期刊
CHEMICAL SCIENCE
卷 9, 期 23, 页码 5295-5300出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c8sc01355a
关键词
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资金
- EPSRC Centre for Doctoral Training in Synthesis for Biology and Medicine [EP/L015838/1]
- AstraZeneca
- Diamond Light Source
- Defence Science and Technology Laboratory
- Evotec
- GlaxoSmithKline
- Janssen
- Novartis
- Pfizer
- Syngenta
- Takeda
- UCB
- Vertex
- EPSRC [EP/M019195/1]
- Heinrich Hertz Foundation
- EPSRC [EP/M019195/1] Funding Source: UKRI
Bicyclo[ 1.1.1] pentanes (BCPs) are important bioisosteres of 1,4-disubstituted arenes, tert-butyl and acetylenic groups that can impart physicochemical benefits on drug candidates. Here we describe the synthesis of BCPs bearing carbon and halogen substituents under exceptionally mild reaction conditions, via triethylborane-initiated atom-transfer radical addition ring-opening of tricyclo[ 1.1.1.01,3] pentane (TCP) with alkyl halides. This chemistry displays broad substrate scope and functional group tolerance, enabling application to BCP analogues of biologically-relevant targets such as peptides, nucleosides, and pharmaceuticals. The BCP halide products can be converted to the parent phenyl/tert-butyl surrogates through triethylborane-promoted dehalogenation, or to other derivatives including carbonyls, alcohols, and heterocycles.
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