NBD-14189
目录号 : GC65905NBD-14189 是一种有效的 HIV-1 进入拮抗剂,对 HIV-1HXB2 假病毒的 IC50 为 89nM。NBD-14189 与 HIV-1 gp120 结合并显示出强大的抗病毒活性 (EC50<200 nM)。
Cas No.:2234273-72-2
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NBD-14189 is a potent HIV-1 entry antagonist with an IC50 of 89 nM against the HIV-1HXB2 pseudovirus. NBD-14189 binds to HIV-1 gp120 and shows potent antiviral activity (EC50<200 nM)[1][2].
NBD-14189 has anti-HIV-1 activity (IC50=0.089 μM) and cytotoxicity (CC50=21.9 μM) in single-cycle (TZM-bl cells) assays. NBD-14189 has anti-HIV-1 activity (IC50=0.18 μM) and cytotoxicity (CC50=22.1 μM) in multi-cycle (MT-2 cells) assays[1].
NBD-14189 (0-50 μM) prevents HIV-1 mediated cell-cell fusion with an IC50 of 9.4 μM in indicator cells TZM-bl cells were cocultured with Env- and Tat-expressing HL2/3 cells[1].
NBD-14189 shows weak or no inhibition of the hERG current, with an IC50 of 3.0 μM, respectively[1].
Cas No. | 2234273-72-2 | SDF | Download SDF |
分子式 | C18H16F4N4O2S | 分子量 | 428.4 |
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Comparative Pharmacokinetics of a Dual Inhibitor of HIV-1, NBD-14189, in Rats and Dogs with a Proof-of-Concept Evaluation of Antiviral Potency in SCID-hu Mouse Model
Viruses 2022 Oct 16;14(10):2268.PMID:36298823DOI:10.3390/v14102268.
We earlier reported substantial progress in designing gp120 antagonists. Notably, we discovered that NBD-14189 is not only the most active gp120 antagonist but also shows antiviral activity against HIV-1 Reverse Transcriptase (RT). We also confirmed its binding to HIV-1 RT by X-ray crystallography. The dual inhibition is highly significant because, intriguingly, this compound bridges the dNTP and NNRTI-binding sites and inhibits the polymerase activity of isolated RT in the enzymatic assay. This novel finding is expected to lead to new avenues in designing a novel class of HIV-1 dual inhibitors. Therefore, we needed to advance this inhibitor to preclinical assessment. To this end, we report the pharmacokinetics (PK) study of NBD-14189 in rats and dogs. Subsequently, we assessed the toxicity and therapeutic efficacy in vivo in the SCID-hu Thy/Liv mouse model. The PK data indicated a favorable half-life (t1/2) and excellent oral bioavailability (%F = 61%). NBD-14189 did not show any measurable toxicity in the mice, and treatment reduced HIV replication at 300 mg/kg per day in the absence of clear evidence of protection from HIV-mediated human thymocyte depletion. The data indicated the potential of this inhibitor as an anti-HIV-1 agent and needs to be assessed in a non-human primate (NHP) model.
Preclinical Optimization of gp120 Entry Antagonists as anti-HIV-1 Agents with Improved Cytotoxicity and ADME Properties through Rational Design, Synthesis, and Antiviral Evaluation
J Med Chem 2020 Feb 27;63(4):1724-1749.PMID:32031803DOI:10.1021/acs.jmedchem.9b02149.
We previously reported a milestone in the optimization of NBD-11021, an HIV-1 gp120 antagonist, by developing a new and novel analogue, NBD-14189 (Ref1), which showed antiviral activity against HIV-1HXB2, with a half maximal inhibitory concentration of 89 nM. However, cytotoxicity remained high, and the absorption, distribution, metabolism, and excretion (ADME) data showed relatively poor aqueous solubility. To optimize these properties, we replaced the phenyl ring in the compound with a pyridine ring and synthesized a set of 48 novel compounds. One of the new analogues, NBD-14270 (8), showed a marked improvement in cytotoxicity, with 3-fold and 58-fold improvements in selectivity index value compared with that of Ref1 and NBD-11021, respectively. Furthermore, the in vitro ADME data clearly showed improvements in aqueous solubility and other properties compared with those for Ref1. The data for 8 indicated that the pyridine scaffold is a good bioisostere for phenyl, allowing the further optimization of this molecule.
HIV-1 gp120 Antagonists Also Inhibit HIV-1 Reverse Transcriptase by Bridging the NNRTI and NRTI Sites
J Med Chem 2021 Nov 25;64(22):16530-16540.PMID:34735153DOI:10.1021/acs.jmedchem.1c01104.
HIV-1 infection is typically treated using ≥2 drugs, including at least one HIV-1 reverse transcriptase (RT) inhibitor. Drugs targeting RT comprise nucleos(t)ide RT inhibitors (NRTIs) and non-nucleoside RT inhibitors (NNRTIs). NRTI-triphosphates bind at the polymerase active site and, following incorporation, inhibit DNA elongation. NNRTIs bind at an allosteric pocket ∼10 Å away from the polymerase active site. This study focuses on compounds ("NBD derivatives") originally developed to bind to HIV-1 gp120, some of which inhibit RT. We have determined crystal structures of three NBD compounds in complex with HIV-1 RT, correlating with RT enzyme inhibition and antiviral activity, to develop structure-activity relationships. Intriguingly, these compounds bridge the dNTP and NNRTI-binding sites and inhibit the polymerase activity of RT in the enzymatic assays (IC50 < 5 μM). Two of the lead compounds, NBD-14189 and NBD-14270, show potent antiviral activity (EC50 < 200 nM), and NBD-14270 shows low cytotoxicity (CC50 > 100 μM).
Structure-based lead optimization to improve antiviral potency and ADMET properties of phenyl-1H-pyrrole-carboxamide entry inhibitors targeted to HIV-1 gp120
Eur J Med Chem 2018 Jun 25;154:367-391.PMID:29860061DOI:10.1016/j.ejmech.2018.04.062.
We are continuing our concerted effort to optimize our first lead entry antagonist, NBD-11021, which targets the Phe43 cavity of the HIV-1 envelope glycoprotein gp120, to improve antiviral potency and ADMET properties. In this report, we present a structure-based approach that helped us to generate working hypotheses to modify further a recently reported advanced lead entry antagonist, NBD-14107, which showed significant improvement in antiviral potency when tested in a single-cycle assay against a large panel of Env-pseudotyped viruses. We report here the synthesis of twenty-nine new compounds and evaluation of their antiviral activity in a single-cycle and multi-cycle assay to derive a comprehensive structure-activity relationship (SAR). We have selected three inhibitors with the high selectivity index for testing against a large panel of 55 Env-pseudotyped viruses representing a diverse set of clinical isolates of different subtypes. The antiviral activity of one of these potent inhibitors, 55 (NBD-14189), against some clinical isolates was as low as 63 nM. We determined the sensitivity of CD4-binding site mutated-pseudoviruses to these inhibitors to confirm that they target HIV-1 gp120. Furthermore, we assessed their ADMET properties and compared them to the clinical candidate attachment inhibitor, BMS-626529. The ADMET data indicate that some of these new inhibitors have comparable ADMET properties to BMS-626529 and can be optimized further to potential clinical candidates.