Title

CHLORIN AND PORPHYRIN DERIVATIVES AS POTENTIAL PHOTOSENSITIZERS IN PHOTODYNAMIC THERAPY

Document Type

Article

Publication Date

1-1-1991

Abstract

Abstract— In order to find a photosensitizer with better optical properties and pharmacokinetics than Photofrin II, a series of new photosensitizers related to methyl pheophorbide‐a and chlorin‐e6 were synthesized. These compounds absorb at substantially longer wavelengths (Λ max 660 nm) than does Photofrin II (630 nm) and show promise for use in photodynamic therapy. Among the porphyrins, we observed that long carbon chain ether derivatives are better photosensitizers than their ester analogs. These sensitizers were tested for in vivo photosensitizing activity vis‐a‐vis Photofrin II, using the standard screening system of DBA/2 mice bearing transplanted SMT/F tumors. Most of these photosensitizers were found to have better tumorcidal photosensitizing activity than Photofrin II and demonstrated more rapid attenuation of normal tissue photosensitivity with time after administration vis‐a‐vis Photofrin II. Copyright © 1991, Wiley Blackwell. All rights reserved

Publication Source (Journal or Book title)

Photochemistry and Photobiology

First Page

65

Last Page

72

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