Zobrazeno 1 - 10
of 130
pro vyhledávání: '"M. L. Roumestant"'
Publikováno v:
Bulletin des Sociétés Chimiques Belges. 103:1-8
In this report the importance of heterocycles in amino acid and peptide chemistry is pointed out. Neuroexcitatory amino acids, kainic acid, quisqualic acid, of which new syntheses are given, are representative examples of the role of the heterocycle
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::97e268eb05c0975328c88412ab5d56ac
https://doi.org/10.1002/bscb.19941030102
https://doi.org/10.1002/bscb.19941030102
Publikováno v:
Tetrahedron: Asymmetry. 15:851-858
Several new 4-substituted glutamic acid derivatives are described: 4-phosphinomethyl glutamic acid derivatives were prepared starting from (2 S )- N -Boc- tert -butyl-4-methylene glutamate. The 4-carboxymethyl and 4-aminomethyl glutamic acid derivati
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c2ac47fe1401175eb6f952598c7e87ac
https://doi.org/10.1016/j.tetasy.2004.01.006
https://doi.org/10.1016/j.tetasy.2004.01.006
Autor:
Jean-Pierre Lavergne, M. L. Roumestant, Abdelrhani Elachqar, A. Ben-Tama, El Mestafa El Hadrami, A. El Hallaoui, Ph. Viallefont
Publikováno v:
Amino Acids. 24:423-426
α-Heterocyclic α-aminoesters were obtained in good yields by reaction of a glycine cation equivalent and different heterocyclic nucleophiles; diastereoselectivity using a carbohydrate (galactopyranose) as N-protecting group was modest.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5032d601285a92f65923c6619dfba78b
https://doi.org/10.1007/s00726-002-0323-7
https://doi.org/10.1007/s00726-002-0323-7
Publikováno v:
Tetrahedron: Asymmetry. 14:1123-1126
A short four-step synthesis of (2S,3R)- and (2S,3S)-3-methyl glutamic acids is reported; the (2S,3R) isomer presented a significant inhibitory effect on glutamate transport.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f7edf937b0d21329abbcc667a550c593
https://doi.org/10.1016/s0957-4166(03)00127-7
https://doi.org/10.1016/s0957-4166(03)00127-7
Publikováno v:
Synthesis. :2165-2168
The Michael addition of secondary cyclic aromatic and nonaromatic amines to methyl 2-{[(tert-butoxycarbonyl)amino]methyl)acrylate afforded substituted β 2 -amino esters in good to excellent yields.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e68dee9a0508c5caf12a44077b81bcf3
https://doi.org/10.1055/s-2003-42084
https://doi.org/10.1055/s-2003-42084
Autor:
Jean Martinez, M. L. Roumestant, Valérie Rolland, Mohamad Tabcheh, Marc Rolland, Tarek Kassem, Johny Wehbe
Publikováno v:
Org. Biomol. Chem.. 1:1938-1942
A short asymmetric synthesis of optically pure beta-substituted beta-hydroxy aspartates is described. The key step is an aldol reaction between a glycine enolate derived from an oxazinone intermediate used as chiral auxiliary and various alpha-keto e
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d3765fe023737ebf2ec492e737c0cb2a
https://doi.org/10.1039/b212538b
https://doi.org/10.1039/b212538b
Publikováno v:
Synthetic Communications. 32:181-187
Reaction of urethane N-carboxyanhydrides with unprotected amino sugars was the key step in the synthesis of new trimodular surfactants.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cc2f077688e38a6c1ec862cbc32c9304
https://doi.org/10.1081/scc-120002000
https://doi.org/10.1081/scc-120002000
Autor:
Marc Rolland, Valérie Rolland-Fulcrand, Jean Martinez, M. L. Roumestant, Jonhy Wehbe, Tarek Kassem
Publikováno v:
Tetrahedron: Asymmetry. 12:2657-2661
A short four-step synthesis of (3R,4R,5R)-4-hydroxyisoleucine lactone with total control of stereochemistry is reported, the key intermediate being the didehydroamino acid derivative arising from an aldol dehydration reaction between a glycine anion
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::38b1d4c5d0b9be71fb0f514e5864a5cf
https://doi.org/10.1016/s0957-4166(01)00465-7
https://doi.org/10.1016/s0957-4166(01)00465-7
Publikováno v:
Preparative Biochemistry and Biotechnology. 31:71-80
The chemoenzymatic synthesis of new surfactants is reported; they were prepared from unprotected carbohydrates, amino acids, and fatty acids. This study pointed out the factors that govern the possibility to enzymatically bind the carbohydrate to the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::86587d8579b8e2582da0e42c92f920ff
https://doi.org/10.1081/pb-100103373
https://doi.org/10.1081/pb-100103373
Autor:
L. Lecointe, M. L. Roumestant, Valérie Rolland, Philippe Viallefont, J. Martine, L. Pappalardo
Publikováno v:
The Journal of Peptide Research. 55:300-307
The synthesis of enantiomerically pure azatyrosine, tribromophenylalanine and trichlorophenylalanine is described, using two methods, diastereoselective alkylation and (or) diastereoselective protonation of chiral enolates.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7e04c9a707ca9b0ff976226a1f53782d
https://doi.org/10.1034/j.1399-3011.2000.00681.x
https://doi.org/10.1034/j.1399-3011.2000.00681.x