Zobrazeno 1 - 10
of 35
pro vyhledávání: '"Jacques Taillades"'
Process improvement in amino acid N-carboxyanhydride synthesis by N-carbamoyl amino acid nitrosation
Publikováno v:
Amino Acids
Amino Acids, Springer Verlag, 2009, 36 (2), pp.341-347. ⟨10.1007/s00726-008-0090-1⟩
Amino Acids, Springer Verlag, 2009, 36 (2), pp.341-347. ⟨10.1007/s00726-008-0090-1⟩
Amino acid N-carboxyanhydrides (NCA), convenient monomer for polypeptide synthesis, are easily prepared in high purity as the result of N-carbamoyl amino acids (CAA) nitrosation by gaseous NOx (4:1 NO + O2 mixture, or NOCl) in toluene. Removal of pol
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7ee3885524bee0d37fcef914dc736316
https://doi.org/10.1007/s00726-008-0090-1
https://doi.org/10.1007/s00726-008-0090-1
Autor:
Laurent Boiteau, François Schué, Jacques Taillades, Auguste Commeyras, Olivia Giani, Olivier Lagrille, Hélène Collet, Willy Vayaboury
Publikováno v:
Polymer International. 51:1037-1040
While polypeptide materials present important application potentialities, the expense of amino acid N-carboxyanhydride (NCA) monomers strongly limits their applications. We present here a new, promising synthetic route to NCA through N-carbamoylamino
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e038e24079bcbbc781bb4cddbc271b11
https://doi.org/10.1002/pi.946
https://doi.org/10.1002/pi.946
Autor:
Franck Selsis, Hervé Martin, Laurent Boiteau, Louis Mion, Hélène Collet, Olivier Lagrille, Odile Vandenabeele-Trambouze, Jacques Taillades, Jean-Philippe Biron, Michel Dobrijevic, Auguste Commeyras, Raphaël Plasson, Hervé Cottet
Publikováno v:
Polymer International. 51:661-665
Addressing the still open question of the prebiotic origin of sequential macromolecules (peptides, nucleic acids) on the primitive Earth, we describe a molecular engine (the primary pump), which works at ambient temperature and continuously generates
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5e5ca038490b183662d8d525590c5f91
https://doi.org/10.1002/pi.1027
https://doi.org/10.1002/pi.1027
Autor:
Willy Vayaboury, Isabelle Beuzelin, Odile Vandenabeele-Trambouze, Jacques Taillades, Auguste Commeyras, Olivier Lagrille, Jean-Philippe Biron, Laurent Boiteau, Olivia Giani
Publikováno v:
Journal of the Chemical Society, Perkin Transactions 2. :1247-1254
Recent developments in peptide synthesis have underlined the importance of optimising, on a preparative scale, the N-carbamoylation of amino acids by aqueous cyanate. To this purpose, a theoretical model of aqueous cyanate reactivity was designed. Th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3ede00bcf1f3b454ac22cadae33f6a36
https://doi.org/10.1039/b005856o
https://doi.org/10.1039/b005856o
Publikováno v:
Tetrahedron Letters. 40:3355-3358
Treating solid monoalkylureas (including N-carbamoylpeptides) when hydrated by ca. 1 eq. water, by gaseous NOx (nitrogen peroxide or a mixture of nitric oxide and oxygen) in stoichiometric excess, deprotects quantitatively the amino function at room
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2adcb6a4c5b0171d1c8780fb3d23d781
https://doi.org/10.1016/s0040-4039(99)00326-3
https://doi.org/10.1016/s0040-4039(99)00326-3
Autor:
Catherine Bied, Jacques Taillades, Vlado Tabacik, Isabelle Beuzelin, Auguste Commeyras, Laurence Garrel
Publikováno v:
Origins of Life and Evolution of the Biosphere. 28:61-77
Our previous kinetic and thermodynamic studies upon the reactional system HCHO/HCN/ NH3 in aqueous solutions are completed. In the assumed prebiotic conditions of the primitive earth ([HCHO] and [HCN] near 1 g L−1, T = 25 °C, pH = 8, [NH3] very lo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::856e0d5fe27878d48ea5b5abf1a8200a
https://doi.org/10.1023/a:1006566810636
https://doi.org/10.1023/a:1006566810636
Publikováno v:
Tetrahedron Letters. 37:9043-9046
Nitrosation of chiral N-carbamoylaminoacids with a mixture of NO and O2 gives, with the same configuration and in quantitative yield the corresponding α-aminoacid-N-carboxyanhydrides (NCA), well known precursors of peptides. The by products of this
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::60f95f0d588ef77c12983f678d922fb3
https://doi.org/10.1016/s0040-4039(96)01974-0
https://doi.org/10.1016/s0040-4039(96)01974-0
Publikováno v:
Macromolecules. 29:4792-4795
Copolyoxamide copolymers precursors XCH 2 NHCOCONHCH 2 NHCOCONHCH 2 X (X= CONH 2 , COOH, CH 2 OH) have been synthesized by reaction of N,N'-methylenebis(4,5-oxazolidinedione) with an α-aminonitrile, an α-aminoacid and ethanolamine, respectively
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bc99f027ab0842a8cf02d88391194e20
https://doi.org/10.1021/ma951491o
https://doi.org/10.1021/ma951491o
Publikováno v:
J. Chem. Soc., Perkin Trans. 2. :1279-1285
The enantioselective hydration of α-aminonitriles 1, RCH(CN)NH2[1a: R = PhCH2; 1b: R = Pri; 1c: R = Ph] has been achieved in an alkaline hydroalcoholic medium in the presence of chiral ketonic catalysts. Of the different ketones used, (-)-(5R,3R,2R)
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c5822907781d7009c9a4af7331862a1c
https://doi.org/10.1039/p29920001279
https://doi.org/10.1039/p29920001279
Publikováno v:
European Journal of Organic Chemistry
European Journal of Organic Chemistry, Wiley-VCH Verlag, 2007, pp.662-668. ⟨10.1002/ejoc.200600294⟩
European Journal of Organic Chemistry, Wiley-VCH Verlag, 2007, pp.662-668. ⟨10.1002/ejoc.200600294⟩
The controlled, selective decomposition of dissymmetric iminodinitriles (DIDN) of formula RCH(CN)–NH–C(CN)R′R″ (considered as N-protected alpha-aminonitriles), is a critical issue for an original asymmetric Strecker strategy previously outlin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d56b36c161444b01c226295bf4492190
https://hal.archives-ouvertes.fr/hal-00135379
https://hal.archives-ouvertes.fr/hal-00135379
