US3635980A - N n'-bishalomethyl phenobarbital compounds - Google Patents
N n'-bishalomethyl phenobarbital compounds Download PDFInfo
- Publication number
- US3635980A US3635980A US804292A US3635980DA US3635980A US 3635980 A US3635980 A US 3635980A US 804292 A US804292 A US 804292A US 3635980D A US3635980D A US 3635980DA US 3635980 A US3635980 A US 3635980A
- Authority
- US
- United States
- Prior art keywords
- phenobarbital
- compounds
- bishalomethyl
- hours
- phenyl
- 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.)
- Expired - Lifetime
Links
- DDBREPKUVSBGFI-UHFFFAOYSA-N phenobarbital Chemical class C=1C=CC=CC=1C1(CC)C(=O)NC(=O)NC1=O DDBREPKUVSBGFI-UHFFFAOYSA-N 0.000 title abstract description 31
- 229960002695 phenobarbital Drugs 0.000 abstract description 28
- 229910052757 nitrogen Inorganic materials 0.000 abstract description 25
- 239000001961 anticonvulsive agent Substances 0.000 abstract description 10
- 239000000203 mixture Substances 0.000 abstract description 10
- 229940125681 anticonvulsant agent Drugs 0.000 abstract description 5
- 230000001225 therapeutic effect Effects 0.000 abstract description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 16
- 150000001875 compounds Chemical class 0.000 description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 14
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 12
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 12
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 12
- 150000003951 lactams Chemical class 0.000 description 9
- 239000000243 solution Substances 0.000 description 9
- 238000003756 stirring Methods 0.000 description 9
- 239000000725 suspension Substances 0.000 description 9
- 239000000047 product Substances 0.000 description 8
- 238000009835 boiling Methods 0.000 description 7
- 239000011541 reaction mixture Substances 0.000 description 7
- 229910052799 carbon Inorganic materials 0.000 description 6
- 239000000460 chlorine Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 238000001914 filtration Methods 0.000 description 6
- 239000001257 hydrogen Substances 0.000 description 6
- 229910052739 hydrogen Inorganic materials 0.000 description 6
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 6
- 241001465754 Metazoa Species 0.000 description 5
- CWRVKFFCRWGWCS-UHFFFAOYSA-N Pentrazole Chemical compound C1CCCCC2=NN=NN21 CWRVKFFCRWGWCS-UHFFFAOYSA-N 0.000 description 5
- 230000001773 anti-convulsant effect Effects 0.000 description 5
- 229960003965 antiepileptics Drugs 0.000 description 5
- 239000012043 crude product Substances 0.000 description 5
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 4
- 206010010904 Convulsion Diseases 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 230000000147 hypnotic effect Effects 0.000 description 4
- 238000002844 melting Methods 0.000 description 4
- 230000008018 melting Effects 0.000 description 4
- 239000002244 precipitate Substances 0.000 description 4
- 239000011343 solid material Substances 0.000 description 4
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 description 3
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 3
- 229940125717 barbiturate Drugs 0.000 description 3
- HNYOPLTXPVRDBG-UHFFFAOYSA-N barbituric acid Chemical class O=C1CC(=O)NC(=O)N1 HNYOPLTXPVRDBG-UHFFFAOYSA-N 0.000 description 3
- 239000013078 crystal Substances 0.000 description 3
- 238000000921 elemental analysis Methods 0.000 description 3
- 239000012456 homogeneous solution Substances 0.000 description 3
- 238000002329 infrared spectrum Methods 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 238000005406 washing Methods 0.000 description 3
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 2
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 description 2
- 229910021627 Tin(IV) chloride Inorganic materials 0.000 description 2
- WETWJCDKMRHUPV-UHFFFAOYSA-N acetyl chloride Chemical compound CC(Cl)=O WETWJCDKMRHUPV-UHFFFAOYSA-N 0.000 description 2
- 239000012346 acetyl chloride Substances 0.000 description 2
- PASDCCFISLVPSO-UHFFFAOYSA-N benzoyl chloride Chemical compound ClC(=O)C1=CC=CC=C1 PASDCCFISLVPSO-UHFFFAOYSA-N 0.000 description 2
