Abanoquil mesilate - CAS 118931-00-3
Catalog number: 118931-00-3
Category: Inhibitor
Not Intended for Therapeutic Use. For research use only.
Molecular Formula:
Molecular Weight:
Adrenergic Receptor
This molecular is an active biochemical as a Alpha 1 adrenergic receptor antagonist. However, no developments were reported for Ischaemic heart disorders and Arrhythmias.
2-(6,7-dimethoxy-3,4-dihydro-1H-isoquinolin-2-yl)-6,7-dimethoxyquinolin-4-amine;methanesulfonic acid,TCMDC-131968,UK 52046
Soluble in DMSO
-20°C Freezer
Arrhythmias; Ischaemic heart disorders
Quality Standard:
In-house standard
Shelf Life:
2 month in rt, long time
Canonical SMILES:
Current Developer:
Originator: Pfizer
1.Duration of action and effect on baroreflex function of the anti-arrhythmic alpha 1 antagonist UK-52,046.
Spiers JP;Harron DW;Wilson R J Pharm Pharmacol. 1991 Jan;43(1):70-2.
The effects of acute and chronic oral administration of UK-52,046 (25 micrograms kg-1) on baroreflex function and its duration of action, were studied in conscious dogs. It was found that UK-52,046 had no effect on blood pressure and heart rate following acute and chronic administration. UK-52,046 shifted the phenylephrine dose response curve to the right, and the PE50 (measure of alpha 1-adrenoceptor antagonism) was increased (P less than 0.05) compared to placebo on day 1 (2, 4, 8 and 24 h) and day 8 (2, 4, 8 and 12 h). The antagonism was increased (P less than 0.05) on day 8 (0, 8 and 12 h) compared with day 1. Evaluation of the effects of UK-52,046 on baroreflex function using phenylephrine to increase blood pressure indicated no significant difference from placebo. It was concluded that at an antiarrhythmic dose, UK-52,046 has no effect on blood pressure, heart rate or baroreflex function. The pressor response curve was shifted to the right indicating a duration of action of at least 12 h on chronic oral administration.
2.Studies with abanoquil (UK-52,046) a novel quinoline alpha 1-adrenoceptor antagonist: II. Duration of action, pharmacokinetics and concentration-effect relationships in normotensive subjects.
Schafers RF;Elliott HL;Meredith PA;Miller SH;Reid JL Br J Clin Pharmacol. 1991 Nov;32(5):605-10.
1. This study further examines the quinoline-derivative abanoquil with particular respect to the duration of its alpha 1-adrenoceptor antagonist activity and its concentration-effect relationship following a single intravenous bolus dose of 0.5 micrograms kg-1 in young, normotensive males. 2. alpha 1-adrenoceptor antagonism (as assessed by phenylephrine pressor responses) was detectable for up to 12 h post dosing: at 12 h there was a significant 1.5-fold rightward shift (95% CI: 2.2 to 1.1) of the pressor dose-response curve for diastolic blood pressure. 3. Despite evidence of substantial alpha 1-adrenoceptor antagonism abanoquil had no significant effect on blood pressure, supine and erect, but there were small and statistically significant increments in heart rate. 4. The degree of alpha 1-adrenoceptor antagonism was related to whole blood concentrations abanoquil: the PD-ratios of phenylephrine pressor responses performed at 1, 6, and 12 h post dosing were significantly correlated with log drug concentrations (r = 0.57 for systolic (P less than 0.05) and r = 0.78 for diastolic blood pressure (P less than 0.005). 5. In conclusion, abanoquil produced significant alpha 1-adrenoceptor antagonism which was related to circulating drug concentrations.
3.Studies with abanoquil (UK-52,046) a novel quinoline alpha 1-adrenoceptor antagonist: I. Effects on blood pressure, heart rate and pressor responsiveness in normotensive subjects.
Schafers RF;Elliott HL;Howie CA;Reid JL Br J Clin Pharmacol. 1991 Nov;32(5):599-604.
1. Abanoquil (UK 52,046) is a novel, quinoline-derivative, alpha 1-adrenoceptor antagonist which, on the basis of animal studies, possesses antiarrhythmic activity at doses which have little or no effect on blood pressure. 2. In two placebo-controlled, double-blind, crossover studies the alpha 1-adrenoceptor antagonist activity (phenylephrine pressor responses) and the effects on blood pressure and heart rate (in the presence and absence of concomitant beta-adrenoceptor blockade) have been investigated in healthy, normotensive subjects following the intravenous administration (i.v.) of abanoquil. 3. In the first study, abanoquil at a dose of 0.4 micrograms kg-1 i.v. (as a bolus or by increments) produced significant alpha 1-adrenoceptor antagonism (with rightward shifts of more than two-fold in the phenylephrine pressor dose-response curves) but no significant effects on supine or erect blood pressure and heart rate. 4. In the second study, a dose of 0.5 micrograms kg-1 i.v. had no significant effect on supine or erect blood pressure but pre-treatment with atenolol promoted a small fall in erect blood pressure without causing significant orthostatic hypotension. 5. In conclusion, significant alpha 1-adrenoceptor antagonism without marked reflex tachycardia or profound postural hypotension suggest that abanoquil has a different haemodynamic profile from that of 'classical' peripheral alpha 1-adrenoceptor antagonists.
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