CA2138331A1 - Use of phosphoric acid esters and phosphonic acid esters for treating disorders of cognitive function and depressions - Google Patents

Use of phosphoric acid esters and phosphonic acid esters for treating disorders of cognitive function and depressions

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Publication number
CA2138331A1
CA2138331A1 CA002138331A CA2138331A CA2138331A1 CA 2138331 A1 CA2138331 A1 CA 2138331A1 CA 002138331 A CA002138331 A CA 002138331A CA 2138331 A CA2138331 A CA 2138331A CA 2138331 A1 CA2138331 A1 CA 2138331A1
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Prior art keywords
methyl
pyrimidin
tert
butyl
carbon atoms
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
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CA002138331A
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French (fr)
Inventor
Fritz Maurer
Bernard Schmidt
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Bayer AG
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Individual
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Publication date
Priority claimed from DE4343599A external-priority patent/DE4343599A1/en
Priority claimed from DE4343600A external-priority patent/DE4343600A1/en
Application filed by Individual filed Critical Individual
Publication of CA2138331A1 publication Critical patent/CA2138331A1/en
Abandoned legal-status Critical Current

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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K31/00Medicinal preparations containing organic active ingredients
    • A61K31/66Phosphorus compounds
    • A61K31/675Phosphorus compounds having nitrogen as a ring hetero atom, e.g. pyridoxal phosphate
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K31/00Medicinal preparations containing organic active ingredients
    • A61K31/66Phosphorus compounds
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07FACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
    • C07F9/00Compounds containing elements of Groups 5 or 15 of the Periodic Table
    • C07F9/02Phosphorus compounds
    • C07F9/547Heterocyclic compounds, e.g. containing phosphorus as a ring hetero atom
    • C07F9/645Heterocyclic compounds, e.g. containing phosphorus as a ring hetero atom having two nitrogen atoms as the only ring hetero atoms
    • C07F9/6509Six-membered rings
    • C07F9/6512Six-membered rings having the nitrogen atoms in positions 1 and 3

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  • Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Epidemiology (AREA)
  • Organic Chemistry (AREA)
  • Medicinal Chemistry (AREA)
  • Pharmacology & Pharmacy (AREA)
  • Animal Behavior & Ethology (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Molecular Biology (AREA)
  • Biochemistry (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)

Abstract

The use of phosphoric acid esters and phosphonic acid esters for treating disorders of cognitive function and depressions Abstract The present invention relates to the use of phosphoric acid esters and phosphonic acid esters for preparing medicaments for the treatment of disorders of cognitive function and of emotional disturbances, in particular of Alzheimers disease, and of depressions.

Description

` 2138331 ;`

, ., ~
The invention relates to the use of phosphoLlc acid esters and phosphonic acid esters for the treatment and prevention of disorders of co~nitive function and depressions, and to pharmaceutical agents and their preparation.

DE 2 642 981, DE 2 209 554, EP 305 840 and EP 279 259 disclose phosphoric acid esters and phosphonic acid esters which are employed for controlling insects.

It has now been found that phosphoric acid esters and 10 phosphonic acid esters of the general.formula (I) . .:.
X
Il ~OR

XJ~N (I) ~ ~`
R3 NJ\R2 in which R - represents straight-chain or branched alkyl having up to 6 carbon atoms, Rl - represents straight-chain or branched alkyl or .
lS alkoxy having up to 6 carbon atoms, R2 _ represents hydrogen, or . -:-' ~: :: ~,:. `
~. ~
''`,'`.,'','.' '-''`...:-'`".'' . : ' :~ . '~` -` ,' ~ :, :: ': .: :` ' - :' : ::: :.: ':
q~P102 - 1- ;~.. ;:'`"'`'.. `.'.'.-'`

21~83~1 .

represents straight-chain or branched alkyl, alkoxy or alkylthio having up to 6 carbon atoms, or represents dialkylamino having up to.4 carbon atoms in each alkyl group, or represents cycloalkyl having from 3 to 7 carbon atoms, R3 - represents straight-chain or branched alkoxy or ;~
alkyl having up to 6 carbon atoms which can be substituted by alkoxy having up to 4 carbon atoms, or represents hydrogen, R~ - represents halogen, hydrogen or straight-chain or branched alkyl or alkoxy having up to 4 carbon atoms, and X -- denotes oxygen or sulphur, and their physiologically tolerated salts, as well as their isomers, can be employed for the treatment and prevention of disorders of cognitive function and ,, 20 depressions. .

