Synthesis of Islatravir Enabled by a Catalytic, Enantioselective Alkynylation of a Ketone.
ORGANIC LETTERS(2020)
摘要
The synthesis of the potent anti-HIV investigational treatment islatravir is described. The key step in this synthesis is a highly enantioselective catalytic asymmetric alkynylation of a ketone. This reaction is a rare example of the asymmetric addition of an alkyne nucleophile to a ketone through ligand-accelerated catalysis that was performed on a greater than 100 g scale. By leveraging a multienzyme cascade, a highly diastereoselective aldol-glycosylation was used to complete the target in eight steps.
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