Optically active fluorinated β-lactam building blocks: A novel fluorinated retroamide isostere.
摘要:
A new and versatile synthesis of optically active alpha-fluoro-malonamides derivatives from enantiomerically pure 3-fluoro-2-azetidinones is described. A fluorinated retroamide isostere based on these alpha-fluoro-malonamide was introduced into a small peptidomimetic for use as an HIV-1 protease inhibitor.
Optically active fluorinated β-lactam building blocks: A novel fluorinated retroamide isostere.
摘要:
A new and versatile synthesis of optically active alpha-fluoro-malonamides derivatives from enantiomerically pure 3-fluoro-2-azetidinones is described. A fluorinated retroamide isostere based on these alpha-fluoro-malonamide was introduced into a small peptidomimetic for use as an HIV-1 protease inhibitor.
A new enantioselective synthetic method for α-halo-α-alkylmalonates is reported. α-Alkylation of diphenylmethyl tert-butyl α-halomalonates under phase-transfer catalytic conditions (solid KOH, toluene, −40 °C) in the presence of (S,S)-3,4,5-trifluorophenyl-NAS bromide (5 mol%) afforded diphenylmethyl tert-butyl α-halo-α-alkylmalonates in very high chemical yields (up to 99%) and optical yields (up
A new and versatile synthesis of optically active α-fluoromalonamide derivatives from enantiomerically pure 3-fluoro-2-azetidinones is described. A fluorinated retroamide isostere based on these α-fluoromalonamides was introduced into a small peptidomimetic for use as an HIV-1 protease inhibitor. The same strategy was employed in efforts to prepare a novel trifluorostatone-type peptidomimetic.