Late-Stage C(sp3)–H Methylation of Drug Molecules

Autor: Mao, Edna, MacMillan, David W.C.
Zdroj: Journal of the American Chemical Society; February 2023, Vol. 145 Issue: 5 p2787-2793, 7p
Abstrakt: Methyl groups are well understood to play a critical role in pharmaceutical molecules, especially those bearing saturated heterocyclic cores. Accordingly, methods that install methyl groups onto complex molecules are highly coveted. Late-stage C–H functionalization is a particularly attractive approach, allowing chemists to bypass lengthy syntheses and facilitating the expedited synthesis of drug analogues. Herein, we disclose the direct introduction of methyl groups via C(sp3)–H functionalization of a broad array of saturated heterocycles, enabled by the merger of decatungstate photocatalysis and a unique nickel-mediated SH2 bond formation. To further demonstrate its synthetic utility as a tool for late-stage functionalization, this method was applied to a range of drug molecules en route to an array of methylated drug analogues.
Databáze: Supplemental Index