Investigation of a Bicyclo[1.1.1]pentane as a Phenyl Replacement within an LpPLA2 Inhibitor.
Measom, N.D., Down, K.D., Hirst, D.J., Jamieson, C., Manas, E.S., Patel, V.K., Somers, D.O.(2017) ACS Med Chem Lett 8: 43-48
- PubMed: 28105273 
- DOI: https://doi.org/10.1021/acsmedchemlett.6b00281
- Primary Citation of Related Structures:  
5LP1 - PubMed Abstract: 
We describe the incorporation of a bicyclo[1.1.1]pentane moiety within two known LpPLA 2 inhibitors to act as bioisosteric phenyl replacements. An efficient synthesis to the target compounds was enabled with a dichlorocarbene insertion into a bicyclo[1.1.0]butane system being the key transformation. Potency, physicochemical, and X-ray crystallographic data were obtained to compare the known inhibitors to their bioisosteric counterparts, which showed the isostere was well tolerated and positively impacted on the physicochemical profile.
Organizational Affiliation: 
GlaxoSmithKline, Medicines Research Centre, Gunnels Wood Road, Stevenage, Hertfordshire, SG1 2NY, U.K.; Department of Pure and Applied Chemistry, University of Strathclyde, Thomas Graham Building, 295 Cathedral Street, Glasgow, G1 1XL, U.K.