A new synthesis of the amine fragment: an important intermediate to the anti-HIV drug lenacapavir
Anand Shinde,
Ramakrishna Sayini,
Piyal Singh
et al.
Abstract:Herein, we describe a new five-step approach to prepare 1-(3,6-dibromopyridin-2-yl)-2-(3,5-difluorophenyl)ethan-1-amine, an important intermediate in the synthesis of lenacapavir. The key step in the sequence is the Weinreb amide-based ketone synthesis, which provides an alternative entry point to the core structural component. Starting from the inexpensive 2-(3,5-difluorophenyl)acetic acid, the Weinreb amide synthesis and the followed nucleophilic substitution afford the ketone in 47% yield. The subsequent fu… Show more
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