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 description 2
- 229910052794 bromium Inorganic materials 0.000 description 2
- 229910052801 chlorine Inorganic materials 0.000 description 2
- 230000002566 clonic effect Effects 0.000 description 2
- 229910052731 fluorine Inorganic materials 0.000 description 2
- 239000011737 fluorine Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000000144 pharmacologic effect Effects 0.000 description 2
- -1 phenobarbital compound Chemical class 0.000 description 2
- 229940096017 silver fluoride Drugs 0.000 description 2
- REYHXKZHIMGNSE-UHFFFAOYSA-M silver monofluoride Chemical compound [F-].[Ag+] REYHXKZHIMGNSE-UHFFFAOYSA-M 0.000 description 2
- HPGGPRDJHPYFRM-UHFFFAOYSA-J tin(iv) chloride Chemical compound Cl[Sn](Cl)(Cl)Cl HPGGPRDJHPYFRM-UHFFFAOYSA-J 0.000 description 2
- 241000220479 Acacia Species 0.000 description 1
- CPELXLSAUQHCOX-UHFFFAOYSA-M Bromide Chemical compound [Br-] CPELXLSAUQHCOX-UHFFFAOYSA-M 0.000 description 1
- 125000006414 CCl Chemical group ClC* 0.000 description 1
- XJUZRXYOEPSWMB-UHFFFAOYSA-N Chloromethyl methyl ether Chemical compound COCCl XJUZRXYOEPSWMB-UHFFFAOYSA-N 0.000 description 1
- 235000010643 Leucaena leucocephala Nutrition 0.000 description 1
- 241000699670 Mus sp. Species 0.000 description 1
- 229910021623 Tin(IV) bromide Inorganic materials 0.000 description 1
- FXXACINHVKSMDR-UHFFFAOYSA-N acetyl bromide Chemical compound CC(Br)=O FXXACINHVKSMDR-UHFFFAOYSA-N 0.000 description 1
- 239000011149 active material Substances 0.000 description 1
- 239000013543 active substance Substances 0.000 description 1
- 231100000460 acute oral toxicity Toxicity 0.000 description 1
- 150000001266 acyl halides Chemical class 0.000 description 1
- 230000037396 body weight Effects 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 229940061627 chloromethyl methyl ether Drugs 0.000 description 1
- 230000036461 convulsion Effects 0.000 description 1
- 230000002920 convulsive effect Effects 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- 239000002552 dosage form Substances 0.000 description 1
- 206010015037 epilepsy Diseases 0.000 description 1
- 239000012065 filter cake Substances 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 239000000644 isotonic solution Substances 0.000 description 1
- 231100000636 lethal dose Toxicity 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229940021222 peritoneal dialysis isotonic solution Drugs 0.000 description 1
- 229960002511 phenobarbital sodium Drugs 0.000 description 1
- WRLGYAWRGXKSKG-UHFFFAOYSA-M phenobarbital sodium Chemical compound [Na+].C=1C=CC=CC=1C1(CC)C(=O)NC([O-])=NC1=O WRLGYAWRGXKSKG-UHFFFAOYSA-M 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 230000028527 righting reflex Effects 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 239000006188 syrup Substances 0.000 description 1
- 235000020357 syrup Nutrition 0.000 description 1
- 239000003826 tablet Substances 0.000 description 1
- LTSUHJWLSNQKIP-UHFFFAOYSA-J tin(iv) bromide Chemical compound Br[Sn](Br)(Br)Br LTSUHJWLSNQKIP-UHFFFAOYSA-J 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D239/00—Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings
- C07D239/02—Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings not condensed with other rings
- C07D239/24—Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings not condensed with other rings having three or more double bonds between ring members or between ring members and non-ring members
- C07D239/28—Heterocyclic compounds containing 1,3-diazine or hydrogenated 1,3-diazine rings not condensed with other rings having three or more double bonds between ring members or between ring members and non-ring members with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, directly attached to ring carbon atoms
- C07D239/46—Two or more oxygen, sulphur or nitrogen atoms
- C07D239/60—Three or more oxygen or sulfur atoms
- C07D239/62—Barbituric acids
Definitions
- This invention relates to new chemical compounds and to the use of these compounds as anticonvulsant agents for treating convulsions and seizures in warm blooded animals.