On the basis of the experimental results, the compounds of the formula (I) are suitable for the treatment and ::~
prevention of disorders of cognitive . function, in par~
ticular for the treatment of senile and presenile '`'', '' ~ ,''''''''`'~

,' "~ ' '' ,~',' ,' '- ' ' `,','`, `',.`' ~`,''', TP 1_2 - 2 -. - - ~.: .:

dementia, dementia of the Alzheimer type, AIDS-related dementia, cognitive deficiencies in cases of Parkinson's disease or consequence of infarction events, and for the treatment 5 of depressions. ~ :-: .:::
:: :.: : .
Particularly suitable for treating and preventing dis~
orders of cognitive function and depressions are those compounds of the formula (I) in which ~ ;
::
10 R represents straight-chain or branched alkyl -~
having up to 4 carbon atoms, ;~

R~ represents straight-chain or branched alkyl or alkoxy having up to 4 carbon atoms, R2 represents hydrogen,.or represents straight-chain or branched alkyl or alkoxy having up to 4 carbon atoms, or ::
represents dialkylamino having in each case up to 3 carbon atoms in each alkyl group, or represents cycloalkyl having from 3 to 6 carbon .`
atoms, :~

R3 represents straight-chain or branched alkyl or ; ~.
alkoxy having up to 4 carbon atoms, or represents .--:
methoxymethyl, or represents hydrogen,:~

. .,,..... - .,~i.
''. :'-'','' TP 102 ~ 3 ~

;: ~.. ,'.. ,.~ `, :,',.

` 21~3~1 R4 represents hydrogen or methoxy, and .
X represents sulphur, ;~
and salts thereof.
5 Particularly preferably used are compounds of the formula , ~ . .; ,, in which R represents methyl, R' represents methyl, ethyl, propyl or methoxy, 10 R2 represents cyclopropyl, methyl, ethyl, isopropyl, tert-butyl, or represent~ methoxy or ethoxy, or represents dimethylamino, R3 represent~ methyl, ethyl, alkoxy having up to 4 carbon atoms or methoxymethyl, R4 represents hydrogen or methoxy, and 6alts thereof.

Over and above this, the present invention relates to the .~. ..' - ' ` ~' TP 102 - 4 ~

.,,~ ~ . ~ . . .
2 1 3 ~
. .

novel substances which are listed below:
0-(6-Methoxy-2-tert-butyl-pyrimidin-4-yl)-0-methyl-thionomethanephosphonic acid diester, -0-(6-n-Butyloxy-2-tert-butyl-pyrimidin-4-yl)-0-methyl- ~:
thionoethanephosphonic acid diester, 0-~6-Methyl-2-tert-butyl-pyrimidin-4-yl)-0-methyl-thiono-methanephosphonic acid diester, 0-(6-Methoxy-2-tert-butyl-pyrimidin-4-yl)-0-methyl-thionopropanephosphonic acid diester, ~ :
10 0-(6-Methyl-2-isopropyl-pyrimidin-4-yl)-0-methyl- :
thionomethanephosphonic acid diester, 0-(6-Ethoxy-2-tert-butyl-pyrimidin-4-yl)-0-methyl-thiono-methanephosphonic acid diester, 0-(6-Propoxy-2-tert-butyl-pyrimidin-4-yl)-0-methyl- .
thionoethanephosphonic acid diester, 0-(6-Propoxy-2-tert-butyl-pyrimidin-4-yl)-0-methyl- ~ -thionomethanephosphonic acid diester, . `.
0-(6-Butoxy-2-tert-butyl-pyrimidin-4-yl)-0-methyl-thiono-methanephosphonic acid diester, 0-(6-Methyl-2-cyclopropyl-pyri m; din-4-yl)-0,0-dimethyl- :~
thionophosphoric acid triester, 0-(6-Methoxy-2-tert-butyl-pyrimidin-4-yl)-0,0-dimethyl- : -thionophosphoric acid triester, 0-(6-Ethoxy-2-tert-butyl-pyrimidin-4-yl)-0,0-dimethyl-thionophosphoric acid triester, 0-(6-Propoxy-2-tert-butyl-pyrimidin-4-yl)-0,0-dimethyl-thionophosphoric acid triester, 0-(6-Butoxy-2-tert-butyl-pyrimidin-4-yl)-0,0-dimethyl~
thionophosphoric acid triester, 0-(6-Propoxy-2-cyclopropyl-pyrimidin-4-yl)-0,0-dimethyl-. ~ ,. . --: .:
~ .''`'. ~''' ''' " ' ''' ~ 5 --' ::: :

