196601-68-0Relevant articles and documents
Application of Methyl Bisphosphine-Ligated Palladium Complexes for Low Pressure N-11C-Acetylation of Peptides
Andersen, Thomas L.,Nordeman, Patrik,Christoffersen, Heidi F.,Audrain, Hélène,Antoni, Gunnar,Skrydstrup, Troels
, p. 4549 - 4553 (2017/04/13)
A mild and effective method is described for 11C-labeling of peptides selectively at the N-terminal nitrogen or at internal lysine positions. The presented method relies on the use of specific biphosphine palladium–methyl complexes and their high reactivity towards amino-carbonylation of amine groups in the presence [11C]carbon monoxide. The protocol facilitates the production of native N-11C-acetylated peptides, without any structural modifications and has been applied to a selection of bioactive peptides.
PROCESS FOR PREPARING (R)-2-ACETAMIDO-N-BENZYL-3-METHOXY-PROPIONAMIDE
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, (2011/09/15)
Processes for preparing and purifying (R)-2-acetamido-N-benzyl-3-methoxy- propionamide of formula-1 and intermediates thereof are provided.
Design and evaluation of affinity labels of functionalized amino acid anticonvulsants
LeTiran, Arnaud,Stables, James P.,Kohn, Harold
, p. 4762 - 4773 (2007/10/03)
Studies have shown that functionalized amino acids (FAA) exhibit outstanding activity in the maximal electroshock-induced seizure (MES) test in rodents. Affinity labels patterned in part after the potent antiepileptic (R)-N-benzyl-2-acetamido-3-methoxypropionamide ((R)-2) have been prepared as mechanistic probes to learn the pharmacological basis for FAA function. The chemical reactivity of the affinity labels with nucleophiles was assessed, and the labels were evaluated in in vitro radioligand assays and in the MES tests in rodents. The affinity labels did not bind to receptors known to effect seizure spread. Three affinity labels, (R,S)-N-benzyl-2-acetamido-6-isothiocyanatohexanamide ((R,S)-5), (R)-N-(4-isothiocyanatobenzyl)-2-acetamido-3-methoxypropionamide ((R)-6), and (R)-N-(3-isothiocyanatobenzyl)-2-acetamido-3-methoxy-propionamide ((R)-7), possessed excellent in vivo anticonvulsant activity and exhibited maximal activity at later time periods than typically observed for FAA. The anticonvulsant activity of 6 and 7 resided primarily in the (R)-enantiomer and the activity of (R)-6 and (R)-7 in rats (po) exceeded that of phenytoin. The chemical properties, pharmacological profile, and marked stereospecificity associated with 6 and 7 anticonvulsant activity make these compounds useful pharmacological tools for the study of the mode of action of FAA.