98014-76-7Relevant academic research and scientific papers
NOVEL HISTONE METHYLTRANSFERASE INHIBITORS
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Page/Page column 30; 92-93, (2021/04/01)
The present invention relates to novel compounds of formula (I) as defined herein. The compounds are inhibitors of histone methyltransferases of the seven-beta-strand family, in particular of KMT9.
Structure-activity relationship studies on the inhibition of the bacterial translation of novel Odilorhabdins analogues
Cao, Sha,Gualtieri, Maxime,Hjort, Karin,Hughes, Diarmaid,Huseby, Douglas L,Ikaunieks, Martins,Katkevics, Martins,Kukosha, Tatyana,Loza, Einars,Pantel, Lucile,Racine, Emilie,Ryabova, Victoria,Sarciaux, Matthieu,Serri, Marine,Shubin, Kirill,Suna, Edgars,Trufilkina, Nadezhda,Yadav, Kavita
, (2020/04/15)
A structure–activity relationship (SAR) study of NOSO-95179, a nonapeptide from the Odilorhabdin class of antibacterials, was performed by systematic variations of amino acids in positions 2 and 5 of the peptide. A series of non-proteinogenic amino acids was synthesized in high enantiomeric purity from Williams’ chiral diphenyloxazinone by highly diastereoselective alkylation or by aldol-type reaction. NOSO-95179 analogues for SAR studies were prepared using solid-phase peptide synthesis. Inhibition of bacterial translation by each of the synthesized Odilorhabdin analogues was measured using an in vitro test. For the most efficient analogues, antibacterial efficacy was measured against two wild-type Enterobacteriaceae (Escherichia coli and Klebsiella pneumoniae) and against an efflux defective E. coli strain (ΔtolC) to evaluate the impact of efflux on the antibacterial activity.
[Co(TPP)]-Catalyzed Formation of Substituted Piperidines
Lankelma, Marianne,Olivares, Astrid M.,de Bruin, Bas
supporting information, p. 5658 - 5663 (2019/04/08)
Radical cyclization via cobalt(III)-carbene radical intermediates is a powerful method for the synthesis of (hetero)cyclic structures. Building on the recently reported synthesis of five-membered N-heterocyclic pyrrolidines catalyzed by CoII porphyrins, the [Co(TPP)]-catalyzed formation of useful six-membered N-heterocyclic piperidines directly from linear aldehydes is presented herein. The piperidines were obtained in overall high yields, with linear alkenes being formed as side products in small amounts. A DFT study was performed to gain a deeper mechanistic understanding of the cobalt(II)-porphyrin-catalyzed formation of pyrrolidines, piperidines, and linear alkenes. The calculations showed that the alkenes are unlikely to be formed through an expected 1,2-hydrogen-atom transfer to the carbene carbon. Instead, the calculations were consistent with a pathway involving benzyl-radical formation followed by radical-rebound ring closure to form the piperidines. Competitive 1,5-hydrogen-atom transfer from the β-position to the benzyl radical explained the formation of linear alkenes as side products.
Enantioselective Radical Cyclization for Construction of 5-Membered Ring Structures by Metalloradical C-H Alkylation
Wang, Yong,Wen, Xin,Cui, Xin,Zhang, X. Peter
supporting information, p. 4792 - 4796 (2018/04/17)
Radical cyclization represents a powerful strategy for construction of ring structures. Traditional radical cyclization, which is based on radical addition as the key step, necessitates the use of unsaturated substrates. Guided by the concept of metalloradical catalysis, a different mode of radical cyclization that can employ saturated C-H substrates is demonstrated through the development of a Co(II)-based system for catalytic activation of aliphatic diazo compounds for enantioselective radical alkylation of various C(sp3)-H bonds. It allows for efficient construction of chiral pyrrolidines and other valuable 5-membered cyclic compounds. This alternative strategy of radical cyclization provides a new retrosynthetic paradigm to prepare five-membered cyclic molecules from readily available open-chain aldehydes through the union of C-H and C=O elements for C-C bond formation.
Asymmetric Syntheses of (-)-ADMJ and (+)-ADANJ: 2-Deoxy-2-amino Analogues of (-)-1-Deoxymannojirimycin and (+)-1-Deoxyallonojirimycin
Davies, Stephen G.,Figuccia, Aude L. A.,Fletcher Paul, Ai M.,Roberts,Thomson, James E.
