Polypeptides. Part XII. The preparation of 2-pyridyl esters and their use in peptide synthesis
作者:A. S. Dutta、J. S. Morley
DOI:10.1039/j39710002896
日期:——
amino-acid derivatives, and hydroxy-compounds) than the corresponding p-nitrophenyl esters. Evidence is presented that they are likely to be particularly useful in solid-phase peptide synthesis, and in the synthesis of O-peptides and depsipeptides.
Filippi; Biondi; Filira, Farmaco, Edizione Scientifica, 1983, vol. 38, # 10, p. 713 - 724
作者:Filippi、Biondi、Filira、Rocchi
DOI:——
日期:——
Stereoselective syntheses of 1H-imidazo[2,1-a]isoindole-2,5(3H,9bH)-diones†
作者:Alan R. Katritzky、Yong-Jiang Xu、Hai-Ying He、Peter J. Steel
DOI:10.1039/b104060j
日期:——
1H-Imidazo[2,1-a]isoindole-2,5(3H,9bH)-diones 6a–i are synthesized in 67–96% yields with high stereoselectivities (de 88–99%, except 6e with a 58% de value) via intermolecular condensation of 2-formylbenzoic acid (5) and α-amino amides 4a–i in the presence of a catalytic amount of toluene-p-sulfonic acid. Intermediates 4 are obtained in two steps from easily available chiral N-Boc-α-amino acids 1.