Publication: Synthesis of Aib- and Phe(2Me)-Containing Cyclopentapeptides
Synthesis of Aib- and Phe(2Me)-Containing Cyclopentapeptides
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Arnhold, F. S., Linden, A., & Heimgartner, H. (2015). Synthesis of Aib- and Phe(2Me)-Containing Cyclopentapeptides. Helvetica Chimica Acta, 98(2), 155–178. https://doi.org/10.1002/hlca.201400323
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Some recently described pentapeptides containing the alpha,alpha-disubstituted alpha-amino acids Aib and Phe(2Me) have been cyclized in DMF solution using diphenyl phosphorazidate (DPPA), O-(1H-benzotriazol-1-yl)-N,N,N’,N’-tetamethyluronium tetrafluoroborate/1-hydroxybenzotriazole (TBTU/HOBt), and diethyl phosphorocyanidate (DEPC), respectively, to give the corresponding cyclopentapeptides in fair-to-good yields. In the case of peptides with L-amino acids, and (R)- and (S)-Phe(2Me), the yields differed significantly in favor of the L/
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Arnhold, F. S., Linden, A., & Heimgartner, H. (2015). Synthesis of Aib- and Phe(2Me)-Containing Cyclopentapeptides. Helvetica Chimica Acta, 98(2), 155–178. https://doi.org/10.1002/hlca.201400323