2 ~ 3 1 : ; ~

thionophosphoric acid triester, 0-(5-Methoxy-2-tert-butyl-pyrimidin-4-yl)-0,0-dimethyl-thionophosphoric acid triester. -~
The novel and known compounds of the formula (I), used in ~-accordance with the invention, are prepared by [A] Reacting phosphonoyl or phosphoryl halides of the formula (II) . .~ - .

H I l ~OR
a~
D ~ ~: ::: ~ - .:.:

in which R, Rl and X have the given meaning, and Hal represents halogen, preferably chlorine, .. ..... ~, -: -: ~ -with 4-hydroxy-pyrimidines of the formula (III) OH

R3 N~R2 (111 in which R2, R3 and R4 have the given meaning, optionally in the presence of acid-binding agents or : ~

. ~-` 2i38331 .

optionally in the form of the alkali metal, alkaline earth metal or ammonium salts and optionally in the presence of solvents.

The starting compounds of the formulae (II) and (III) are known or can be prepared by known methods.

The process for preparing the compounds of the formula (I) is preferably carried out using diluents. Practically all inert organic solvents are suitable for use a6 diluents in this context. The solvents preferably include aliphatic and aromatic, optionally halogenated hydro~
carbons, such as pentane, hexane, heptane, cyclohexane, petroleum ether, benzine, ligroin, benzene, toluene, xylene, methylene chloride, ethylene chloride, chloro-form, carbon tetrachloride, chlorobenzene and o-dichloro-benzene, ethers, such as diethyl ether, dibutyl ether,glycol dimethyl ether and diglycol dimethyl ether, tetrahydrofuran and dioxane, ketones, such as acetone, methyl ethyl ketone, methyl isopropyl ketone and methyl isobutyl ketone, esters, such as methyl acetate and ethyl acetate, nitriles, such as, for example, acetonitrile and propionitrile, amides, such as, for example, dimethyl-for ~ de, dimethylacet~m;de and N-methylpyrrolidone, as well as dimethyl sulphoxide, tetramethylene sulphone and hexamethylphosphoric triamide.

~ 25 Acid-binding agents which are customarily utilizable for ;~ reactions of this nature may be employed as acid ~ acceptors. Those which are preferable are alkali metal ~ , . ~ . .

21383~1 hydrides and alkaline earth metal hydrides, such as lithium, sodium, potassium and calcium hydride, alkali metal hydroxides and alkaline earth metal hydroxides, such as lithium, sodium, potassium and calcium hydroxide, alkali metal carbonates and hydrogen carbonates and alkaline earth metal carbonates and hydrogen carbonates, such as sodium carbonate or sodium hydrogen carbonate and potassium carbonate or potassium hydrogen carbonate, as well as calcium carbonate, alkali metal acetates, such as sodium and potassium acetate, alkali metal alcoholates, such as sodium and potassium tert-butoxide, and, additionally, basic nitrogen compounds, such as tri~
methylamine, triethylamine, tripropylamine, tributyl-amine, t.riisobutylamine, ethyldiiso-propylamine, ethyldicyclohexylamine, N,N-dimethylbenzyl-amine, N,N-dimethyl-aniline, pyridine, 2-methyl-, 3-methyl-, 4-methyl-, 2,4-dimethyl-, 2,6-dimethyl-, 2,6-dimethyl-, 2-ethyl-, 4-ethyl- and 5-ethyl-2-methyl-pyridine, 1,5-diazabicyclo-[4.3.0]-non-5-ene (DBN), 1,8-diazabicyclo-[5.4.0~-undec-7-ene (DBU) and 1,4-diaza-bicyclo-t2.2.2]-octane (DABCO).

