Diuretic agent

FIELD: medicine, pharmaceutics.

SUBSTANCE: what is presented is a diuretic of the aquaretic group that is 4-nitro-phenyl-O-D-glucopyranoside. The agent may be used both to treat greater and lesser circulation congestions caused by cardiac failure, and to intensify water release thereby helping to reduce oedemas. The diuretic agent has high and low saluretic activity unlike the existing diuretics and expands the range of products of synthetic origin possessing diuretic activity.

EFFECT: agent is applicable for treating a number of cardiovascular diseases accompanied by excessive hydration and developing oedema syndrome.

1 tbl

 

The invention relates to pharmacology, namely a drug with diuretic group of aquaretto, and can be used to treat nephritis, pielonefritom, cystitis, hypertension, symptomatic hypertension, diseases, accompanied by the development of edema syndrome, as this substance increases the excretion of water, thereby reducing the swelling.

Currently, there is a need to develop diuretics, high diuretic activity and low toxicity. Of particular interest is the creation of medicines, which has diuretic and does not affect the allocation of kidneys ions of sodium, potassium, magnesium.

It is known tool that has a diuretic effect, namely, ethacrynic acid, which is used as a selective antagonist of sodium-potassium-glastransporter (NKCC).

The disadvantage etakrinova acid is the high toxicity and the absence of diuretic action in animals, for example, in rats.(Bryukhanov V.M., Zverev AF Side effects of modern diuretics: Metabolic and toxic-allergic aspects of Novosibirsk.: CARES, 2003. - 224 S.).

The closest to the achieved result is a tool that has diuretic de is predetermined, namely furosemide.

Lack of furosemide in the first place is salureticheskoe activity. Like all loop diuretics, furosemide inhibits the reabsorption in the renal reabsorption of sodium, potassium and chloride. In addition, furosemide causes such metabolic disorders as hypokalemia, gipohloremicski alkalosis, hyperglycemia, hyperuricemia (Zverev AF, Bryukhanov V.M. Pharmacology and clinical use extrarenal action of diuretics - M: Medical book, 2000. - 256 S.).

The technical result of the proposed drug is the expansion of the means of possessing diuretic activity of synthetic origin.

The technical result is achieved by using 4-nitro-phenyl-O-D-glucopyranoside as a means possessing diuretic properties.

Description of the invention

The inventive tool is a 4-nitro-phenyl-o-O-glucopyranosid the following formula:

The glycoside was obtained using acetobromogalactose in aqueous acetone. The structure was proved by NMR. Acyl protection was removed with sodium methylate. Preparative output: 10,3%.

The proposed tool was prepared as follows: To 0,0012 mol (20% excess relative to p-NITROPHENOL) acetobromogalactose dissolved in 5 ml of acetone. Then add 0.001 mol p-NITROPHENOL is equimolar amount of 1.1 N. Mahon. Leave the reaction mass for 24 hours at room temperature. Then they drive off the acetone under vacuum. The extraction is carried out CHCl3(3×20 ml), washed with 20 ml of 1,1 N. lye. The chloroform solution is dried over calcium chloride. After which the chloroform is distilled off. The oily residue is crystallized from ethyl alcohol. Crystals of 4-nitrophenyl-2,3,4,6-Tetra-O-β-acetyl-D-glucopyranoside filtered.

To a suspension containing 2 g of 4-nitrophenyl-2,3,4,6-Tetra-D-β-acetyl-D-glucopyranoside in 5 ml of absolute methanol, add 0.5 ml of 2 n solution of sodium methylate, the mixture shaken until complete dissolution of the precipitate, then leave at 5 (by 18 hours After 15-20 min is the selection. The solvent is distilled off, the residue is recrystallized from methanol. Yield: 16%.

The NMR spectra of the proposed drug:

An NMR spectrum1H (D2O), δ, ppm: 3.42-3.70 (5H, m, H-2', H-3', H-4', H-5', H-6'b); 3.84 (1H, d, H-6'a, J=12.0 Hz); 5.1 (1H, m, H-1'); 7.13 (2H, d, J=8.1 Hz, H-2, H-6); 8.14 (2H, d, H-3, H-5, J=8.4 Hz).

An NMR spectrum13(D2O), δ, ppm: 60.4 (CH2, C6'); 69.3 (CH, C-4'); 72.7 (CH, C-2'); 75.5 (CH, C-5'), 76,2 (CH, C-3'); 99.4(CH, C-1'); 116.4 (2×CH, C-2, C-6); 126.0 (2×CH, C-3, C-5); 142.42(S, C-4); 161.7 (s, s-1).

The NMR spectra of1H,13With were recorded on FTIR spectrometer Bruker Avante-300 (300 MHz), Bruker (Germany) internal standard HMDS, as dissolve what I used deuterated acetone. The melting point was determined on microsegregation table Boetius of the company Boetius (Germany).

The resulting tool is characterized by the following properties:

white crystals. Soluble in water, alcohol, chloroform.

Pharmacological action the proposed drug tested by biological research. Activity funds were estimated at 12 laboratory rats-females weighing 200-220 grams. In the beginning of the experiment were determined baseline urine output, as well as the content of sodium and potassium in the urine of experimental animals. The concentration of ions in the urine were determined by flame photometry on the analyzer the FCA-2-01 (Russia). The analyte was injected to rats intragastrically for seven days at a dose of 54 µmol/kg Daily in experimental animals was measured volume of allocated urine. The experimental results were processed by the statistical method using the criterion of Mann-Whitney. The difference compared averages were considered significant if the confidence value (P) was less than 0.05.

The table presents comparative characteristics of diuretic activity of 4-nitro-phenyl-O-D-glucopyranoside. Diuretic activity of 4-nitro-phenyl-O-D-glucopyranoside at a dose of 54 µmol/kg

As can be seen from table 1, the introduction of the compounds according to the invention increased daily diuresis 1.5 andmore times compared with the control. Excretion of sodium and potassium ions under the influence of the compounds according to the invention is significantly decreased starting from the 3rd day of the experiment.

Thus, the claimed product has a pronounced diuretic activity and is applicable for treatment of stagnant phenomena in small and large circle circulation caused by congestive heart failure, nephritis, cirrhosis of the liver with symptoms of portal hypertension, hypertension, symptomatic hypertension, glaucoma and other diseases associated with development of edema syndrome.

Table 1.
A means with diuretic
The day of introduction of the analyte of interestIndicators of kidney function
Daily diuresisThe excretion of sodiumExcretion of potassium
Control2,42±0,3329,71±9,66451,41±45,27
1 day3,93±0,53*33,33±10,44618,33±69,25
P<0,05P<0,05
day 2to 4.38±0,54*
P<0,01--------
3 day4,34±0,55*9,49±1,59321,67±41,14*
P<0,01P<0,05P<0,05
day 4of 4.44±0,51*
P<0,01--------
5 day3,84±0,719,19±2,00*315,53±49,54*
P<0,05P<0,05
day 63,76±0,70--------
day 7 5,17±0,68*of 7.96±0,83398,99±33,68
P<0,01P<0,05
Note. The asterisk is a difference significantly compared to control.

The use of 4-nitro-phenyl-O-D-glucopyranoside of the formula

as a means possessing diuretic.



 

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