Asymmetric Synthesis of ?-Amino Acids and ?-N-Hydroxyamino Acids fromN-Acylbornane-10,2-sultams: 1-chloro-1-nitrosocyclohexane as a practical [NH2+] equivalent
作者:Wolfgang Oppolzer、Osamu Tamura、J�Rg Deerberg
DOI:10.1002/hlca.19920750622
日期:1992.10.2
derivatives 5. These were converted into various amino acids 7, N-hydroxyamino acids 8, and an N-Boc-amino acid 9. (S, S)-Isoleucine (17) and (S, S)-2-acetamido-3-phenylbutyric acid (23) were obtained from N-crotonoylsultam 15via 1,4-addition of an organomagnesium or organocopper reagent followed by enolate ‘amination’ with 1.