1190131-60-2Relevant academic research and scientific papers
Stereospecific synthesis of ss3-amino acid derivatives from propargylic alcohols: Efficient solution-phase synthesis of oligopeptides without coupling agents
Temperini, Andrea,Terlizzi, Raffaella,Testaferri, Lorenzo,Tiecco, Marcello
, p. 7883 - 7895 (2009)
A stereospecific synthesis of ss3-amino acids has been accomplished starting from readily available and enantioenriched propargylic alcohols. This conversion can be effected in only three steps by selenium-mediated organic transformations of th
A reasonably stereospecific multistep conversion of Boc-protected α-amino acids to Phth-protected β3-amino acids
Temperini, Andrea,Capperucci, Antonella,Degl'Innocenti, Alessandro,Terlizzi, Raffaella,Tiecco, Marcello
supporting information; experimental part, p. 4121 - 4124 (2010/08/20)
A method for the synthesis of β3-amino acids starting from α-amino acids is described. This conversion can be effected by an eight-step procedure which involves the transformation of the carboxylic group into an alkyne followed by a selenium-mediated conversion of the carbon-carbon triple bond to a Se-phenyl selenocarboxylate intermediate. The reactive Se-phenyl selenocarboxylate intermediates can be trapped with water, alcohols or the amine of an amino acid derivative to give β3-amino acids, β3-amino esters or mixed peptides, respectively. The whole transformations of the carboxylic group into an alkyne and of the alkyne group into β3-amino acids may not require purification of the intermediate products but a work-up and isolation procedure of crude materials.
