PATENT DETAILS

Patent ID:
71
Inventors:
Claire K Johnson, David Dolphin
Title:
Synthesis of Long-Wavelength Absorbing Photosensitizers
Country:
United States
Patent No:
6093739
Grant Date:
2000-07-25
Abstract:
The present invention provides for novel therapeutic macrocycle compounds useful in photodynamic therapy that are based on the chlorin ring system. The macrocycle compounds have, in many cases, wavelengths of activation at about 670 nm, characteristics of chlorins, and are stabilized against oxidation by the attachment to the chlorin ring of a structure that comprises one or more exocyclic rings that contribute at least one nitrogen atom. Protonation or covalent modification of this nitrogen atom, or other covalent modification of the one or more exocyclic rings permits optimization of pharmacalogically relevant properties including, for example, solubility. Representative chlorins include the pyridochlorins depicted as follows

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