- Phenobarbital has long been known to be useful as an anticonvulsant agent in warm blooded animals, having been employed in the treatment of epilepsy; however, it suffers from the disadvantage that it exhibits hypnotic activity as well as anticonvulsant activity. It has now been found that N,N-bishalomethyl phenobarbital compounds are effective anticonvulsants which possess unexpected advantages from the pharmacological standpoint over phenobarbital itself in that they are completely devoid of hypnotic effect, among other things.
- the N,N'-bishalomethyl phenobarbital compounds of the present invention include N,N'-bischloromethyl phenobarbital, N,N-bisbromomethyl phenobarbital, and N,N-difluoromethyl phenobarbital.
- the compounds may be made by first preparing N,N'- bismethoxymethyl phenobarbital, then reacting it with an acyl halide such as acetyl chloride or bromide, benzoyl chloride, etc.
- the N,N'-bisfluoromethyl phenobarbital compound may be prepared by reacting the N,N'-bisbromomethyl phenobarbital compound with silver fluoride.
- the compounds of the invention may be formulated with conventional physiologically acceptable vehicles and carriers to make syrups, isotonic solutions, tablets, and other dosage forms. Toxicity and effectiveness of the compounds are such that each dosage unit may contain from 10 to 500 mg. of active material.
- mice All tests were conducted on adult albino male mice (Charles River strain); the dosage consisted of the active agent suspended in 10% aqueous acacia and was administered orally.
- Acute oral toxicity was determined in the conventional manner. In the case of each compound the dose required to produce death in 50% of the animals treated (LD' was greater than 500 mg. per kilogram of body weight.
- Hypnotic activity or depression of the central nervous 3,035,980 Patented Jan. 18, 1972 system as indicated by loss of the righting reflex (onset of sleep) was not produced by any dosage of any of the compounds of the present invention less than a lethal dose.
- Phenobarbital itself did exhibit hypnotic activity using the foregoing criterion.
- EXAMPLE 1 In a 1000 ml. flask equipped with a stirrer and condenser, 136.4 g. (0.536 mole) of phenobarbital sodium powder was suspended in 500 ml. of dimethylformamide. The flask was placed in an ice bath. To the cold suspension was added g. (1.25 mole) of chloromethylmethyl ether over a period of one hour. The resulting suspension was stirred at room temperature for twenty hours, then poured into 2000 ml. of a mixture of ice and water and the resulting suspension was stirred for two hours. The crude product was removed by filtration, and washed three times with 100 ml. of distilled water, then dissolved in about 500 ml. of hot ethanol.
- the effective dose (ED the minimum dose effective in 50% of the animals) was 28 mg./kg., determined graphically, the 95% limits being 19.9-39.5.
- the time of peak activity was determined to be approximately two hours after the dosage, and the foregoing determination of effectiveness was made at that time.
- EXAMPLE 2 There was suspended in 10.9 g. (0.078 mole) of benzoyl chloride 4.4 g. (0.0138 mole) of N,N'-bismethoxymethyl phenobarbital. To the suspension was added slowly 0.2 ml. of anhydrous stannic chloride and the reaction mixture was stirred at room temperature. After about one hour of stirring, the mixture became a homogeneous solution, and after about sixty-five hours a solid material began to precipitate. After stirring had been continued for a total of seventy-two hours, ml.
- EXAMPLE 3 There was suspended in 365 g. (2.8 moles) of acetyl bromide 160 g. (0.5 mole) of N,N-bismethoxymethyl phenobarbital. This suspension was stirred at room temperature and there was added to it slowly over a period of ten minutes 4 g. of anhydrous stannic bromide. The suspension was heated to a temperature of 55 C. with stirring, whereupon the suspension became a homogeneous solution, and stirring was continued while maintaining the mixture at that temperature. After about seventy hours, a solid material began to precipitate. When the stirring had continued for a total of one-hundred-ten hours, the reaction mixture was poured into 3 kg.
