Potential carcinostatics. 4. Synthesis and biological properties of erythro- and threo-.beta.-fluoroaspartic acid and erythro-.beta.-fluoroasparagine
作者:Martinus J. Wanner、Johanna J. M. Hageman、Gerrit Jan Koomen、Upendra K. Pandit
DOI:10.1021/jm00175a017
日期:1980.1
1,4-dioate [(E)- and (Z)-2] were synthesized in two ways: (a) by elimination of hydrogen fluoride from di-tert-butyl beta,beta-difluoroaspartate under the influence of 1,5-diazabicyclo[4.3.0]non-5-ene and (b) by amination with the ammonium acetate of di-tert-butyl monofluorooxaloacetate (3), obtained via condensation of tert-butyl monofluoroacetate with di-tert-butyl oxalate. Reduction of 2 with sodium