The reaction temperatures can be varied over a relatively wide range. In general, temperature of between 0C and 100C, preferably temperatures of between 10C and 80C, are employed.

In general, the process is carried out under standard pressure. However, it is also possible to carry it out under elevated or reduced pressure.

! : .
-TP 102 - 8 - ~ ~

:. .:
. ' ' . .

21~8331 For carrying out the process, the starting compounds ~ A .:
which are required in each case are generally employed in approximately equimolar quantities. However, it is also possible to use one of the two components employed in 5 each case in a relatively large excess. In general, the ~ ;
reaction is carried out in a suitable diluent in the presence of an acid acceptor, and the reaction mixture is stirred for several hours at the temperature which is required on each occasion. The working up is in each case effected in accordance with the customary methods (cf.
the preparation examples). -~

In most cases, the compounds result in the form of oils, some of which cannot be distilled without decomposing;
however, these oils can be freed of the remaining vola~
tile constituents, and in this way purified, by so-called ~incipient distillation~, i.e. by being heated for a relatively long time, under reduced pressure, at mode-rately elevated temperatures. They are characterized on `-the basis of their refractive indices. `-The efficacy of the compounds of the formula (I) in the treatment and prevention of disorders of cerebral function is verified using an animal model which is based on spatial memory. In this test, originally described by Morris (R.G.M. Morris, J. Neurosci. Methods 11: 47-60, 1984), rats have to learn to locate a platform which they cannot see and which represents the only possible route of escape from a pool of water. For this, the animals (young, adult male rats, approximately 3 months old) are . ': ~:
TP 102 - 9 - ~

21~8331 given 4 training runs a day over a period of 3 days. The latency to locate the platform, and the distance covered, are the parameters which are measured.
As training progresses, both the escape latency and the distance swum diminish as the result of the acquisition of a strategy for spatially locating the goal. The effect of test substances in improving cognitive power is manifested in an acceleration of the time required for the learning process, i.e. the learning curve becomes steeper. Test substances are administered once a day (60 min prior to the first training run). Control animals receive an equivalent quantity of the vehicle.
":
At the end of the training phase, i.e. once the 12th training run has been completed, the platform is taken out of the water and it is investigated, in a further swimming experiment, whether the experimental animals look for the platfoxm in a defined naxrow area around the training position of the platform (retention test). - -~-The test results demonstrate that the described compounds have a positive influence both on the learning behaviour of the animals and on the retention of that which has been learnt. The esters described can, therefore, be used both for the therapeutic and the preventive treatment of cognitive disturbances in general, and of dementias of the Alzheimer type in particular.

The efficacy of the compounds of the formula (I) in the ~- -treatment and prevention of depressions is verified using '' ~
' ~ ~:

. ~' the "Rat Forced Swimming Test". This behavioural model was described for the first time by Porsolt et al. (R.D.
Porsolt, M. Le Pichon, M. Jalfre, Nature 266: ~30-732, 1977), and is nowadays a generally recognized in-vivo screening model for identifying novel antidepressants. It is based on the observation that, in a situation where there is no escape, rats persist in an immobile attitude ("behavioural despair"). In a pretest session, young adult rats (3-4 months old) are placed individually for 20 min in glass cylinders (height 40 cm, diameter 20 cm) which are filled with water to a height of 15 cm.
24 h after this pretest session , the animals are once again transferred into the cylinders and the duration of immobility is measured over a period of 5 min. The described esters are administered in the time interval between the two swimming sessions . Controls are given the vehicle.

In an analogous manner to clinically active antidepres~
sants described in the literature, the compounds of the formula (I) decrease the duration of immobility and lead to behavioural activation. On the basis of these results, the tescribed compounds are also suitable for use in the treatment of emotional disturbances, in particular of depression.

I . -: ~ . .:
~: . , :, , ,:,:

' ~ : ' :, TP 102 - ll -~: - :' ~---............................. . .
. .

