Search Results - "VIALLEFONT, P"

Urethane N-Carboxyanhydrides from β-Amino Acids by McKiernan, Mary, Huck, Jacques, Fehrentz, Jean-Alain, Roumestant, Marie-Louise, Viallefont, Philippe, Martinez, Jean

“…A general method has been developed for the synthesis of N-tert-butyloxycarbonyl N-carboxyanhydrides from β-amino acids using Vilsmeier complex. These β-UNCA…”
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Synthesis of new alpha-heterocyclic alpha-aminoesters by Bentama, A, El Hadrami, E M, El Hallaoui, A, Elachqar, A, Lavergne, J-P, Roumestant, M-L, Viallefont, Ph

“…alpha-Heterocyclic alpha-aminoesters were obtained in good yields by reaction of a glycine cation equivalent and different heterocyclic nucleophiles;…”
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Pyrrolidinopiperazinedione as chiral auxiliary and its use in asymmetric Mannich synthesis by Guenoun, F., Zair, T., Lamaty, F., Pierrot, M., Lazaro, R., Viallefont, P.

“…Functionalised diketopiperazines (DKPs) are easily obtained optically pure by disymmetrization of a mesopyrrolidine and can be easily converted to an α-amino…”
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Synthesis and biological activity of glutamic acid derivatives by Receveur, Jean-Marie, Guiramand, Janique, Récasens, Max, Roumestant, Marie-Louise, Viallefont, Philippe, Martinez, Jean

“…In order to develop new specific glutamate analogues at metabotropic glutamate receptors, Diels-Alder, 1–4 ionic and radical reactions were performed starting…”
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Detection of enzyme activity at trace levels: A new perspective for the direct screening of active catalytic antibodies by Hua, T.D., Rolland-Fulcrand, V., Lazaro, R., Viallefont, P., Lefranc, M-P., Weill, M.

“…A very low level of enzyme activity (10−11 mol) has been detected using a PCR method following a vector hybridisation of a supported oligonucleotide. This…”
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Chemo-Enzymatic Synthesis of New Non Ionic Surfactants from Unprotected Carbohydrates by Boyat, C., Rolland-Fulcrand, V., Roumestant, M.-L., Viallefont, Ph, Martinez, J.

“…The synthesis of new non ionic surfactants is reported. They were prepared from unprotected carbohydrates, amino acids, and fatty alcohols. These modules were…”
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Enzymatic peptide synthesis by new supported biocatalysts by Rolland-Fulcrand, V, May, N, Viallefont, P, Lazaro, R

“…It is well known that proteases can be successfully used for peptide synthesis in aqueous medium or in water-containing organic solvents. Copolymerized of…”
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(3R,2'S)-2'-N-Dibenzylamino-1,2:5,6-di-O-isopropylidène-α-d-allofuranose-3-spiro-3'-β-propiolactone by Chiaroni, A., Riche, C., Bouifraden, S., Lavergne, J.-P., Viallefont, P.

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Sulfenylation of chiral Schiff bases by Bentama, A, Hoarau, S, Pappalardo, L, Roumestant, M L, Viallefont, P

“…The purpose of this study was to examine the conditions of sulfenylation reactions of chiralα-amino esters Schiff bases to protect the chirality in…”
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New antitumoral cyclopeptides by Bernardi, E, Fauchère, J L, Atassi, G, Viallefont, P, Lazaro, R

“…Chlamydocin is a powerfulin vitro antitumoral agent, quickly inactivatedin vivo. A series of cyclic tetrapeptides related to chlamydocin or HC toxin and…”
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Specific recognition of a tetrahedral phosphonamidate transition state analogue group by a recombinant antibody Fab fragment by Hua, T D, Lamaty, F, Souriau, C, Rolland-Fulcrand, V, Lazaro, R, Viallefont, P, Lefranc, M P, Weill, M

“…In order to obtain antibodies able to catalyse a peptide synthesis, a naive combinatorial library of human Fab antibody fragments was screened with the…”
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Diastereoselective radical addition to dehydroalanine derivatives of pantolactone by Yim, Anne-Marie, Vidal, Yves, Viallefont, Philippe, Martinez, Jean

