SYNTHESIS OF OSELTAMIVIR CONTAINING PHOSPHONATE CONGENERS WITH ANTI-INFLUENZA ACTIVITY
申请人:Wong Chi-Huey
公开号:US20100113397A1
公开(公告)日:2010-05-06
Novel phosphonate compounds are described. The compounds have activity as neuraminidase inhibitors against wild-type and H274Y mutant of H1N1 and H5N1 viruses. The present disclosure also provides an enantioselective synthetic route to known neuraminidase inhibitors oseltamivir and the anti-flu drug Tamiflu®, as well as novel phosphonate compounds, via D-xylose. Another efficient and flexible synthesis of Tamiflu and the highly potent neuraminidase inhibitor Tamiphosphor was also achieved in 11 steps and >20% overall yields from the readily available fermentation product (1S-cis)-3-bromo-3,5-cyclohexadiene-1,2-diol. Most of the reaction intermediates were obtained as crystals without tedious purification procedures. The key transformations include an initial regio- and stereoselective bromoamidation of a bromoarene cis-dihydrodiol, as well as the final palladium-catalyzed carbonylation and phosphonylation.
Bromoformyloxylation and bromoacetoxylation of olefins proceed smoothly and instantaneously in the presence of N,N-dibromo-p-toluene sulfonamide without any catalyst. The one step reactions can be carried out with all kinds of olefins in high yield and high regio and stereoselectivities. (C) 2011 Elsevier Ltd. All rights reserved.
Bresson,A. et al., Bulletin de la Societe Chimique de France, 1970, p. 2432 - 2439
作者:Bresson,A. et al.
DOI:——
日期:——
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