A General and Enantioselective Approach to Pentoses: A Rapid Synthesis of PSI-6130, the Nucleoside Core of Sofosbuvir
作者:Manuel Peifer、Raphaëlle Berger、Valerie W. Shurtleff、Jay C. Conrad、David W. C. MacMillan
DOI:10.1021/ja502205q
日期:2014.4.23
An efficient route towards biologically relevant pentose derivatives is described. The de novo synthetic strategy features an enantioselective alpha-oxidation reaction enabled by a chiral amine in conjunction with copper(II) catalysis. A subsequent Mukaiyama aldol coupling allows for the incorporation of a wide array of modular two-carbon fragments. Lactone intermediates accessed via this route provide a useful platform for elaboration, as demonstrated by the preparation of a variety of C-nucleosides and fluorinated pentoses. Finally, this work has facilitated expedient syntheses of pharmaceutically active compounds currently in clinical use.
Synthesis of an ethylene glycol cross-linked amino acid
Synthesis of an ethylene glycol-containing amino acid, (2R,9S)-N2-Cbz-N9-Boc-2,9-diamino-4,7-dioxadecanedioic acid 1-phenacyl 10-methyl diester 1, was studied through direct alkylation of N-Boc-L-serine and through BF3-catalyzed ring opening of N-acylaziridinecarboxylates.