Solvent-free synthesis of hydrazones and their subsequent N-alkylation in a Ball-mill
摘要:
A large variety of Boc-, Bz-, Ts-, and Fmoc- protected hydrazones were prepared via condensation of an equimolar amount of carbonyl-compound and the corresponding hydrazine using a ball-mill. Hydrazones were always obtained in a quantitative yield and no solvents were used at any step. In a second step, we realized the first solvent-free N-allylation and N-benzylation of these hydrazones. (C) 2011 Elsevier Ltd. All rights reserved.
A large variety of Boc-, Bz-, Ts-, and Fmoc- protected hydrazones were prepared via condensation of an equimolar amount of carbonyl-compound and the corresponding hydrazine using a ball-mill. Hydrazones were always obtained in a quantitative yield and no solvents were used at any step. In a second step, we realized the first solvent-free N-allylation and N-benzylation of these hydrazones. (C) 2011 Elsevier Ltd. All rights reserved.
Novel Azapeptide Inhibitors of Hepatitis C Virus Serine Protease
作者:Murray D. Bailey、Ted Halmos、Nathalie Goudreau、Ewen Lescop、Montse Llinàs-Brunet
DOI:10.1021/jm049864b
日期:2004.7.1
studies, we have shown that this series of inhibitors bind in a noncovalent competitive fashion to the NS3 protease active site. The bound conformation of one of these new azapeptide-based inhibitors was determined using the transfer NOE technique. Incorporation of these new aza-amino acyl functionalities in the P1 position provided a handle to probe for new interactions in the S' region of the enzyme