Zobrazeno 1 - 10
of 61
pro vyhledávání: '"Guy Boussard"'
Autor:
Pietrzyński G, Barbara Rzeszotarska, Zbigniew Kubica, Marek Lisowski, Guy Boussard, Ciszak. E.
Publikováno v:
International Journal of Peptide and Protein Research. 48:347-356
The crystal structure and solution conformation of Ac-Pro-deltaAla-NHCH3 and the solution conformation of Ac-Pro-(E)-deltaAbu-NHCH3 were investigated by X-ray diffraction method and NMR, FTIR and CD spectroscopies. Ac-Pro-deltaAla-NHCH3 adopts an ext
Publikováno v:
International Journal of Peptide and Protein Research. 32:175-182
The crystal structures of two tripeptides related to the sequence coding for N-glycosylation of peptides have been solved: Boc-Asn(Me)-Ala-Ser-OMe, 1, and Boc-Asn(Me)-Pro-Ser-NHMe, 2. Both molecules contain an “Asx-turn” characterized by a hydrog
Publikováno v:
The Journal of Peptide Research. 50:372-381
To determine the structural perturbations induced by the C alpha H-->N alpha exchange in aza-peptides, we have examined by 1H NMR and IR spectroscopy various derivatives of the aza-analogues of alanine, aspartic acid and asparagine in different organ
Publikováno v:
International Journal of Peptide and Protein Research. 37:39-45
The crystal structure of the tBuCO-D,L-Ala-delta Z-Phe-NHiPr dipeptide has been solved by X-ray diffraction. The peptide crystallizes in monoclinic space group P2(1)/c with a = 13.445 (3) A, b = 35.088 (4) A, c = 14.755 (3) A, beta = 116.73 (1) degre
Publikováno v:
International Journal of Peptide and Protein Research. 28:508-517
Publikováno v:
International Journal of Peptide and Protein Research. 18:195-202
The model tripeptide tBuCO-L-Pro-Me-D-Ala-MHMe crystallizes in both anhydrous (1) and monohydrated (2) states: 1, monoclinic space group C2 with a = 20.030 (2) A, b = 5.836 (2) A, c = 14.958 (3) A and beta = 94.11 (1) degrees; 2, orthorhombic space g
Publikováno v:
Tetrahedron Letters. 42:5009-5012
The aza-tripeptide Boc-Ala-AzPip-Ala-NHiPr (AzPip: 2-aza pipecolyl residue) was synthesized in seven steps using preferentially the diisopropylcarbodiimide/1-hydroxy-7-aza-benzotriazole (DIPCDI/AtOH) coupling method and via the Boc-AzPip-OBzl pivotal
Publikováno v:
International Journal of Peptide and Protein Research. 38:603-605
Crystalline ButCO-Pro-AzaAla-NHPri, prepared by the active ester procedure, has been subjected to single-crystal X-ray diffraction analysis which evidences a type II β-turn.
Autor:
Benoit Soudan, Michel Marraud, Alain Bac, Daniel Tetaert, Pierre Degand, Guy Boussard, Katell Rivoal, Manh Thong Cung
Publikováno v:
Letters in Peptide Science. 4:251-258
Consequences inherent to the substitution of aza-proline (AzPro) for proline in the octapeptide TTSAPTTS, representative of the tandem repeat motif present in the peptide backbone of MUC5AC mucin, were analysed in terms of conformational perturbation
Publikováno v:
Tetrahedron Letters. 37:183-186
One possible α-modification in peptides is the substitution of a nitrogen for the CαH group. We propose triphosgene as a carbonylating agent for coupling the properly substituted hydrazide to the proline nitrogen to obtain the AzAsx-Pro or AzAla-Pr