1
|
Kozyrev A, Ethirajan M, Chen P, Ohkubo K, Robinson BC, Barkigia KM, Fukuzumi S, Kadish KM, Pandey RK. Synthesis, photophysical and electrochemistry of near-IR absorbing bacteriochlorins related to bacteriochlorophyll a. J Org Chem 2012; 77:10260-71. [PMID: 23082726 PMCID: PMC3526342 DOI: 10.1021/jo301895p] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A series of new bacteriochlorins was synthesized using 13(2)-oxo-bacteriopyropheophorbide a (derived from bacteriochlorophyll a) as a starting material, which on reacting with o-phenylenediamine and 1,10-diaminonaphthalene afforded highly conjugated annulated bacteriochlorins with fused quinoxaline, benzimidazole, and perimidine rings, respectively. The absorption spectra of these novel bacteriochlorins demonstrated remarkably red-shifted intense Q(y) absorption bands observed in the range of 816-850 nm with high molar extinction coefficients (89,900-136,800). Treatment of 13(2)-oxo-bacteriopyropheophorbide a methyl ester with diazomethane resulted in the formation of bacterioverdins containing a fused six-membered methoxy-substituted cyclohexenone (verdin) as an isomeric mixture. The pure isomers which exhibit long-wavelength absorptions in the near-IR region (865-890 nm) are highly stable at room temperature with high reactivity with O(2) at the triplet photoexcited state and favorable redox potential and could be potential candidates for use as photosensitizers in photodynamic therapy (PDT).
Collapse
Affiliation(s)
| | - Manivannan Ethirajan
- Chemistry Division, PDT Center, Cell Stress Biology, Roswell Park Cancer Institute, Buffalo, NY 14263c
| | - Ping Chen
- Department of Chemistry, University of Houston, Houston, TX, 77204-5009
| | - Kei Ohkubo
- Department of Material and Life Science, Graduate School of Engineering, Osaka University, ALCA (JST), 2-1 Yamada-oka, Suita, Osaka 565-0871, Japan
| | | | | | - Shunichi Fukuzumi
- Department of Material and Life Science, Graduate School of Engineering, Osaka University, ALCA (JST), 2-1 Yamada-oka, Suita, Osaka 565-0871, Japan
- Department of Bioinspired Science, Ewha Womans University, Seoul, 120-750, Korea
| | - Karl M. Kadish
- Department of Chemistry, University of Houston, Houston, TX, 77204-5009
| | - Ravindra K. Pandey
- Chemistry Division, PDT Center, Cell Stress Biology, Roswell Park Cancer Institute, Buffalo, NY 14263c
| |
Collapse
|
2
|
Kay CWM, Conti F, Fuhs M, Plato M, Weber S, Bordignon E, Carbonera D, Robinson BC, Renner MW, Fajer J. Magnetic Resonance Studies and Molecular Orbital Calculations on the Doublet and Triplet States of Bacteriopurpurin: a Potential Second-Generation Photosensitizer for Photodynamic Therapy. J Phys Chem B 2002. [DOI: 10.1021/jp013432k] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
3
|
|