2 1 3 8 3 ~

Te s t r e s u l t s ~

Il/C;~13 R, ~ N
R3 N C4H9-t . ._ .. . ~ . = ED o . ~ cn or~lly acti ve doses, .
~atForced given.orally . . .___ . Swim Test Mo~rts Ma7e . . --CH~ -OCH7 0.11 mg/kg 0.~1 mgll~g_ -C~Hc -OCHl 3.0 m~g 30 mg/kg -CH~ -CHl 0.24 mg~C~ 0.14.3 mg/l~g -C2H5 OC4Hg-n 0.17 mg/~g 0.1 mgll~g -CH3 ~C3Hrn 0.015 mg/k~5 not tested .... _ _ ..... . _ . l -C~H~ ~C3Hrn 0.014 mg/~g ~
-__ ~
-OCH3 -OCH3 0.55 mg/kg1-3 mg/kg -OCH3 -OC2H5 2.3 mglkg not~¦
-OCH3 -OC3H7 1.3 mg/kg 1-3 n~g/kg : -~ . " ~ . ~ . _ _ ,: , ': ' The invention likewise embraces pharmaceutical : -compositions which contain an effective quantity of the ;- .
said compounds, and the preparation and use of these : ~ :::
5 compositions for treating and preventing the abovemen~
tioned diseases.

The novel active compounds may be .converted in a known . ::
manner, into the customary formulations, such as tablets, .. ~
': ::

,, ~

~ ;~: TP 102 - 12 ~

.. .. .' ~ .

., . . ,, . ., ~, . . . .

2138331 ~:

coated tablets, pills, granules, aerosols, syrups, emulsions, suspensions and solutions using inërt, non~
toxic, pharmaceutically suitable carrier substances or solvents. In this context, the therapeutically active 5 compound should in each case be present in a concen- ~ s tration range of approximately 0.5 to 90% by weight of the total mixture, i.e. in quantities which are sufficient to provide the given dosage scope.

The formulations are prepared, for example, by extending 10 the active compounds with solvents and/or carrier sub-stances, where appropriate ùsing emulsifying agents -~
and/or dispersing agents, it being possible, for example when using water as a diluent, to use organic solvents or `solubilizing agents where this is appropriate.

15 Administration is effected in a customary manner, prefer-ably orally or parenterally, in particular perlingually or intravenously. Transdermal administration is also possible, for example using a plaster.
. . ~
When the parenteral route is used, solutions of the 20 active compound can be employed which make use of suit- -able carrier materials.

In general, it has been found to be advantageous to administer quantities of about 0.001 to 1 mg/kg, preferably 0.01 to 0.5 mg/kg, of body weight in order to achieve effective results in the case of intravenous administration, while, in the case of oral ":-. : .' ' . '' ':

21~8331 ~: ~
. , . . ~

administra~ion, the dosage is about 0.01 to 20 mg/kg, preferahly 0.1 to 10 mg/kg, of body weight. ;~
Despite this, it can, where appropriate, be necessary to deviate from the said quantities, depending on the body weight and the nature of the route of admlnistration, on the individual reaction to the medicament, on the nature of its formulation and on the time or interval at which administration -is effected. Thus, in some cases, it can be sufficient to administer less than the abovementioned lowest quantity while, in other cases, the said upper limit has to be exceeded. Where relatiyely large quantities are being administered, it can be advisable to divide these into several smaller doses given over -~ --the course of the day.
The invention also extends to a commercial package containing, as active pharmaceutical ingredient, a compound of the invention, together with instructions for its use for the treatment of diseases of the cognitlve function and depression.

' ' 2 1 3 8 ~ 3 i . .. ~
Preparation examples~

~xample 1 Il /OCH3 ; ~ ~ ~
O--P ~
~N CH3 CH30N~C4H9-tert. , .,- -7.3 g (0.05 mol) of thionomethanephosphonoyl chloride methyl ester are added, at 20C and while stirring, to a mixture of 9.1 g (0.05 mol) of 4-hydroxy-6-methoxy-2 tert-butyl-pyrimidine (preparation, see EP 279 259), 10.3 g (0.075 mol) of potassium carbonate and 80 ml of acetonitrile. The reaction mixture is subsequently ~tirred at 20C for 15 hours and the solvent i8 then distilled off in vacuo. The residue is taken up in 100 ml of methyl tert-butyl ether, and this mixture is washed twice with 50 ml of water on each occasion, dried with sodium sulphate and filtered. The ~olvent i~ distilled off from the filtrate in vacuo at approximately 50C.
., ~
7.7 g (53% of theory) of 0-(6-methoxy-2-tert-butyl~
pyrimidin-4-yl)-0-methyl-thionomethanephosphonic acid diester are obtained as an oily residue having a refractive index n23 of 1.5121.

