Results 201 to 210 of about 155,970 (214)

Thermotropic polypeptides. 2. Molecular packing and thermotropic behavior of poly(L-glutamates) with long n-alkyl side chains

, 1985
Viscoelasticite, diffractometrie RX, calorimetrie differentielle et dispersion optique rotatoire de polymeres avec 5, 6, 8 ,10, 12, 14, 16 et 18 atomes de carbone dans la chaine ...
J. Watanabe, H. Ono, I. Uematsu, A. Abe
semanticscholar   +1 more source

Synthesis of Optically Pure 3,4-Disubstituted l-Glutamates from a Novel 2,3-Aziridino-γ-lactone 4-Carboxylate Derivative

, 1996
The synthesis of the N-acetyl and N-Cbz derivatives of (1S,4S,5R)-4-(methoxycarbonyl)-3-oxa-6-azabicyclo[3.1.0]hexan-2-one (24 and 27, respectively) from d-ribose is described.
P. Dauban, A. Chiaroni, C. Riche, R. Dodd   +3 more
semanticscholar   +1 more source

The preparation of substituted ?-Benzyl-L-glutamates and -Benzyl-L-aspartates

, 1965
Substituted γ-benzyl-L-glutamates and β-benzyl-L-aspartates have been obtained from the alkali metal salts of the corresponding amino acid copper complexes and substituted benzyl halides under various experimental conditions.
R. Ledger, F. Stewart
semanticscholar   +1 more source

CALCIUM CONTENT AND EXCHANGE IN NEOCORTICAL TISSUES DURING THE CATION MOVEMENTS INDUCED BY GLUTAMATES

Journal of Neurochemistry, 1970
— 1 Guinea pig neocortical tissues incubated in glucose‐bicarbonate media reached stable calcium contents of 2 μat./g of which 0‐35 μat.Ca/g was in a space accessible to inulin.
R. L. Ramsey, H. McIlwain
semanticscholar   +1 more source

Poly(γ‐alkyl glutamates). I

, 1966
Good yields of some crystalline γ-alkyl esters of L-glutamic acid were obtained by carrying out the esterfication with a small (20–50 mole-%) excess of alcohol in aqueous hydrochloric acid or 60–80% sulfuric acid followed by neutralization with an ...
S. Sugai, K. Kamashima, S. Makino, J. Noguchi   +3 more
semanticscholar   +1 more source

Conformational analyses of polyoxyethylene‐bound homo‐oligo‐L‐glutamates in a helix‐supporting environment, trifluoroethanol

Biopolymers, 1985
A detailed conformational analysis of C‐terminal polyoxyethylene‐bound homo‐oligo‐L‐glutamates (dimer, penta‐heptamer) with N‐terminal blocking groups, X = Boc, Ac, or pGlu, was carried out in the helix‐supporting environment, trifluorethanol, using 1H ...
A. Ribeiro, R. Saltman, M. Goodman
semanticscholar   +1 more source

Efficient Stereoselective Syntheses of Constrained Glutamates via Michael-Induced Ring Closing Reactions†

, 2008
Zn-chelated glycine ester enolates are highly efficient nucleophiles for the synthesis of conformationally constrained glutamates via domino sequences of Michael additions and subsequent ring closures (MIRC).
C. Schmidt, U. Kazmaier
semanticscholar   +1 more source

Syntheses of poly[γ‐(l)‐menthyl L‐ and D‐glutamates] and their secondary structures

, 1970
γ‐(l)‐Menthyl L‐ and D‐glutamates were prepared by a fusion reaction of N‐phthalyl‐L‐ and D‐glutamic anhydrides with l‐menthol, followed by hydrazinolysis. The monomers were polymerized to poly[γ‐(l)‐menthyl L‐ and D‐glutamates] by the N‐carboxyanhydride
Hiroyuki Yamamoto, Y. Kondo, T. Hayakawa
semanticscholar   +1 more source

Homopolypeptides derived from substituted β-Benzyl-L-aspartates and γ-Benzyl-L-glutamates

, 1966
Homopolypeptides have been obtained by polymerization of the N-carboxy anhydrides of various substituted β-benzyl-L-aspartates and γ-benzyl-L- glutamates.
R. Ledger, F. Stewart
semanticscholar   +1 more source

Convenient Preparation of α-Tert-Butyl N-Blocked Glutamates Through γ-Allyl Ester Protection

, 1995
Utilisation of γ-allyl ester protection of glutamates provides a convenient route to the synthesis of Z-Glu-OBut, Tr-Glu-OBut and (Boc)2-Glu-OBut.
V. Bavetsias, G. Bisset, M. Jarman
semanticscholar   +1 more source