Synthesis, optical properties and preliminary in vitro photodynamic effect of pyridyl and quinoxalyl substituted chlorins. Issue 8 (15th April 2015)

• Record Type: Journal Article
• Authors: Li, Jiazhu; Zhang, Xin; Liu, Yang; Yoon, Il; Kim, Dong-Kyoo; Yin, Jun-Gang; Wang, Jin-Jun; Shim, Young Key
• Is Part Of: Bioorganic & medicinal chemistry. Volume 23:Issue 8(2015)
• Page Start: 1684
• Page End: 1690
• Publication Date: 2015-04-15
• Subjects: Chlorophyll a -- Pyridyl chlorin -- Quinoxalyl chlorin -- Photosensitizer -- Photodynamic therapy; Bioorganic chemistry -- Periodicals; Pharmaceutical chemistry -- Periodicals; Biochemistry -- Periodicals; Chemistry, Clinical -- Periodicals; Chemistry, Organic -- Periodicals; Chimie bio-organique -- Périodiques; Chimie pharmaceutique -- Périodiques; 615.19
• DOI: 10.1016/j.bmc.2015.03.021
• Languages: English
• ISSNs: 0968-0896

Abstract

Graphical abstract: Abstract: A series of chlorophyll a -based chlorins conjugated with pyridyl or quinoxalyl group at different positions were synthesized, characterized and evaluated for their photodynamic effect in vitro. It was found that all the pyridyl and quinoxalyl chlorins showed promising photocytotoxicities but nontoxic without irradiation in HeLa cells, and the substituted types and positions had a significant influence on the photocytotoxicities of the chlorophyll a -based chlorins. All the chlorins with a pyridyl group at the C–D ring end exhibited relatively high photocytotoxicity as compared to those with 3 2 -pyridyl. Among them, compound12 conjugated with a pyridyl group at its C12 position showed the best photodynamic effect in HeLa cells with an IC50 value of 0.033 μM. These facts, associated with the relative high long wavelength absorptions of those chlorins may provide valuable ways to design and prepare promising photosensitizers for application in photodynamic therapy.