Allyltrichlorostannane Additions to α-Amino Aldehydes: Application to the Total Synthesis of the Aspartyl Protease Inhibitors<scp>l</scp>-682,679,<scp>l</scp>-684,414,<scp>l</scp>-685,434, and<scp>l</scp>-685,458
作者:Luiz C. Dias、Gaspar Diaz、Andrea A. Ferreira、Paulo R. Meira、Edílson Ferreira
DOI:10.1055/s-2003-37649
日期:——
The hydroxyethylene dipeptide isosteres l-682,679, l-684,414, l-685,434, and l-685,458 were synthesized in a few steps by a sequence involving an allyltrichlorostannane coupling with an α-amino aldehyde, followed by hydroboration of the corresponding 1,2-syn and 1,2-anti amino alcohols to give the diols, lactonization under TPAP conditions, lactone opening, and peptide coupling with the desired amine or dipeptide amide. The present synthetic approach represents a practical entry to a large range of other dipeptide isosteres.
羟基亚乙基二肽等排体l-682,679、l-684,414、l-685,434和l-685,458通过一系列步骤合成,包括与α-氨基醛的烯丙基三氯锡烷偶联、相应的1,2-顺式和1,2-反式氨基醇的氢硼化反应生成二醇、在TPAP条件下内酯化、内酯开环以及与所需胺或二肽酰胺的肽偶联。这种合成方法为其他大量二肽等排体的制备提供了一条实用的途径。