Novel methods and syntheses toward HIV/AIDS and tuberculosis pharmaceuticals

Abstract

[chemical formula] Described herein is a novel Lewis acid catalyzed rearrangement-coupling of oxygen heterocycles and bis(diethylamino)chlorophosphine that provides direct formation of the phosphonomethyl ether functionality found in several important antiretroviral agents. A wide range of dioxolanes and 1,3-dioxanes may be employed, furnishing the desired products in good yield. The utility of this method is demonstrated in a novel synthesis of tenofovir, an antiretroviral drug used in the treatment of HIV/AIDS and hepatitis B. [chemical formula] We have proposed a novel synthesis toward bedaquiline, the latest pharmaceutical to be released in the market for the treatment of multi-drug resistant tuberculosis. The synthesis of the final epoxide intermediate of our route has been achieved on multi-gram scale, and the subject of future investigation will focus on the final epoxide opening reaction. Our proposed route uses readily available, inexpensive starting materials, and would afford bedaquiline in a convergent fashion requiring six steps.