N.alpha.-2-(4-nitrophenylsulfonyl)ethoxycarbonyl-amino acids

Details N.alpha.-2-(4-nitrophenylsulfonyl)ethoxycarbonyl-amino acids N.alpha.-2-(4-nitrophenylsulfonyl)ethoxycarbonyl-amino acids

C - Chemistry, Metallurgy

07

C

C07C 317/18 (2006.01)

Patent

CA 2268544

Protected amino acid derivatives of general formula (I) wherein R1 represent hydrogen atom, and R2 may represent hydroxymethyl, 1-hydroxyethyl, 4- hydroxybenzyl, imidazolyl-2-methyl, benzyloxymethyl, 1-benzyloxyethyl, 4- benzyloxybenzyl, benzyloxycarbonylmethyl, 2-(benzyloxycarbonyl)ethyl, S- benzylthiomethyl, S-(diphenylmethyl)thiomethyl, 4-(benzyloxycarbamido)butyl, 3- guanidinopropyl, 3-(NG-toluenesulfonyl)guanidinopropyl, 3-(NG- nitro)guanidinopropyl, 3-[NG-(4-methoxy-2,3,6-trimethylbenzenesulfonyl)]- guanidinopropyl, N-(4,4'-dimethoxybenzhydryl)carboxamidomethyl, 2-[N-(4,4'- dimethoxybenzhydryl)carboxamido]ethyl, S-tert-butyldithiomethyl, 4-[2-(4- nitrophenylsulfonyl)ethoxycarbamido]-butyl, propyl, butyl, ethyl, 3- (benzyloxycarbamido)propyl, or 3-(tert-butoxycarbamido)propyl. Methods for the preparation of said derivatives are provided.

Dérivés d'acides aminés protégés de formule générale (I), dans laquelle R1 représente un atome d'hydrogène, et R2 peut représenter hydroxyméthyle, 1-hydroxyéthyle, 4-hydroxybenzyle, imidazolyl-2-méthyle, benzyloxyméthyle, 1-benzyloxyéthyle, 4-benzyloxybenzyle, benzyloxycarbonylméthyle, 2-(benzyloxycarbonyl)éthyle, S-benzylthiométhyle, S-(diphényméthyl)thiométhyle, 4-(benzyloxycarbamido)butyle, 3-guanidinopropyle, 3-(N<G>-toluènesulfonyl)guanidinopropyle, 3-(N<G>-nitro)guanidinopropyle, 3-[N<G>-(4-méthoxy-2,3,6-triméthylbenzènesulfonyl)]-guanidinopropyle, N-(4,4'-diméthoxybenzhydryl)carboxamidométhyle, 2-[N-(4,4'- diméthoxybenzhydryl) carboxamido]éthyle, S-tert-butyldithiométhyle, 4-[2-(4-nitrophénylsulfonyl)éthoxycarbamido]-butyle, propyle, butyle, éthyle, 3-(benzyloxycarbamido)propyle, ou 3-(tert-butoxycarbamido)propyle. L'invention concerne également des procédés de préparation desdits dérivés.

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