Batefenterol

• CAT Number: I006980
• CAS Number: 743461-65-6
• Molecular Formula: C40H42ClN5O7
• Molecular Weight: 740.24
• Purity: ≥95%
• Synonyms: [1-[3-[2-chloro-4-[[[(2R)-2-hydroxy-2-(8-hydroxy-2-oxo-1H-quinolin-5-yl)ethyl]amino]methyl]-5-methoxyanilino]-3-oxopropyl]piperidin-4-yl] N-(2-phenylphenyl)carbamate
• InChI: InChI=1S/C40H42ClN5O7/c1-52-36-22-33(31(41)21-26(36)23-42-24-35(48)29-11-13-34(47)39-30(29)12-14-37(49)45-39)43-38(50)17-20-46-18-15-27(16-19-46)53-40(51)44-32-10-6-5-9-28(32)25-7-3-2-4-8-25/h2-14,21-22,27,35,42,47-48H,15-20,23-24H2,1H3,(H,43,50)(H,44,51)(H,45,49)/t35-/m0/s1
• InChIKey: URWYQGVSPQJGGB-DHUJRADRSA-N
• SMILES: COC1=CC(=C(C=C1CNCC(C2=C3C=CC(=O)NC3=C(C=C2)O)O)Cl)NC(=O)CCN4CCC(CC4)OC(=O)NC5=CC=CC=C5C6=CC=CC=C6

Batefenterol (GSK961081;TD-5959) is a novel muscarinic receptor antagonist and β2-adrenoceptor agonist; displays high affinity for hM2, hM3 muscarinic and hβ2-adrenoceptor with Ki values of 1.4, 1.3 and 3.7 nM, respectively.
Batefenterol is a novel first-in-class inhaled bifunctional compound possessing both muscarinic antagonist (MA) and β2-adrenoceptor agonist (BA) properties (MABA). In competition radioligand binding studies at human recombinant receptors, batefenterol displays high affinity for hM2 (Ki=1.4 nM), hM3 muscarinic receptors (Ki=1.3 nM) and hβ2-adrenoceptors (Ki=3.7 nM). Batefenterol behaves as a potent hβ2-adrenoceptor agonist (EC50=0.29 nM for stimulation of cAMP levels) with 440- and 320-fold functional selectivity over hβ1- and hβ3-adrenoceptors, respectively[1].
In the guinea pig bronchoprotection assay, inhaled Batefenterol produces potent, dose-dependent inhibition of bronchoconstrictor responses via MA (ED50=33.9 μg/mL), BA (ED50=14.1 μg/mL), and MABA (ED50=6.4 μg/mL) mechanisms. Significant bronchoprotective effects of Batefenterol are evident in guinea pigs via MA, BA, and MABA mechanisms for up to 7 days after dosing[1]. In guinea pig isolated trachea expressing native muscarinic M3 and β2, batefenterol produces smooth muscle relaxation through a dual mechanism involving competitive antagonism of the M3 receptor (EC50=50 nM) and agonism of the β2 receptor (EC50=25 nM). The combined effect on both muscarinic receptors and β2 receptors is more potent than either function working alone (EC50=10 nM). Batefenterol exhibits a rapid rate of clearance and short half-life[2].

Reference

[1]. Hegde SS, et al. Pharmacologic characterization of GSK-961081 (TD-5959), a first-in-class inhaled bifunctional bronchodilator possessing muscarinic receptor antagonist and β2-adrenoceptor agonist properties. J Pharmacol Exp Ther. 2014 Oct;351(1):190-9.
 [Content Brief]

[2]. Hughes AD, et al. Discovery of (R)-1-(3-((2-chloro-4-(((2-hydroxy-2-(8-hydroxy-2-oxo-1,2-dihydroquinolin-5-yl)ethyl)amino)methyl)-5-methoxyphenyl)amino)-3-oxopropyl)piperidin-4-yl [1,1′-biphenyl]-2-ylcarbamate (TD-5959, GSK961081, batefenterol): first-in-class dual pharmacology multivalent muscarinic antagonist and β? agonist (MABA) for the treatment of chronic obstructive pulmonary disease (COPD). J Med Chem. 2015 Mar 26;58(6):2609-22.
 [Content Brief]