KB-130015
(Synonyms: KB015) 目录号 : GC48432An antiarrhythmic agent
Cas No.:147030-48-6
Sample solution is provided at 25 µL, 10mM.
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KB-130015 is an antiarrhythmic agent and a derivative of amiodarone .1 It inhibits potassium currents induced by acetylcholine or adenosine in isolated guinea pig atrial myocytes (IC50s = 0.82 and 0.57 µM, respectively).2 KB-130015 activates or inhibits the voltage-gated potassium channel human-ether-a-go-go (hERG), also known as Kv11.1, in HEK293 cells in a voltage-dependent manner.3 It activates large-conductance calcium-activated potassium (BKCa) channels in HEK293 cells expressing the BKCa subunit Slo1 (EC50 = 20.2 μM).4 KB-130015 (40 mg/kg) prolongs the duration of electrically stimulated action potentials in guinea pig papillary muscle ex vivo.1 It is also an antagonist of human thyroid hormone receptor α (TRα) and TRβ (IC50s = 2.2 and 4.1 µM, respectively, in reporter assays).
1.Carlsson, B., Singh, B.N., Temciuc, M., et al.Synthesis and preliminary characterization of a novel antiarrhythmic compound (KB130015) with an improved toxicity profile compared with amiodaroneJ. Med. Chem.45(3)623-630(2002) 2.Brandts, B., Borchard, R., Macianskiene, R., et al.Inhibition of G protein-coupled and ATP-sensitive potassium currents by 2-methyl-3-(3,5-diiodo-4-carboxymethoxybenzyl)benzofuran (KB130015), an amiodarone derivativeJ. Pharmacol. Exp. Ther.308(1)134-142(2004) 3.Gessner, G., Macianskiene, R., Starkus, J.G., et al.The amiodarone derivative KB130015 activates hERG1 potassium channels via a novel mechanismEur. J. Pharmacol.632(1-3)52-59(2010) 4.Gessner, G., Heller, R., Hoshi, T., et al.The amiodarone derivative 2-methyl-3-(3,5-diiodo-4-carboxymethoxybenzyl)benzofuran (KB130015) opens large-conductance Ca2+-activated K+ channels and relaxes vascular smooth muscleEur. J. Pharmacol.555(2-3)185-193(2007)
Cas No. | 147030-48-6 | SDF | |
别名 | KB015 | ||
Canonical SMILES | O=C(COC1=C(C=C(CC2=C(C)OC3=C2C=CC=C3)C=C1I)I)O | ||
分子式 | C18H14I2O4 | 分子量 | 548.1 |
溶解度 | DMSO: 10 mg/ml,Ethanol: 10 mg/ml | 储存条件 | -20°C |
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1 mg | 5 mg | 10 mg | |
1 mM | 1.8245 mL | 9.1224 mL | 18.2448 mL |
5 mM | 0.3649 mL | 1.8245 mL | 3.649 mL |
10 mM | 0.1824 mL | 0.9122 mL | 1.8245 mL |
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Dronedarone: an amiodarone analogue
Expert Opin Investig Drugs 2004 Apr;13(4):415-26.PMID:15102590DOI:10.1517/13543784.13.4.415.
Of the antiarrhythmic drugs in current use, amiodarone is one of the most effective and is associated with a comparatively low risk of drug-induced pro-arrhythmia, probably due to its multiple pharmacological actions on cardiac ion channels and receptors. However, amiodarone is associated with significant extra-cardiac side effects and this has driven development of amiodarone analogues. These analogues include short acting analogues (e.g., AT-2001) with similar acute effects to amiodarone, the thyroid receptor antagonist KB-130015 and dronedarone. Dronedarone, (SR-33589; Sanofi-Synthelabo), is a non-iodinated amiodarone derivative that inhibits Na +, K + and Ca 2+ currents. It is a potent inhibitor of the acetylcholine-activated K + current from atrial and sinoatrial nodal tissue, and inhibits the rapid delayed rectifier more potently than slow and inward rectifier K + currents and inhibits L-type calcium current. Dronedarone is an antagonist at alpha- and beta-adrenoceptors and unlike amiodarone, has little effect at thyroid receptors. Dronedarone is more potent than amiodarone in inhibiting arrhythmias and death in animal models of ischaemia- and reperfusion-induced arrhythmias. In the Dronedarone Atrial Fibrillation Study After Electrical Cardioversion (DAFNE) clinical trial, dronedarone 800 mg/day appeared to be effective and safe for the prevention of atrial fibrillation relapses after cardioversion. The Antiarrhythmic Trial with Dronedarone in Moderate-to-Severe Congestive Heart Failure Evaluating Morbidity Decrease (ANDROMEDA) trial was stopped due to a potential increased risk of death in the dronedarone group. Trials of dronedarone in the maintenance of sinus rhythm in patients with atrial fibrillation and a safety and tolerability study in patients with an implantable cardioverter defibrillator are ongoing. Further experimental and clinical studies are required before we have a definitive answer to whether dronedarone has advantages over amiodarone and other amiodarone analogues.
Effects of metabolites and analogs of amiodarone on alveolar macrophages: structure-activity relationship
Am J Physiol Lung Cell Mol Physiol 2004 Aug;287(2):L438-47.PMID:15075249DOI:10.1152/ajplung.00434.2003.
Amiodarone, an antiarrhythmic drug toxic toward the lung, is metabolized through sequential modifications of the diethylaminoethoxy group to mono-N-desethylamiodarone (MDEA), di-N-desethylamiodarone (DDEA), and amiodarone-EtOH (B2-O-EtOH), whose effects on lung cells are unclear. To clarify this, we exposed rabbit alveolar macrophages to analogs with different modifications of the diethylaminoethoxy group and then searched for biochemical signs of cell damage, formation of vacuoles and inclusion bodies, and interference with the degradation of surfactant protein A, used as a tracer of the endocytic pathway. The substances studied included MDEA, DDEA, and B2-O-EtOH, analogs with different modifications of the diethylaminoethoxy group, fragments of the amiodarone molecule, and the antiarrhythmic agents dronedarone (SR-33589) and KB-130015. We found the following: 1). MDEA, DDEA, and B2-O-EtOH rank in order of decreasing toxicity toward alveolar macrophages, indicating that dealkylation and deamination of the diethylaminoethoxy group represent important mechanisms of detoxification; 2). dronedarone has greater, and KB-130015 has smaller, toxicity than amiodarone toward alveolar macrophages; and 3). the benzofuran moiety, which is toxic to liver cells, is not directly toxic toward alveolar macrophages.