Patents by Inventor Kathleen Raye

Kathleen Raye 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).

  • Benzo[5.6]pyrano[2.3.4-ij]quinolizine and benzo[5.6]thiopyrano[2.3.4-ij]quinolizine derivatives as antibacterial and antineoplastic agents
    Patent number: 5618813
    Abstract: Benzo[5.6]pyrano[2.3.4-ij]quinolizine and benzo[5.6]thiopyrano[2.3.4-ij]quinolizine compounds having the formula ##STR1## wherein A is sulfur or oxygen; R.sup.1 is selected from the group consisting of hydroxy, protected-hydroxy, C.sub.1 -C.sub.6 -alkoxy, halo, amino, C.sub.1 -C.sub.6 -alkylamino, hydroxy-C.sub.1 -C.sub.6 -alkylamino, bicyclic nitrogen-containing heterocycle, nitrogen-containing aromatic heterocycle, and nitrogen-containing heterocycle; R.sup.2 is selected from the group consisting of hydrogen, halo, C.sub.1 -C.sub.6 -alkyl, or halo-C.sub.1 -C.sub.6 -alkyl; R.sup.3 is selected from the group consisting of hydrogen, C.sub.1 -C.sub.6 -alkyl or C.sub.5 -C.sub.7 -cycloalkyl; and R.sup.4 and R.sup.5 are independently selected from the group consisting of hydrogen, C.sub.1 -C.sub.6 -alkyl or C.sub.1 -C.sub.
    Type: Grant
    Filed: May 26, 1995
    Date of Patent: April 8, 1997
    Assignee: Abbott Laboratories
    Inventors: Daniel T. Chu, Qun Li, Kathleen Raye