AHU-377 hemicalcium salt - CAS 1369773-39-6
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Not Intended for Therapeutic Use. For research use only.
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LCZ696 is a novel single molecule comprising molecular moieties of valsartan and NEP inhibitor prodrug AHU377 (1:1 ratio). Oral administration of LCZ696 caused dose-dependent increases in atrial natriuretic peptide immunoreactivity (due to NEP inhibition) in Sprague-Dawley rats and provided sustained, dose-dependent blood pressure reductions in hypertensive double-transgenic rats. In healthy participants, a randomized, double-blind, placebo-controlled study (n = 80) of single-dose (200-1200 mg) and multiple-dose (50-900 mg once daily for 14 days) oral administration of LCZ696 showed that peak plasma concentrations were reached rapidly for valsartan (1.6-4.9 hours), AHU377 (0.5-1.1 hours), and its active moiety, LBQ657 (1.8-3.5 hours). LCZ696 is superior to valsartan alone in reducing blood pressure. Preliminary results from a Phase II trial showed that LCZ696 reduced NT-proBNP to a greater extent than valsartan alone, and in addition LCZ696 had beneficial effects on symptoms.
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Related CAS:
149709-62-6 (free acid)
white to off-white solid powder
calcium 4-(((2S,4R)-1-([1,1'-biphenyl]-4-yl)-5-ethoxy-4-methyl-5-oxopentan-2-yl)amino)-4-oxobutanoate; AHU337; AHU-337; AHU 337; LCZ696; LCZ 696; LCZ696; Sacubitril
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1.Hemi-gap-junction channels in solitary horizontal cells of the catfish retina.
DeVries SH1, Schwartz EA. J Physiol. 1992 Jan;445:201-30.
1. Solitary horizontal cells were isolated from catfish retinas and their membrane current was recorded with a whole-cell voltage clamp. Reducing the extracellular Ca2+ concentration produced a current that could be suppressed by dopamine. This Ca(2+)- and dopamine-sensitive current is hereafter termed I gamma. The voltage dependence, cytoplasmic regulation, and permeability of the I gamma channel suggest that it is half of a gap-junction channel. 2. I gamma was voltage and time dependent. In the steady state, the current-voltage relation displayed outward rectification at voltages more depolarized than 0 mV and a negative resistance region at voltages more hyperpolarized than -15 mV. The reversal potential was 3.3 +/- 1.5 mV when NaCl was the predominant extracellular salt and potassium-D-aspartate was the predominant intracellular salt. 3. The size of I gamma depended on the extracellular Ca2+ concentration. I gamma was maximal at external Ca2+ concentrations below 10 microM, half-maximal at 220 microM-Ca2+, and reduced to less than 4% of its maximum amplitude at external Ca2+ concentrations above 1 mM.
2.An improved kilogram-scale preparation of atorvastatin calcium.
Novozhilov YV1, Dorogov MV1, Blumina MV1, Smirnov AV1, Krasavin M2. Chem Cent J. 2015 Feb 13;9:7. doi: 10.1186/s13065-015-0082-7. eCollection 2015.
BACKGROUND: If literature protocols are followed, conversion of an advanced ketal ester intermediate (available in kilogram quantities via a published Paal-Knorr synthesis) to cholesterol-lowering drug atorvastatin calcium is hampered by several process issues, particularly at the final stage where the hemi-calcium salt is obtained.
3.The ion selectivity of a membrane conductance inactivated by extracellular calcium in Xenopus oocytes.
Zhang Y1, McBride DW Jr, Hamill OP. J Physiol. 1998 May 1;508 ( Pt 3):763-76.
1. The ion selectivity of a membrane ion conductance that is inactivated by extracellular calcium (Ca2+o) in Xenopus oocytes has been studied using the voltage-clamp technique. 2. The reversal potential of the Ca2+o-sensitive current (Ic) was measured using voltage ramps (-80 to +40 mV) as a function of the external concentration (12-240 mM) of NaCl or KCl. The direction and amplitude of the shifts in reversal potentials are consistent with permeability ratios of 1:0.99:0.24 for K+:Na+:Cl-. 3. Current-voltage (I-V ) relations of Ic, determined during either voltage ramps of 0.5 s duration or at steady state, displayed pronounced rectification at both hyperpolarized and depolarized potentials. However, instantaneous I-V relations showed less rectification and could be fitted by the constant field equation assuming the above K+:Na+:Cl- permeability ratios. 4. Ion substitution experiments indicated that relatively large organic monovalent cations and anions are permeant through Ic channels with the permeability ratios K+:NMDG+:TEA+:TPA+:TBA+:Gluc- = 1:0.
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