arthur W. R. Tyrrell

Arthur W. R. Tyrrell 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).

  • Prostacyclin aza analogue intermediates
    Patent number: 4341708
    Abstract: An intermediate compound which is a perhydrofuro [3,2-6] pyrrole of the formula: ##STR1## wherein: R.sub.2 is hydrogen or C.sub.1-4 alkyl; andR.sub.3 is C.sub.4-9 alkyl, C.sub.5-7 cycloalkyl or C.sub.5-7 cycloalkyl C.sub.1-6 alkyl;for use in the synthesis of prostacyclin aza analogues having anti-thrombotic activity.
    Type: Grant
    Filed: February 2, 1981
    Date of Patent: July 27, 1982
    Assignee: Beecham Group Limited
    Inventors: Frederick Cassidy, Keith H. Baggaley, Arthur W. R. Tyrrell
  • 2,4-Disubstituted 5-oxo-5H-hexahydrofuro[3,2b]pyrroles
    Patent number: 4262008
    Abstract: A compound of formula (I): ##STR1## wherein: A is >CH-- and n is 1 to 6; orA is >C.dbd.CH-- and n is 0 to 5; orA is >CH--CH.dbd.CH and n is 0 to 4; andR.sub.1 is hydrogen or C.sub.1-6 alkyl;R.sub.2 is hydrogen or C.sub.1-4 alkyl; andR.sub.3 is C.sub.4-9 alkyl, C.sub.5-7 cycloalkyl or C.sub.5-7 cycloalkyl-C.sub.1-6 alkyl; and salts thereof, has antiplatelet aggregation and bronchodilation activity.
    Type: Grant
    Filed: October 9, 1979
    Date of Patent: April 14, 1981
    Assignee: Beecham Group Limited
    Inventors: Frederick Cassidy, Keith H. Baggaley, Arthur W. R. Tyrrell