Synthesis of N-protected erythro-phenylalanylepoxides
摘要:
The synthesis of erythro-isomers of N-alpha-t-Boc-, N-alpha-Fmoc- and N-alpha-Cbz-L-phenylalanylepoxides from the appropriate N-alpha-protected L-phenylalanines via bromomethylketone intermediates is described.
Continuous Flow Synthesis of α-Halo Ketones: Essential Building Blocks of Antiretroviral Agents
作者:Vagner D. Pinho、Bernhard Gutmann、Leandro S. M. Miranda、Rodrigo O. M. A. de Souza、C. Oliver Kappe
DOI:10.1021/jo402849z
日期:2014.2.21
combined with anhydrous diazomethane in a tube-in-tubereactor. The tube-in-tubereactor consists of an inner tube, made from a gas-permeable, hydrophobic material, enclosed in a thick-walled, impermeable outer tube. Diazomethane is generated in the inner tube in an aqueous medium, and anhydrous diazomethane subsequently diffuses through the permeable membrane into the outer chamber. The α-diazo ketone
Peptidomimetics Through Click Chemistry: Synthesis of Novel β-Keto Triazole Acids from N-Protected Amino Acids
作者:N. Narendra、T. M. Vishwanatha、Vommina V. Sureshbabu
DOI:10.1007/s10989-010-9214-z
日期:2010.12
An efficient procedure for the preparation of azidomethylketones from N-urethane protected amino acids and their application in Cu(I) catalyzed azide-alkyne cycloaddition reaction are described. The synthesis has been carried out under mild conditions with all the commonly used urethane protected (Fmoc, Boc and Z) amino acids and the desired azides/triazoles were obtained in good yields. Incorporation of these triazole amino acids into small peptides generating dipeptidomimetics containing β-keto triazole units has also been demonstrated.
Highly Stereoselective Synthesis of <i>an</i><i>ti</i>-N-Protected-α-Amino Epoxides
作者:Robert V. Hoffman、Warren S. Weiner、Najib Maslouh
DOI:10.1021/jo010319h
日期:2001.8.1
A simple and efficient method for the synthesis of anti-N-protected amino epoxides from carbamate-protected amino acids is described. The two key steps are the monobromination of a beta -ketoester and chelation-controlled reduction of a bromomethyl ketone intermediate. Good overall yields, high diastereoselectivity, and excellent functional group compatibility are characteristic.