Patents by Inventor Lily Y. Xie

Lily Y. Xie 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).

  • Porphocyanine and CNC-expanded porphyrins
    Patent number: 5726304
    Abstract: Compounds of the formula ##STR1## and the metalated forms and salts thereof; wherein n is an integer of 1-4; andwherein each P.sub.i is independently a pyrrole residue of the formula ##STR2## wherein each R.sub.ia and R.sub.ib is independently a noninterfering substituent, andwherein each Z.sub.i is independently a covalent bond; or isa meso bridging group of the formula ##STR3## or is an N-meso bridging group of the formula.dbd.N--.revreaction.--N.dbd.; or isa CC linkage of the formula ##STR4## or is a CNCCNC linkage of the formula ##STR5## wherein each R.sub.ic, R.sub.id, R.sub.ie, R.sub.if and R.sub.ig is independently a noninterfering substituent; or isa CNC linkage of the formula--CH.dbd.N--CH.dbd..revreaction..dbd.CH--N.dbd.CH--wherein at least one Z.sub.i is said CNC linkage, are disclosed. These compounds are useful in photodynamic therapy and diagnosis. The metalated forms when the metal is paramagnetic are useful as MRI contrast agents.
    Type: Grant
    Filed: April 26, 1994
    Date of Patent: March 10, 1998
    Assignee: The University of British Columbia
    Inventors: Hang Tang, Lily Y. Xie, Tilak Wijesekera, David Dolphin, Ross W. Boyle