A new approach to the stereoselective synthesis of conveniently protected α-allyl substituted amino acids; chiral key compounds in the synthesis of constrained peptide isostere constituents
摘要:
Enantiomerically pure alpha-allyl-N-Boc-aminoamides were prepared by Curtius rearrangement of alpha,alpha-dialkyl chiral 2-cyanoesters obtained by the diastereoselective allylation of chiral 2-cyanoesters according to a modification of our previously described procedure. (C) 1997 Elsevier Science Ltd.
A new approach to the stereoselective synthesis of conveniently protected α-allyl substituted amino acids; chiral key compounds in the synthesis of constrained peptide isostere constituents
摘要:
Enantiomerically pure alpha-allyl-N-Boc-aminoamides were prepared by Curtius rearrangement of alpha,alpha-dialkyl chiral 2-cyanoesters obtained by the diastereoselective allylation of chiral 2-cyanoesters according to a modification of our previously described procedure. (C) 1997 Elsevier Science Ltd.
On the synthesis of (S)-α-methylaspartic acid by diastereoselective alkylation of a chiral 2-cyanopropanoate
作者:Carlos Cativiela、Maria D. Díaz-de-Villegas、JoséA. Gálvez、Yolanda Lapeña
DOI:10.1016/s0040-4020(97)00249-4
日期:1997.4
A novel and efficient procedure for the synthesis of optically pure α-methylaspartic acid, based on the diastereoselectivealkylation of (1S,2R,4R)-10-(dicyclohexylsulfamoyl)isobornyl 2-cyanopropanoate with α-halocarbonyl compounds, is described.