Результаты исследований: Научные публикации в периодических изданиях › статья
An efficient synthesis of a novel analog of octreotide with an unnatural L-lysine-like tetrazolyl amino acid. / Popova, E.A.; Nikolskaia, S.K.; Gluzdikov, I.A.; Trifonov, R.E.
в: Tetrahedron Letters, Том 55, № 36, 2014, стр. 5041-5046.Результаты исследований: Научные публикации в периодических изданиях › статья
}
TY - JOUR
T1 - An efficient synthesis of a novel analog of octreotide with an unnatural L-lysine-like tetrazolyl amino acid
AU - Popova, E.A.
AU - Nikolskaia, S.K.
AU - Gluzdikov, I.A.
AU - Trifonov, R.E.
PY - 2014
Y1 - 2014
N2 - A new cyclic octreotide-like octapeptide was prepared by incorporation of an unnatural tetrazolyl amino acid, an analog of Fmoc-L-lysine, into the peptide chain. The new tetrazolyl amino acid, (S)-2-{[2-(9H-fluoren- 9-yl)acetoxy]amino}-6-(1H-tetrazol-1-yl)hexanoic acid, was obtained by azidation of Fmoc-L-lysine trifluoroacetate with sodium azide in the presence of triethyl orthoformate in glacial acetic acid. The linear peptide sequence was prepared using efficient Fmoc/t-Bu solid-phase peptide synthesis (SPPS). Cyclization of the octapeptide was carried out via oxidation with iodine. The structure and purity of the cyclic octapeptide were confirmed by LC–MS, MALDI-TOF MS/MS analysis as well as 1D/2D 1H and 13C NMR spectroscopy.
AB - A new cyclic octreotide-like octapeptide was prepared by incorporation of an unnatural tetrazolyl amino acid, an analog of Fmoc-L-lysine, into the peptide chain. The new tetrazolyl amino acid, (S)-2-{[2-(9H-fluoren- 9-yl)acetoxy]amino}-6-(1H-tetrazol-1-yl)hexanoic acid, was obtained by azidation of Fmoc-L-lysine trifluoroacetate with sodium azide in the presence of triethyl orthoformate in glacial acetic acid. The linear peptide sequence was prepared using efficient Fmoc/t-Bu solid-phase peptide synthesis (SPPS). Cyclization of the octapeptide was carried out via oxidation with iodine. The structure and purity of the cyclic octapeptide were confirmed by LC–MS, MALDI-TOF MS/MS analysis as well as 1D/2D 1H and 13C NMR spectroscopy.
KW - Unnatural amino acid 1H-Tetrazole L-Lysine Cyclic peptides Somatostatin analogs
U2 - 10.1016/j.tetlet.2014.07.067
DO - 10.1016/j.tetlet.2014.07.067
M3 - Article
VL - 55
SP - 5041
EP - 5046
JO - Tetrahedron Letters
JF - Tetrahedron Letters
SN - 0040-4039
IS - 36
ER -
ID: 5710391