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Advantages of combined photodynamic therapy in the treatment of oncological diseases. Biophys Rev 2022; 14:941-963. [DOI: 10.1007/s12551-022-00962-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2022] [Accepted: 05/24/2022] [Indexed: 12/22/2022] Open
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Chatterjee T, Roh GB, Shoaib MA, Suhl CH, Kim JS, Cho CG, Cho EJ. Visible-Light-Induced Synthesis of Carbazoles by in Situ Formation of Photosensitizing Intermediate. Org Lett 2017; 19:1906-1909. [DOI: 10.1021/acs.orglett.7b00681] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Tanmay Chatterjee
- Department
of Chemistry, Chung-Ang University, Seoul 06974, Republic of Korea
| | - Geum-bee Roh
- Department
of Chemistry, Chung-Ang University, Seoul 06974, Republic of Korea
| | - Mahbubul Alam Shoaib
- Department of Chemistry & Nanoscience, Ewha Womans University, Seoul 03760, Republic of Korea
| | - Chang-Heon Suhl
- Department
of Chemistry, Hanyang University, Seoul 04763, Republic of Korea
| | - Jun Soo Kim
- Department of Chemistry & Nanoscience, Ewha Womans University, Seoul 03760, Republic of Korea
| | - Cheon-Gyu Cho
- Department
of Chemistry, Hanyang University, Seoul 04763, Republic of Korea
| | - Eun Jin Cho
- Department
of Chemistry, Chung-Ang University, Seoul 06974, Republic of Korea
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Oliveira MS, Ghogare AA, Abramova I, Greer EM, Prado FM, Di Mascio P, Greer A. Mechanism of Photochemical O-Atom Exchange in Nitrosamines with Molecular Oxygen. J Org Chem 2015; 80:6119-27. [PMID: 26000876 DOI: 10.1021/acs.joc.5b00633] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The detection of an oxygen-atom photoexchange process of N-nitrosamines is reported. The photolysis of four nitrosamines (N-nitrosodiphenylamine 1, N-nitroso-N-methylaniline 2, N-butyl-N-(4-hydroxybutyl)nitrosamine 3, and N-nitrosodiethylamine 4) with ultraviolet light was examined in an (18)O2-enriched atmosphere in solution. HPLC/MS and HPLC-MS/MS data show that (18)O-labeled nitrosamines were generated for 1 and 2. In contrast, nitrosamines 3 and 4 do not exchange the (18)O label and instead decomposed to amines and/or imines under the conditions. For 1 and 2, the (18)O atom was found not to be introduced by moisture or by singlet oxygen [(18)((1)O2 (1)Δg)] produced thermally by (18)O-(18)O labeled endoperoxide of N,N'-di(2,3-hydroxypropyl)-1,4-naphthalene dipropanamide (DHPN(18)O2) or by visible-light sensitization. A density functional theory study of the structures and energetics of peroxy intermediates arising from reaction of nitrosamines with O2 is also presented. A reversible head-to-tail dimerization of the O-nitrooxide to the 1,2,3,5,6,7-hexaoxadiazocane (30 kcal/mol barrier) with extrusion of O═(18)O accounts for exchange of the oxygen atom label. The unimolecular cyclization of O-nitrooxide to 1,2,3,4-trioxazetidine (46 kcal/mol barrier) followed by a retro [2 + 2] reaction is an alternative, but higher energy process. Both pathways would require the photoexcitation of the nitrooxide.
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Affiliation(s)
- Marilene Silva Oliveira
- †Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, CEP 05508-000, São Paulo, Brazil.,‡Department of Chemistry and Graduate Center, Brooklyn College, City University of New York, Brooklyn, New York 11210, United States
| | - Ashwini A Ghogare
- ‡Department of Chemistry and Graduate Center, Brooklyn College, City University of New York, Brooklyn, New York 11210, United States
| | - Inna Abramova
- ‡Department of Chemistry and Graduate Center, Brooklyn College, City University of New York, Brooklyn, New York 11210, United States
| | - Edyta M Greer
- §Department of Natural Sciences, Baruch College, City University of New York, New York, New York 10010, United States
| | - Fernanda Manso Prado
- †Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, CEP 05508-000, São Paulo, Brazil
| | - Paolo Di Mascio
- †Departamento de Bioquímica, Instituto de Química, Universidade de São Paulo, CEP 05508-000, São Paulo, Brazil
| | - Alexander Greer
- ‡Department of Chemistry and Graduate Center, Brooklyn College, City University of New York, Brooklyn, New York 11210, United States
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