2-Oxabicyclo[2.1.1]hexanes: Synthesis, Properties, and Validation as Bioisosteres of ortho- and meta-Benzenes

Angew Chem Int Ed Engl. 2024 May 6;63(19):e202319831. doi: 10.1002/anie.202319831. Epub 2024 Apr 3.

Abstract

We have developed a general and practical approach towards 2-oxabicyclo[2.1.1]hexanes with two and three exit vectors via an iodocyclization reaction. The obtained compounds have been easily converted into the corresponding building blocks for use in medicinal chemistry. 2-Oxabicyclo[2.1.1]hexanes have been incorporated into the structure of five drugs and three agrochemicals, and validated biologically as bioisosteres of ortho- and meta-benzenes.

Keywords: 2-oxabicyclo[2.1.1]hexane; agrochemistry; bioisostere; cyclobutane; medicinal chemistry.