“…The diastereoselective synthesis of α-amino acids by radical addition to dehydroalanine derivatives of pantolactone using the stannane method both in the…”
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Synthesis of HC toxin and related cyclopeptides containing the (L-Ala-D-Ala-L-Ada-D-Pro) sequence by Jacquier, R, Lazaro, R, Raniriseheno, H, Viallefont, P

“…In studies leading to HC toxin synthesis, a phytotoxic cyclic tetrapeptide with the sequence cyclo (L-Ala-D-Ala-L-Aoe-D-Pro), we have determined optimal…”
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Rapid solid phase synthesis of α-amino acids by Barbaste, Mireille, Rolland-Fulcrand, Valérie, Roumestant, Marie-Louise, Viallefont, Philippe, Martinez, Jean

“…A solid phase synthetic method for amino acids is developed. The N-acetyl-dehydroalanine is quatitatively bound to Wang resin by the Mitsunobu method. Then a…”
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Synthesis of New Seven-Membered Ring Cyclic Dipeptides From Functionalized β-Amino Acids by El Mahdi, Ouafâa, Lavergne, Jean-Pierre, Martinez, Jean, Viallefont, Philippe, Essassi, E. M., Riche, C.

“…A short synthesis of new, functionalized seven‐membered ring cyclic dipeptides is described. After the coupling of N‐protected β‐amino acids to N‐substituted…”
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Synthesis of enantiomerically pure (2R, 5S)- and (2R, 5R)-5-hydroxypipecolic acid from glycinate Schiff bases by Hoarau, Sylvie, Fauchère, Jean Luc, Pappalardo, Louis, Roumestant, Marie Louise, Viallefont, Philippe

“…An asymmetric synthesis of cis- and trans- 5-hydroxy-(D)-pipecolic acid, starting from glycinate Schiff bases is described. The approach involves the…”
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REGIOSELECTIVE REACTION OF UNPROTECTED SUGARS WITH URETHANE N-CARBOXYANHYDRIDES FOR THE SYNTHESIS OF NEW SURFACTANTS by Bellhaouel, Salima, Roumestant, Marie-Louise, Viallefont, Philippe, Martinez, Jean

“…Reaction of urethane N-carboxyanhydrides with unprotected amino sugars was the key step in the synthesis of new trimodular surfactants…”
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Some of the amino acid chemistry going on in the Laboratory of Amino Acids, Peptides and Proteins by Bouifraden, S, Drouot, C, el Hadrami, M, Guenoun, F, Lecointe, L, Mai, N, Paris, M, Pothion, C, Sadoune, M, Sauvagnat, B, Amblard, M, Aubagnac, J L, Calmes, M, Chevallet, P, Daunis, J, Enjalbal, C, Fehrentz, J A, Lamaty, F, Lavergne, J P, Lazaro, R, Rolland, V, Roumestant, M L, Viallefont, P, Vidal, Y, Martinez, J

“…Some of the chemistry of amino acids going on in our laboratory (Laboratoire des Amino acides Peptides et Protéines) is described as well as some mass…”
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Chemoenzymatic synthesis of the two enantiomers of 7-azatryptophan by Lecointe, L, Rolland-Fulcrand, V, Roumestant, M.L, Viallefont, Ph, Martinez, J

“…7-Azatryptophan is an unnatural α-amino acid with a very potent fluorescent activity. It is used as a vehicle for probing the structure and dynamics of…”
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Asymmetric synthesis of (2 S,3 R,4 R)-ethoxycarbonylcyclopropyl phosphonoglycine by Hannour, Samir, Roumestant, Marie-Louise, Viallefont, Philippe, Riche, Claude, Martinez, Jean, El Hallaoui, Abdellilah, Ouazzani, Fouad

“…The synthesis of enantiomerically pure (2 S,3 R,4 R)-ethoxycarbonylcyclopropyl phosphonoglycine is described, the key-step involving 1,4-addition of a chiral…”
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