C-benzylation of various sodium enolates derived frommethyl malonate, beta-ketoesters, a beta-cyanoester, a beta-cyanosulfone, ketones and a carboxylic ester is reported. Reaction of alkoxydiphenylsulfonium salts formed by treating various benzyl alcohols with diphenyl sulfide bis(trifluoromethanesulfonate) (derived from trifluoromethanesulfonic anhydride and diphenyl sulfoxide) proceeded smoothly, and
A facile one-pot C-benzylation of various sodium enolates derived from methyl malonate, beta-ketoesters, a beta-cyanoester, a beta-cyanosulfone, ketones and a carboxylic ester is reported. Reaction of alkoxydiphenylsulfonium salts formed by treating various benzyl alcohols with diphenyl sulfide bis(trifluoromethanesulfonate) (derived from trifluoromethanesulfonic anhydride and diphenyl sulfoxide) proceeded
Palladium-catalyzed substitution of esters of naphthylmethanols, 1-naphthylethanols, and analogues by sodium dimethyl malonate. Stereoselective synthesis from enantiomerically pure substrates
The palladium-catalyzed substitution of carbonates of the titled alcohols was performed at lower temperature than the previously reported reaction of the corresponding acetates. The use of enantiomericallypure carbonates gave substitution products with overall retention of the configuration (up to 97%).
Inhibitor of ribonucleotide reductase of herpes viruses
申请人:MERCK & CO. INC.
公开号:EP0438873A1
公开(公告)日:1991-07-31
A series of substituted peptides have been found to possess antiviral potency - specifically against herpes viruses - by selectively inhibiting the viral ribonucleotide reductase enzyme.