523977-84-6Relevant academic research and scientific papers
Novel chalcogenoxanthylium dyes for purging blood pathogens and for photodynamic therapy
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Page/Page column 9, (2010/10/19)
Provided are chalcogenoxanthylium compounds which can effectively be used as sensitizers in photodynamic therapy, virucides in photodynamic antimicrobial chemotherapy and reversal agents of Pgp function in cancer cells. Further provided is a general metho
Synthesis, properties, and photodynamic properties in vitro of heavy-chalcogen analogues of tetramethylrosamine
Detty, Michael R.,Prasad, Paras N.,Donnelly, David J.,Ohulchanskyy, Tymish,Gibson, Scott L.,Hilf, Russell
, p. 2537 - 2544 (2007/10/03)
Thio and seleno analogues of tetramethylrosamine were prepared by the directed-metalation/cyclization of the corresponding N,N-diethyl 2-(3-dimethylaminophenylchalcogeno)-4-dimethylaminobenzamide to the 2,7-bis-(N,N-dimethylamino)-9H-chalcogenoxanthen-9-one followed by the addition of phenylmagnesium bromide, dehydration, and ion exchange to the chloride salt. The thio and seleno tetramethylrosamines had longer wavelengths of absorption and higher quantum yields for the generation of singlet oxygen than tetramethylrosamine. Both the thio and selenoanalogues of tetramethylrosamine were efficient photosensitizers against R3230AC rat mammary adenocarcinoma cells in vitro.
Selenoxanthones via directed metalations in 2-arylselenobenzamide derivatives
Brennan, Nancy K.,Donnelly, David J.,Detty, Michael R.
, p. 3344 - 3347 (2007/10/03)
The reaction of N, N-diethyl 4-(N′, N′-dimethylamino)-2-phenylselenobenzamide (7a), N, N-diethyl 4-methoxy-2-phenylselenobenzamide (7b), N, N-diethyl 4-(N′, N′-dimethylamino)-2-[(3-(N, N-dimethylamino)phenylseleno]-benzamide (7c), and N, N-diethyl 4-metho
