Intramolecular Mitsunobu displacement with carbon nucleophiles: preparation of .alpha.-nitrocyclopropanes
摘要:
Gamma-nitroalkanols are converted to alpha-nitrocyclopropanes with inversion of configuration in good to excellent yields using diethyl azodicarboxylate and Ph3P.
A copper-catalyzed asymmetrichydrosilylation of β-nitroethyl aryl ketones has been disclosed, and the corresponding chiral alcohols could be obtained in high yields (up to 99% yield) and excellent enantioselectivities (up to 96% ee). Moreover, the reaction worked well on a gram scale with 0.3 mol % of ligand loading, indicating that our protocol has potential applications in the synthesis of important
NOVEL COMPOUNDS AND METHODS FOR SYNTHESIS AND THERAPY
申请人:BISCHOFBERGER NORBERT W.
公开号:US20050176758A1
公开(公告)日:2005-08-11
Novel compounds are described. The compounds generally comprise an acidic group, a basic group, a substituted amino or N-acyl and a group having an optionally hydroxylated alkane moiety. Pharmaceutical compositions comprising the inhibitors of the invention are also described. Methods of inhibiting neuraminidase in samples suspected of containing neuraminidase are also described. Antigenic materials, polymers, antibodies, conjugates of the compounds of the invention with labels, and assay methods for detecting neuraminidase activity are also described.