69489-40-3Relevant academic research and scientific papers
A NEW CLASS OF FLAVIVIRUS PROTEASE INHIBITORS
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Paragraph 76-77, (2021/09/11)
The present invention relates to compounds that inhibit the activity of flavivirus.
Beyond Basicity: Discovery of Nonbasic DENV-2 Protease Inhibitors with Potent Activity in Cell Culture
Kühl, Nikos,Leuthold, Mila M.,Behnam, Mira A. M.,Klein, Christian D.
supporting information, p. 4567 - 4587 (2021/05/06)
The viral serine protease NS2B-NS3 is one of the promising targets for drug discovery against dengue virus and other flaviviruses. The molecular recognition preferences of the protease favor basic, positively charged moieties as substrates and inhibitors, which leads to pharmacokinetic liabilities and off-target interactions with host proteases such as thrombin. We here present the results of efforts that were aimed specifically at the discovery and development of noncharged, small-molecular inhibitors of the flaviviral proteases. A key factor in the discovery of these compounds was a cellular reporter gene assay for the dengue protease, the DENV2proHeLa system. Extensive structure-activity relationship explorations resulted in novel benzamide derivatives with submicromolar activities in viral replication assays (EC50 0.24 μM), selectivity against off-target proteases, and negligible cytotoxicity. This structural class has increased drug-likeness compared to most of the previously published active-site-directed flaviviral protease inhibitors and includes promising candidates for further preclinical development.
A New Class of Dengue and West Nile Virus Protease Inhibitors with Submicromolar Activity in Reporter Gene DENV-2 Protease and Viral Replication Assays
Kühl, Nikos,Graf, Dominik,Bock, Josephine,Behnam, Mira A. M.,Leuthold, Mila-Mareen,Klein, Christian D.
supporting information, p. 8179 - 8197 (2020/09/21)
Dengue and West Nile virus are rapidly spreading global pathogens for which no specific therapeutic treatments are available. One of the promising targets for drug discovery against dengue and other flaviviruses is the viral serine protease NS2B-NS3. We present the design, synthesis, and in vitro and cellular characterization of a novel chemotype of potent small-molecule non-peptidic dengue protease inhibitors derived from 4-benzyloxyphenylglycine. A newly developed luciferase-based DENV-2 protease reporter system in HeLa cells (DENV2proHeLa) was employed to determine the activity of the compounds in a cellular environment. Specificity and selectivity of the DENV2proHeLa system were confirmed by viral titer reduction assays. The compounds reach low micromolar to upper nanomolar inhibitory potency in cell-based assays, are selective against other serine proteases, and do not show relevant cytotoxicity. An extensive structure-activity relationship study provides a perspective for further drug development against flaviviral infections.
Discovery of Nanomolar Dengue and West Nile Virus Protease Inhibitors Containing a 4-Benzyloxyphenylglycine Residue
Behnam, Mira A. M.,Graf, Dominik,Bartenschlager, Ralf,Zlotos, Darius P.,Klein, Christian D.
, p. 9354 - 9370 (2015/12/23)
The dengue virus (DENV) and West Nile Virus (WNV) NS2B-NS3 proteases are attractive targets for the development of dual-acting therapeutics against these arboviral pathogens. We present the synthesis and extensive biological evaluation of inhibitors that
Syntheses of amino alcohols and chiral C2-symmetric bisoxazolines derived from O-alkylated R-4-hydroxyphenylglycine and S-tyrosine
Caplar, Vesna,Raza, Zlata,Katalenic, Darinka,Zinic, Mladen
, p. 23 - 36 (2007/10/03)
Chiral C2-symmetric bisoxazolines 1b-f and 2b,c, derived from 4′-O-alkylated R-4-hydroxyphenylglycine or S-tyrosine, were prepared. As intermediates, a series of chiral amino alcohols possessing substituted phenolic groups was prepared and fully characterized.
Solid-phase synthesis using (Allyloxy)carbonyl(Alloc) chemistry of a putative heptapeptide intermediate in vancomycin biosynthesis containing m-chloro-3-hydroxytyrosine
Freund, Ernst,Vitali, Francesca,Linden, Anthony,Robinson, John A.
, p. 2572 - 2579 (2007/10/03)
A convenient method for the solid-phase synthesis of putative linear heptapeptide intermediates in vancomycin biosynthesis is described, in particular, the heptapeptide D-Leu-Cyt-L-Asn-Hpg-Hpg-Cyt'-Dhpg (Cyt = (2R,3R)-m-chloro-3-hydroxytyrosine, Hpg = (R)-2-(p-hydroxyphenyl)glycine, Cyt' = (2S,3R)-m-chloro-3-hydroxytyrosine and Dhpg = (S)-2-(3,5-dihydroxyphenyl)glycine). The synthesis was performed on chlorotrityl resin and employed the (allyloxy)carbonyl protecting group for temporary N(α) protection during peptide-chain assembly.
Stereoselective synthesis of (S)-MPPG, (S)-MTPG and (S)-(+)-αM4CPG from (R)-4-hydroxyphenylglycine
Ma, Dawei,Tian, Hongqi
, p. 3493 - 3496 (2007/10/03)
(R)-4-Hydroxyphenylgrycine was protected with a benzyl group and a methyl group was introduced at the α position by using the self-regeneration-of-stereocentre method. After the 4-hydroxy group had been converted into the corresponding trifluoromethanesulfonate (triflate), three palladium-catalyzed reactions were employed to furnish (S)-α-methyl-4-phosphonophenylglycine [(S)-MPPG], (S)-α-methyl-4-(tetrazol-5-yl)phenylglycine [(S)-MTPG] and (S)-4-carboxyphenyl-α-methylglycine [(S)-αM4CPG], a class of new and selective antagonists of metabotropic glutamate receptors.
Stereoselective synthesis of (S)-(+)-αM4CPG, a selective antagonist of metabotropic glutamate receptors
Ma, Dawei,Tian, Hongqi
, p. 1567 - 1570 (2007/10/03)
The synthesis, from (R)-4-hydroxyphenylglycine, of (+)-α-methyl-4- carboxy-phenylglycine ((+)-αM4CPG), a new and selective antagonist of metabotropic glutamate receptor, and assignment of its absolute configuration, are described.
