期刊
BIOORGANIC & MEDICINAL CHEMISTRY
卷 44, 期 -, 页码 -出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.bmc.2021.116297
关键词
Prodrug; Carbon monoxide; Click chemistry; Cheletropic release; Inverse electron-demand Diels-Alder (IEDDA)
资金
- National Institutes of Health [R01DK119202]
- Georgia Research Alliance through an Eminent Scholar endowment
- Georgia State University
The article discusses recent advancements in utilizing prodrug approaches for the generation of carbon monoxide, including methods for CO release and formation of fluorescent reporters, and the construction of CO delivery platforms with additional functionalities. These approaches provide new insights for precise CO delivery and assessment of therapeutic efficacy.
Delivering a therapeutically active gaseous molecule represents very unique challenges in terms of both precise dosing and concentration assessment. To overcome these obstacles, there have been recent reports of using prodrug approaches for the in-vitro and in-vivo generation of carbon monoxide (CO), which is an endogenous signaling molecule with validated therapeutic efficacy in a range of animal models. Some key components of these approaches include the use of a hydrophobicity-driven Diels-Alder reaction under physiological conditions followed by a cheletropic reaction of the corresponding norbornadien-7-one intermediate, leading to extrusion of CO. With proper design, the same approach also leads to the formation of a fluorescent reporter, allowing for quantitative assessment of the amount of CO released. All these allow for a strategy of click, release, and fluoresce in delivering a precise dose of carbon monoxide with the ability to self-report delivery quantity and efficiency. This strategy has also been further refined to construct a CO delivery platform with additional functionalities such as bioorthogonal labeling, targeting, triggered release, and simultaneously delivery of more than one payload. This review highlights recent developments in this area.
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