84107-20-0Relevant articles and documents
Enzymatic synthesis of ω-carboxy-β-hydroxy-(l)-α-amino acids
Sagui, Francesca,Conti, Paola,Roda, Gabriella,Contestabile, Roberto,Riva, Sergio
, p. 5079 - 5084 (2008)
Commercially available ω-carboxy-aldehydes and glycine have been subjected to the catalytic action of an l-threonine aldolase from Escherichia coli to give the corresponding β-hydroxy-α-(l)-amino acids as a mixture of erythro/threo epimers. Specifically, the reaction with glyoxylic acid (2) gave the epimeric β-hydroxy-(l)-aspartates (t,e)-9 that could be isolated by ion-exchange chromatography in 67% yield. Following esterification and N-Boc protection, the two epimers could be isolated as pure compounds. Similarly, the aldolase-catalyzed addition of glycine to succinic semialdehyde (4) gave the expected mixture of β-hydroxy-l-α-aminoadipic acids (t)-12 and (e)-12 in 34% yield.
β-Indolyloxy Functionalized Aspartate Analogs as Inhibitors of the Excitatory Amino Acid Transporters (EAATs)
Liu, Na,Jensen, Anders A.,Bunch, Lennart
supporting information, p. 2212 - 2220 (2020/10/05)
The excitatory amino acid transporters (EAATs) mediate uptake of the major excitatory neurotransmitter l-glutamate (Glu). The essential functions governed by these transporters in regulating the central Glu level make them interesting therapeutic targets in a wide range of neurodegenerative and psychiatric disorders. l-Aspartate (Asp), another EAAT substrate, has served as a privileged scaffold for the development of EAAT inhibitors. In this study, we designed and synthesized the first β-indolyloxy Asp analogs 15a-d with the aim to probe a hitherto unexplored adjacent pocket to the substrate binding site. The pharmacological properties of 15a-d were characterized at hEAAT1-3 and rEAAT4 in a conventional [3H]-d-Asp uptake assay. Notably, thiophene analog 15b and the para-Trifluoromethyl phenyl analog 15d were found to be hEAAT1,2-preferring inhibitors exhibiting IC50values in the high nanomolar range (0.21-0.71 μM) at these two transporters versus IC50values in the low micromolar range at EAAT3,4 (1.6-8.9 μM). In summary, the results presented herein open up for further structure-Activity relationship studies of this new scaffold.
Rapid chemoenzymatic route to glutamate transporter inhibitor l-TFB-TBOA and related amino acids
Fu, Haigen,Younes, Sabry H. H.,Saifuddin, Mohammad,Tepper, Pieter G.,Zhang, Jielin,Keller, Erik,Heeres, André,Szymanski, Wiktor,Poelarends, Gerrit J.
, p. 2341 - 2344 (2017/03/20)
The complex amino acid (l-threo)-3-[3-[4-(trifluoromethyl)benzoylamino]benzyloxy]aspartate (l-TFB-TBOA) and its derivatives are privileged compounds for studying the roles of excitatory amino acid transporters (EAATs) in regulation of glutamatergic neurotransmission, animal behavior, and in the pathogenesis of neurological diseases. The wide-spread use of l-TFB-TBOA stems from its high potency of EAAT inhibition and the lack of off-target binding to glutamate receptors. However, one of the main challenges in the evaluation of l-TFB-TBOA and its derivatives is the laborious synthesis of these compounds in stereoisomerically pure form. Here, we report an efficient and step-economic chemoenzymatic route that gives access to enantio- and diastereopure l-TFB-TBOA and its derivatives at multigram scale.
ONE-POT TRANSFORMATION OF AZIDO-GROUP TO N-(t-BUTOXYCARBONYL)AMINO GROUP
Saito, Seiki,Nakajima, Hitoshi,Inaba, Masami,Moriwake, Toshio
, p. 837 - 838 (2007/10/02)
A convenient one-pot protocol for the conversion of azido-group to N-Boc amino group has been described.