~''-'' ~'~.:-' ` 213~3~1 -,~

Example 2~
II ~OCH3 ,~ C2Hs n-C4Hg-O N~C4Hg~tert.

6.85 g (0.05 mol) of n-butyl bromide are added, at 20C
and while stirring, to a mixture of 11.6 g (0.04 mol) of 0-(6-hydroxy-2-tert-butyl-pyrimidin-4-yl)-0-methyl-thionoethanephosphonic acid diester (preparation, seeBP 279 259~, 6.9 g (0.05 mol) of potassium carbonate and ml of acetonitrile. The reaction mixture is subsequently stirred at 20C for 15 hours and the solvent is then distilled off in vacuo. The residue is taken up in 100 ml of methyl tert-butyl ether, and this mixture i5 washed once with 50 ml of a 5 percent solution of sodium hydroxide and once with 50 ml of water, dried with sodium sulphate and filtered. The solvent is distilled from the filtrate in vacuo at approximately 50C.

6.55 g (47% of theory) of 0-(6-n-butyloxy-2-tert-butyl~
pyrimidin-4-yl)-0-methyl-thionoethanephosphonic acid diester are obtained as an oily residue having a refrac~
tive index n25 of 1.4961.

: :

`~ .`

The following compounds of the formula Il~OR
4~ P~R~

R3~NJ~R2 ;, l .. ,.~__ ___ EL R Rl R2 R3 R' X Rd~ve -~
N~ . (~rc I _ _ "~
1 3 CH3 CH3 L-C~Hg ~H3 H S 15092/27 . . ~ ~ ~
4 CH3 n C3H7 L-C4H9 OCH~ H S 15042/23 S CH3 CH3 i-C3H7 -CH3 H S
6 CH3 CH3 ~ C~H~ ~ H S 1.5058/20 7 CH~ C~ ~ C4Hs OC~H7~) H S 1.5028/20 ~ ;
8 CH3 CH3 t.-C~T{9 -OC~H7(n) H S 1.5032/20 : ~
_ ... . : -, .::-:
9 CH3 C~3 ~ C~H9 -OC4~(n) H S 1.4987/23 are obtained in analogy with ~xample 1 -. -:
~ . ': :, : '~ . .;

-: ~

, ~ ~ - .. ..
:- -: -:. :.

. :: ~;

21~8~

Preparation examples:

~xample_10 Il ~OCH3 O-P~ .
,~ OCH3 CH30 NJ\C4Hg-tert. ;; ~ ~;

16 g (0.1 mol) of thionophosphoryl chloride dimethyl ester are added, at 20C and while stirringr to a mixture of 18.2 g (0.10 mol) of 4-hydroxy-6-methoxy-2-tert-butyl-pyrimidine, 20.8 g (0.15 mol) of potassium carbonate and ` ~ ~`
80 ml of acetonitrile. The reaction mixture i~ subse-guently ~tirred at 20C for 15 hours and the solvent i8 then di6tilled off in vacuo. The re~idue is taken up in 100 ml of toluene and this mixture is washed twice with 100 ml of water on each occasion, dried with sodium sulphate and filtered. The solvent is distilled off from the filtrate in vacuo at approximately 50C. The residue is freed of volatile constituents at 70C under high vacuum.

27.6 g (90% of theory) of 0-(6-methoxy-2-tert-butyl~
pyrimidin-4-yl)-0,0-dimethyl-thionophosphoric acid triester are obtained as an oily residue having a refrac~
tive index n2' of 1.5069. ;~

.
;~ TP_102 - 18 -, ,'. .:

21383~
:.

