Enantiopure alkaloid analogues and iminosugars from proline derivatives: stereocontrol in sequential processes
作者:Alicia Boto、Dácil Hernández、Rosendo Hernández
DOI:10.1016/j.tetlet.2009.04.082
日期:2009.7
use of expensive auxiliaries or catalysts in the synthesis of chiral 2-substituted pyrrolidines is described. Thus, commercial, cheap 4-(S)-hydroxyproline was readily transformed into optically pure pyrrolidines, using a one-pot decarboxylation–alkylation reaction as the key step. In this reaction, an acyliminium intermediate was generated, which was trapped by carbonnucleophiles. As postulated by
“Doubly Customizable” Unit for the Generation of Structural Diversity: From Pure Enantiomeric Amines to Peptide Derivatives
作者:Dacil Hernández、Carmen Carro、Alicia Boto
DOI:10.1021/acs.joc.0c02751
日期:2021.2.5
for the generation of libraries of structurally diverse compounds. Hyp can be cleaved at two points, followed by the introduction of new functionalities. In the first cycle, the removal and replacement of the carboxylic group are carried out, followed (second cycle) by the scission of the 4,5-position and manipulation of the resulting chains. In this way, three new chains are generated and can be transformed