Talnetant (SB 223412) 是一种选择性的、竞争性的、脑渗透性 NK3 受体拮抗剂，在 hNK-3-CHO 细胞中的 Ki 值为 1.4 nM。
| Cas No. | 174636-32-9 |
| 别名 | SB-223412;SB223412;SB 223412 |
| 化学名 | 3-hydroxy-2-phenyl-N-(1-phenylpropyl)quinoline-4-carboxamide |
| Canonical SMILES | CCC(C1=CC=CC=C1)NC(=O)C2=C(C(=NC3=CC=CC=C32)C4=CC=CC=C4)O |
| 分子式 | C25H22N2O2 |
| 分子量 | 382.45 |
| 溶解度 | DMSO: 25 mg/ml |
| 储存条件 | Store at -20℃ |
| General tips | For obtaining a higher solubility , please warm the tube at 37 ℃ and shake it in the ultrasonic bath for a while. |
| Shipping Condition | Evaluation sample solution : ship with blue ice
All other available size: ship with RT , or blue ice upon request |
| 产品描述 | Description:
IC50 Value: 1.4 nM (hNK-3-CHO binding Ki) [1]
Talnetant (SB 223412) is a potent and selective NK3 receptor antagonist. Selectivity studies versus the other neurokinin receptors (hNK-2-CHO and hNK-1-CHO) revealed that Talnetant is about 100-fold selective for the hNK-3 versus hNK-2 receptor, with no affinity for the hNK-1 at concentrations up to 100 microM.
in vitro: In vitro studies demonstrated that 53 is a potent functional antagonist of the hNK-3 receptor (reversal of senktide-induced contractions in rabbit isolated iris sphincter muscles and reversal of NKB-induced Ca2+ mobilization in CHO cells stably expressing the hNK-3 receptor), while in vivo this compound showed oral and intravenous activity in NK-3 receptor-driven models (senktide-induced behavioral responses in mice and senktide-induced miosis in rabbits) [1]. Talnetant has high affinity for recombinant human NK3 receptors (pKi 8.7) and demonstrates selectivity over other neurokinin receptors (pKi NK2 = 6.6 and NK1<4). In native tissue-binding studies, talnetant displayed high affinity for the guinea pig NK3 receptor (pKi 8.5) [3].
in vivo: Rectal barostat tests were performed on 102 healthy volunteers, randomized to receive either oral talnetant 25 or 100 mg or placebo over 14-17 days [2]. Talnetant (3-30 mg/kg i.p.) significantly attenuated senktide-induced 'wet dog shake' behaviors in the guinea pig in a dose-dependent manner. Microdialysis studies demonstrated that acute administration of talnetant (30 mg/kg i.p.) produced significant increases in extracellular dopamine and norepinephrine in the medial prefrontal cortex and attenuated haloperidol-induced increases in nucleus accumbens dopamine levels in the freely moving guinea pigs [3].
Toxicity: Talnetant had no effect on rectal compliance, sensory thresholds or intensity ratings compared with placebo [2].
Clinical trial: Study Of Talnetant Versus Placebo And Risperidone In Schizophrenia. Phase 2 |
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