- the infrared spectrum of the product exhibited the following peaks, inter alia: 3085 (phenyl), 1770 (lactam), 1718 (lactam), 1695 (lactam), 1600 (phenyl), 1176 (1,3,5,5-tetrasubstituted barbiturate), 764 (phenyl), 702 (phenyl), 619 (CBr) cm.-
- the compound exhibited anticonvulsant activity against Metrazol, having a time of peak activity approximately one hour after administration of the dose.
- the effective dose (ED was found to be 27 mg./kg., virtually identical with that of the compound of Example 1.
- EXAMPLE 4 There was dissolved in ml. of acetonitrile 4.2 g. (0.01 mole) of the N,N-bisbromomethyl phenobarbital produced in Example 3. To the solution was added 5.1 g. (0.04 mole) of silver fluoride, and the mixture was stirred at reflux temperature for twenty hours, after which the hot solution was filtered through a Buchner funnel containing a compacted layer of finely-divided diatomaceous silica, the filtrate being passed directly into 1 kg. of a mixture of ice and water. An oily precipitate formed which solidified when allowed to stand overnight. The solid precipitate was separated from the reaction mixture by filtration, washed with water, and dried at 40 C. at reduced pressure.
- the infrared spectrum of the product exhibited the following peaks, inter alia: 3060 (phenyl), 1776 (lactam), 1718 (lactam), 1701 (lactam), 1597 (phenyl), 1170 (l,3,5,5-tetra-substituted barbiturate), 1000 (CtF), 764 (phenyl), 702 (phenyl cm.-
- the product exhibited the same pharmacological properties as the compounds of the preceding examples.
- the time of peak anti-convulsant activity against Metrazol was two hours and the effective dose ('ED was about 100 mg./kg.
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
Abstract
Description
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US80429269A | 1969-03-04 | 1969-03-04 |
Publications (1)
Publication Number | Publication Date |
---|---|
US3635980A true US3635980A (en) | 1972-01-18 |
Family
ID=25188630
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US804292A Expired - Lifetime US3635980A (en) | 1969-03-04 | 1969-03-04 | N n'-bishalomethyl phenobarbital compounds |
Country Status (1)
Country | Link |
---|---|
US (1) | US3635980A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3900475A (en) * | 1972-06-26 | 1975-08-19 | Kendall & Co | Certain phenobarbital salts |
US3947443A (en) * | 1974-05-17 | 1976-03-30 | The Kendall Company | Process for preparing 1,3-bis(halomethyl)phenobarbitals |
US4029662A (en) * | 1976-04-30 | 1977-06-14 | Bristol-Myers Company | Method of making barbituric acid derivatives |
-
1969
- 1969-03-04 US US804292A patent/US3635980A/en not_active Expired - Lifetime
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3900475A (en) * | 1972-06-26 | 1975-08-19 | Kendall & Co | Certain phenobarbital salts |
US3947443A (en) * | 1974-05-17 | 1976-03-30 | The Kendall Company | Process for preparing 1,3-bis(halomethyl)phenobarbitals |
US4029662A (en) * | 1976-04-30 | 1977-06-14 | Bristol-Myers Company | Method of making barbituric acid derivatives |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: COLGATE-PALMOLIVE COMPANY, A CORP. OF DE., NEW YO Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:BRISTOL-MYERS COMPANY;REEL/FRAME:003883/0144 Effective date: 19810701 Owner name: COLGATE-PALMOLIVE COMPANY, 300 PARK AVENUE, NEW YO Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:BRISTOL-MYERS COMPANY;REEL/FRAME:003883/0144 Effective date: 19810701 |
|
AS | Assignment |
Owner name: MANUFACTURERS HANOVER TRUST COMPANY, AS AGENT Free format text: SECURITY INTEREST;ASSIGNOR:KENDALL COMPANY, THE;REEL/FRAME:005251/0007 Effective date: 19881027 |