Novel and facile solution-phase synthesis of 2,5-diketopiperazines and O-glycosylated analogs

被引:16
作者
Campo, Vanessa L. [1 ]
Martins, Maristela B. [1 ]
da Silva, Carlos H. T. P. [1 ]
Carvalho, Ivone [1 ]
机构
[1] Univ Sao Paulo, Fac Ciencias Farmaceut Ribeirao Preto, BR-14040930 Ribeirao Preto, Brazil
基金
巴西圣保罗研究基金会;
关键词
Diketopiperazine; Dipeptide cyclization; Glycosylated amino acid; Solution-phase synthesis; COMBINATORIAL CHEMISTRY; BIOLOGICAL-ACTIVITY; BUILDING-BLOCKS; SMALL MOLECULES; AMINO ACIDS; DIKETOPIPERAZINES; ESTERS; DIMERIZATION; STRATEGY; PEPTIDE;
D O I
10.1016/j.tet.2009.04.069
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
This work describes the synthesis in Solution of a series of related diketopiperazines with potential biological activities: cyclo(L-Pro-L-Ser), cyclo(L-Phe-L-Ser), cyclo(D-Phe-L-Ser) and the corresponding glycosylated analogs of the latter, cyclo[D-Phe-L-Ser(alpha GlcNAc)] and cyclo[D-Phe-L-Ser(beta GlcNAc)]. The synthetic approach involved coupling reactions of -OH or O-glycosylated serine benzyl esters with NFmoc-protected amino acids (Pro or Phe), followed by one-pot deprotection-cyclization reaction in the presence of 20% piperidine in DMF. (C) 2009 Elsevier Ltd. All rights reserved.
引用
收藏
页码:5343 / 5349
页数:7
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