Synthesis of Penta-<i>N</i>-Protected Homocaldopentamine and Its Selective Acylation
作者:Jae Kyoung Pak、Manfred Hesse
DOI:10.1021/jo980689e
日期:1998.11.1
The synthesis of the penta-N-protected polyamine homocaldopentamine PA 4333, 1, tert-butyl N-[9-allyl-16-azido-13-(2,2,2-trichloro-tert-butoxycarbonyl)-5-(trimethylsilylethylsulfonyl)-5,9,13-triazahexadec-1-yl]carbamate}, containing five independent amino-protecting groups is described. These five protecting groups used-allyl, azido, tert-butoxycarbonyl (BOC), 2,2,2-trichloro-tert-butoxycarbonyl (TCBOC), and trimethylsilylethylsulfonyl (SES)-were removed selectively. The acylation with p-methoxycinnamoyl chloride at each nitrogen of the pentaamine was determined.