162998-91-6Relevant academic research and scientific papers
Synthesis of Fmoc-/Boc-/Z-β-amino acids via Arndt-Eistert homologation of Fmoc-/Boc-/Z-α-amino acids employing BOP and PyBOP
Vasanthakumar,Babu, V. V. Suresh
, p. 1691 - 1695 (2007/10/03)
A simple and efficient protocol for Arndt-Eistert chain homologation of Fmoc-/Boc-/Z-α-amino acids using BOP or PyBOP as a coupling agent to the corresponding β-amino acids, synthesizing the key intermediate α-diazoketones as crystalline solids in good yield is described.
A general method for the synthesis of enantiomerically pure β- substituted, β-amino acids through α-substituted succinic acid derivatives
Evans, David A.,Wu, Leester D.,Wiener, John J. M.,Johnson, Jeffrey S.,Ripin, David H. B.,Tedrow, Jason S.
, p. 6411 - 6417 (2007/10/03)
A general procedure for the synthesis of enantiopure β-substituted, β- amino acids is presented. Alkylation of the sodium enolates derived from chiral N-acyloxazolidinone imides 2 (R = Me, i-Pr, t-Bu, Ph, Bn) with tert- butyl bromoacetate afforded the 2-substituted succinate derivatives 3 in good yields (82-89%) and with high selectivity (≥ 93;7). Following hydrolysis, Curtius rearrangement of the resulting carboxylic acid provided the enantiopure benzyloxycarbonyl (Cbz)-protected β-amino esters 6 in good yields (74-79%).
Peptidyl β-homo-aspartals: Specific inhibitors of interleukin-1β converting enzyme and its homologues (caspases)
Bajusz, Sandor,Fauszt, Iren,Nemeth, Klara,Barabas, Eva,Juhasz, Attila,Patthy, Miklos
, p. 1477 - 1482 (2007/10/03)
Inhibition of interleukin-1β convening enzyme (ICE), apopain, papain, thrombin and trypsin with substrate like peptidyl L- and D-α-aldehydes and their L-β-homo-aldehyde analogues was investigated. The L-β-homo-aspartals appear to be specific inhibitors fo