, p. 6481 - 6495 (2016/08/16)
The asymmetric syntheses of (-)-ADMJ and (+)-ADANJ, the 2-deoxy-2-amino analogues of (-)-1-deoxymannojirimycin and (+)-1-deoxyallonojirimycin, are described herein. Methodology for the ring-closing iodoamination of bishomoallylic amines followed by in situ ring-expansion (via intramolecular ring-opening of the corresponding aziridinium intermediates with a tethered carbamate moiety) to give oxazolidin-2-ones was initially optimized on a model system. Subsequent application of this methodology to two enantiopure bishomoallylic amines (which were produced via aminohydroxylation of an α,β-unsaturated ester, partial reduction, and reaction of the corresponding aldehyde with vinylmagnesium bromide) also proceeded with concomitant N-debenzylation to afford the corresponding diastereoisomerically pure (>99:1 dr) oxazolidin-2-ones. Subsequent deprotection of these enantiopure templates gave (-)-ADMJ and (+)-ADANJ as single diastereoisomers in 16% and 24% overall yield, respectively.
NOVEL COMPOUNDS USEFUL AS CC CHEMOKINE RECEPTOR LIGANDS
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Page/Page column 36, (2010/07/08)
The present invention relates to novel morpholine, oxazapane and piperidine derivatives that act as ligands for CC chemokine receptors, such as CCR1. The invention also relates to methods of preparing the compounds, compositions containing the compounds, and to methods of treatment using the compounds.
Synthesis and evaluation of oryzalin analogs against Toxoplasma gondii
Endeshaw, Molla M.,Li, Catherine,Leon, Jessica De,Yao, Ni,Latibeaudiere, Kirk,Premalatha, Kokku,Morrissette, Naomi,Werbovetz, Karl A.
scheme or table, p. 5179 - 5183 (2010/10/03)
The synthesis and evaluation of 20 dinitroanilines and related compounds against the obligate intracellular parasite Toxoplasma gondii is reported. Using in vitro cultures of parasites in human fibroblasts, we determined that most of these compounds selectively disrupted Toxoplasma microtubules, and several displayed sub-micromolar potency against the parasite. The most potent compound was N1,N1-dipropyl-2,6-dinitro-4-(trifluoromethyl)-1,3- benzenediamine (18b), which displayed an IC50 value of 36 nM against intracellular T. gondii. Based on these data and another recent report [Ma, C.; Tran, J.; Gu, F.; Ochoa, R.; Li, C.; Sept, D.; Werbovetz, K.; Morrissette, N. Antimicrob. Agents Chemother. 2010, 54, 1453], an antimitotic structure-activity relationship for dinitroanilines versus Toxoplasma is presented.
8-Azabicyclo[3.2.1]octane compounds as mu opioid receptor antagonists
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Page/Page column 44, (2008/06/13)
The invention provides novel 8-azabicyclo[3.2.1]octane compounds of formula (I): wherein R1, R2, R3, A, and G are defined in the specification, or a pharmaceutically-acceptable salt or solvate thereof, that are antagonists at the mu opioid receptor. The invention also provides pharmaceutical compositions comprising such compounds, methods of using such compounds to treat conditions associated with mu opioid receptor activity, and processes and intermediates useful for preparing such compounds.
Pyrimidinone-1,3-oxathiolane derivatives with antiviral activity
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, (2008/06/13)
Compounds of formula (I) wherein Ra and Rb the same or different, are hydrogen atoms, acyl groups deriving from a lower carboxylic acid or chains of formula (a) useful as reverse transcriptase inhibitors antiviral activity are described.
New anti-HIV derivatives: Synthesis and antiviral evaluation
De Michelis,Rocheblave,Priem,Chermann,Kraus
, p. 1253 - 1262 (2007/10/03)
A small focused library of 18 compounds incorporating the motif 1,3-(N,N'-dibenzyl)diamino-2-propanol has been synthesized, using adapted synthetic methodologies. These series of compounds were evaluated for their in vitro anti-HIV activity on infected MT4 cells (syncytium formation observation). Some of the new synthesized compounds show potent anti-HIV activities. EC50 values for compounds (31, 40, 34, 37 and 46Scheme 3(i) Na2SO4, CH2Cl2, rt; (ii) NaBH4, EtOH, 0°C; (iii) Boc2O, CH2Cl2, 0°C; (iv) DMSO, TFAA, Et3N, CH2Cl2, -60°C; (v) TFA, CH2Cl2, rt; (vi) BOP, RCOOH, Et3N, CH2Cl2, rt.) range from 0.1 to 1μM. In order to determine at which level these new derivatives interfere with the HIV replicative cycle, inhibition assays on recombinant HIV protease and HIV integrase have been performed. None of the compounds were found active on these two enzymatic targets. Experiments are in progress in order to identify their biological target within the HIV replicative cycle. Copyright (C) 2000 Elsevier Science Ltd.