The following compounds of the ~ormula Il OR - ~ ;
O--P~
R4~N OR

R~ R Rl R~ ~3R~ X _ _ C~l, CH, --~¦ C13, H S

12 CH3 Cll, C4Hg~ C,ll,O _ S lA970/20 13 CH3 CH3 C~Hg t st. Il-C3H,0 H S lA9~6/20 i ~ .
14 CH3 C~3 C~H9 t~rL Il-C~H90 H S
L~
_ _ _ . ., .. ,.,.,. :_ __ ::

are obtained in analogy with Example 1 . ~ ~ . . - ,.
,: "

. :.- -:. -.:: ~ -:
: ~' ' . ' - ' .;~-..~,..- ~.,:' :~ TP 102 - 19 - ~

Claims (12)

1. Use of phosphoric acid esters and phosphonic acid esters of the general formula (I) (I) in which R - represents straight-chain or branched alkyl having up to 6 carbon atoms, R1 - represents straight-chain or branched alkyl or alkoxy having up to 6 carbon atoms, R2 - represents hydrogen, or represents straight-chain or branched alkyl, alkoxy or alkylthio having up to 6 carbon atoms, or represents dialkylamino having up to 4 carbon atoms in each alkyl group, or represents cycloalkyl having from 3 to 7 carbon atoms, R3 - represents straight-chain or branched alkoxy or alkyl having up to 6 carbon atoms which can be substituted by alkoxy having up to 4 carbon atoms, or represents hydrogen, R4 - represents halogen, hydrogen or straight-chain or branched alkyl or alkoxy having up to 4 carbon atoms, and X - denotes oxygen or sulphur, and their physiologically tolerated salts, as well as their isomers, for the treatment and prevention of disorders of cognitive function and of de-pressions.
2. Use according to Claim 1, where, in the general formula, R represents straight-chain or branched alkyl having up to 4 carbon atoms, R1 represents straight-chain or branched alkyl or alkoxy having up to 4 carbon atoms, R2 represents hydrogen, or represents straight-chain or branched alkyl or alkoxy having up to 4 carbon atoms, or represents dialkylamino having in each case up to 3 carbon atoms in each alkyl group, or represents cycloalkyl having from 3 to 6 carbon atoms, R3 represents straight-chain or branched alkyl or alkoxy having up to 4 carbon atoms, or repre-sents methoxymethyl, or represents hydrogen, R4 represents hydrogen or methoxy, and X represents sulphur, and salts thereof.
3. Use according to Claim 1, where, in the general formula, R . represents methyl, R1 represents methyl, ethyl, propyl or methoxy, R2 represents cyclopropyl, methyl, ethyl, iso-propyl, tert-butyl, or represents methoxy or ethoxy, or represents dimethylamino, R3 represents methyl, ethyl, alkoxy having up to
4 carbon atoms or methoxymethyl, R4 represents hydrogen or methoxy, and salts thereof.

