In order to aid in elucidation of the structure of the active components in hematoporphyrin derivative (Hpd), the first syntheses of an ether-linked hematoporphyrin dimer ( 6) and trimer ( 12) are described. After ester hydrolysis, these compounds were positively identified, by comparative HPLC, as
Syntheses, stability, and tumorcidal activity of porphyrin dimers and trimers with ether linkages
โ Scribed by Ravindra K. Pandey; Fuu-Yau Shiau; Craig J. Medforth; Thomas J. Dougherty; Kevin M. Smith
- Book ID
- 104221817
- Publisher
- Elsevier Science
- Year
- 1990
- Tongue
- French
- Weight
- 293 KB
- Volume
- 31
- Category
- Article
- ISSN
- 0040-4039
No coin nor oath required. For personal study only.
โฆ Synopsis
The first syntheses of a series of regiochemically pure porphyrin dimers and trimers with ether linkages which are structurally related to Photofin@ are described. Stability of these oligomers was investigated using variable temperature proton NiUR spectroscopy, and preliminary biological results reveal that manupulation of peripheral substituents causes a remark-able dfference in photosensitizing ability in vivo.
๐ SIMILAR VOLUMES
Syntheses and spectroscopic properties of pyropheophorbide-porphyrindimers and a bis-Pyropheophorbide-porphyrin trimeraredescribed.Fluorescence spectroscopic data of theoligomersrevealthat themacrocyclesin thesystemsareonlyweaklycoupled.O 1997 Elsevier ScienceLtd.
## Abstract Oxidative degradation studies of dimeric porphyrins provide valuable information about the individual linkages between the porphyrin units. MS and NMR data of the degradation products of hematoporphyrin derivative furnish unambiguous evidence of ester and ether linkages in the diโ and o