Discovery of N-Substituted Oseltamivir Derivatives as Potent and Selective Inhibitors of H5N1 Influenza Neuraminidase
摘要:
To discover group-1-specific neuraminidase (NA) inhibitors that are especially involved in combating the H5N1 virus, two series of oseltamivir derivatives were designed and synthesized by targeting the 150-cavity. Among these, compound 20l was the most potent N1-selective inhibitor, with IC50 values of 0.0019, 0.0038, and 0.0067 mu M against NAs from three H5N1 viruses. These values are better than those of oseltamivir carboxylate. Compound 32 was another potent N1-selective inhibitor that exhibited a 12-fold increase in activity against the H274Y mutant relative to oseltamivir carboxylate. Molecular docking studies revealed that the 150-cavity was an auxiliary binding site that may contribute to the high selectivity of these compounds. The present work is a significant breakthrough in the discovery of potent group-1-specific neuraminidase inhibitors, which may be further investigated for the treatment of infection by the H5N1 virus.
REACTIONS OF NITRONES BEARING AN OLEFINIC DIPOLAROPHILE WITH DIMETHYL ACETYLENEDICARBOXYLATE. INTER- AND INTRAMOLECULAR DOUBLE 1,3-DIPOLAR CYCLOADDITIONS
作者:Otohiko Tsuge、Kazunori Ueno、Shuji Kanemasa
DOI:10.1246/cl.1984.797
日期:1984.5.5
The reaction of nitrones, derived from benzaldehydes having an olefinic dipolarophile at the o-position, with DMAD provides the first example for the inter- and intramolecular double 1,3-dipolar cycloaddition.