Catalytic Acylation of Amines with Aldehydes or Aldoximes
摘要:
The simple nickel salt NiCl2 center dot 6H(2)O catalyzes the coupling of aldoximes with amines to give secondary or tertiary amide products. The aldoxime can be prepared in situ from the corresponding aldehyde. The use of O-18-labeled oximes has allowed insight into the mechanism of this reaction.
Rapamycin peptides conjugates: synthesis and uses thereof
申请人:Sharma K. Sanjay
公开号:US20070129394A1
公开(公告)日:2007-06-07
The present invention relates to new rapamycin derivatives for the inhibition of cell proliferation. The compounds can advantageously target two proteins in dividing cells and interfere with cell cycle. There is thus provided derivatives of rapamycin in which the 42 position of rapamycin is linked to an amino acid or a peptide through a carbamate ester linkage. These rapamycin derivatives can be synthesized by reacting 42-O-(4-Nitrophenoxycarbonyl) rapamycin and an amino acid or a free amino peptide under basic conditions. These rapamycin derivatives can be used to inhibit the cell cycle and are therefore useful for treating cell proliferation disorders.
Catalytic Acylation of Amines with Aldehydes or Aldoximes
作者:C. Liana Allen、Simge Davulcu、Jonathan M. J. Williams
DOI:10.1021/ol101978h
日期:2010.11.19
The simple nickel salt NiCl2 center dot 6H(2)O catalyzes the coupling of aldoximes with amines to give secondary or tertiary amide products. The aldoxime can be prepared in situ from the corresponding aldehyde. The use of O-18-labeled oximes has allowed insight into the mechanism of this reaction.