4. Phosphoric acid esters and phosphonic acid esters of the group 0-(6-Methoxy-2-tert-butyl-pyrimidin-4-yl)-0-methyl-thionomethanephosphonic acid diester, 0-(6-n-Butyloxy-2-tert-butyl-pyrimidin-4-yl)-0-methyl-thionoethanephosphonic acid diester, 0-(6-Methyl-2-tert-butyl-pyrimidin-4-yl)-0-methyl-thionomethanephosphonic acid diester, 0-(6-Methoxy-2-tert-butyl-pyrimidin-4-yl)-0-methyl-thionopropanephosphonic acid diester, 0-(6-Methyl-2-isopropyl-pyrimidin-4-yl)-0-methyl-thionomethanephosphonic acid diester, 0-(6-Ethoxy-2-tert-butyl-pyrimidin-4-yl)-0-methyl-thionomethanephosphonic acid diester, 0-(6-Propoxy-2-tert-butyl-pyrimidin-4-yl)-0-methyl-thionoethanephosphonic acid diester, 0-(6-Propoxy-2-tert-butyl-pyrimidin-4-yl)-0-methyl-thionomethanephosphonic acid diester, 0-(6-Butoxy-2-tert-butyl-pyrimidin-4-yl)-0-methyl-thionomethanephosphonic acid diester, 0-(6-Methyl-2-cyclopropyl-pyrimidin-4-yl)-0,0-dimethyl-thionophosphoric acid triester, 0-(6-Methoxy-2-tert-butyl-pyrimidino4-yl)-0,0-dimethyl-thionophosphoric acid triester, 0-(6-Ethoxy-2-tert-butyl-pyrimidin-4-yl)-0,0-dimethyl-thionophosphoric acid triester, 0-(6-Propoxy-2-tert-butyl-pyrimidin-4-yl)-0,0-dimethyl-thionophosphoric acid triester, 0-(6-Butoxy-2-tert-butyl-pyrimidin-4-yl)-0,0-dimethyl-thionophosphoric acid triester, 0-(6-Propoxy-2-cyclopropyl-pyrimidin-4-yl)-0,0-dimethyl-thionophosphoric acid triester, 0-(5-Methoxy-2-tert-butyl-pyrimidin-4-yl)-0,0-dimethyl-thionophosphoric acid triester.
5. Medicaments containing the phosphoric acid esters and phosphonic acid esters according to Claim 4.
6. Phosphoric acid esters and phosphonic acid esters according to Claim 4 for the treatment of diseases.
7. Process for preparing phosphoric acid esters and phosphonic acid esters according to Claim 4, charac-terized in that the relevant phosphoryl halides or phosphonoyl halides are reacted with the corres-ponding 4-hydroxy-pyrimidines, optionally in the presence of acid-binding agents or optionally in the form of alkali metal, alkaline earth metal or ammonium salts, and optionally in the presence of a solvent.
8. A pharmaceutical composition for the treatment and prevention of disorders of cognitive function and of depression, which composition comprises a phosphonic acid ester or phosphonic acid ester as defined in any one of claims 1 to 4, or a physiologically tolerated salt or isomer thereof, together with a suitable diluent or carrier.
9. A process for preparing a pharmaceutical composition for the treatment and prevention of disorders of cognitive function and of depression, which process comprises admixing a phosphonic acid ester or phosphonic acid ester as defined in any one of claims 1 to 4, or a physiologically tolerated salt or isomer thereof, with a suitable diluent or carrier.
10. Use of a phosphonic acid ester or phosphonic acid ester as defined in any one of claims 1 to 4, or a physiologically tolerated salt or isomer thereof, for the treatment and prevention of diseases of cognitive function and depression.
11. Phosphonic acid esters and phosphonic acid esters as defined in any one of claims 1 to 4, and the physiologically tolerated salts and isomers thereof, for the treatment and prevention of diseases of cognitive function and depression.
12. A commercial package containing, as active pharmaceutical ingredient, a phosphonic acid ester or phosphonic acid ester as defined in any one of claims 1 to 4, or a physiologically tolerated salt or isomer thereof, together with instructions for its use for the treatment of diseases of cognitive function and depression.
CA002138331A 1993-12-21 1994-12-16 Use of phosphoric acid esters and phosphonic acid esters for treating disorders of cognitive function and depressions Abandoned CA2138331A1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE4343599A DE4343599A1 (en) 1993-12-21 1993-12-21 Use of new and known pyrimidyl phosphonate ester and thio-ester cpds.
DE4343600A DE4343600A1 (en) 1993-12-21 1993-12-21 Use of new and known phosphate ester(s)
DEP4343599.8 1993-12-21
DEP4343600.5 1993-12-21

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DE19736539A1 (en) * 1997-08-22 1999-02-25 Bayer Ag Use of cycloalkyl-substituted phosphonic acid ester(s) for treating cognitive and affective disorders
JP6557020B2 (en) * 2014-02-14 2019-08-07 ステラケミファ株式会社 Method for producing phosphoric acid diester salt and method for producing phosphoric acid diester

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DK130683B (en) * 1971-03-04 1975-03-24 Sandoz Ag Pesticidally active pyrimidinylphosphoric acid esters.
US4012506A (en) * 1975-07-03 1977-03-15 Ciba-Geigy Corporation Pyrimidyl thio- and dithio-phosphoric acid esters
DE2642981C2 (en) * 1976-09-24 1984-11-08 Bayer Ag, 5090 Leverkusen Alkoxy-substituted pyrimidinyl-thionophosphonic acid esters, process for their preparation and their use as insecticides and acaricides
DE3704689A1 (en) * 1987-02-14 1988-08-25 Bayer Ag THIONOPHOSPHONIC ACID ESTER
DE3729264A1 (en) * 1987-09-02 1989-03-23 Bayer Ag PYRIMIDINYL (THIONO) (THIOL) PHOSPHORIC ACID ESTER
US4950658A (en) * 1988-12-06 1990-08-21 Board Of Trustees Of Southern Illinois Univ. Method of medical treatment of Alzheimer's disease

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