CH308142A - Process for the preparation of 4-acetylamino-1- (N- (3'-oxy-mercuri-2'-oxyethoxy-propyl-1 ') -carbamido) -2-phenoxyacetic acid. - Google Patents
Process for the preparation of 4-acetylamino-1- (N- (3'-oxy-mercuri-2'-oxyethoxy-propyl-1 ') -carbamido) -2-phenoxyacetic acid.Info
- Publication number
- CH308142A CH308142A CH308142DA CH308142A CH 308142 A CH308142 A CH 308142A CH 308142D A CH308142D A CH 308142DA CH 308142 A CH308142 A CH 308142A
- Authority
- CH
- Switzerland
- Prior art keywords
- acetylamino
- oxy
- carbamido
- acid
- phenoxyacetic acid
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 4
- 238000002360 preparation method Methods 0.000 title description 4
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 14
- 239000000243 solution Substances 0.000 claims description 14
- VVJKKWFAADXIJK-UHFFFAOYSA-N Allylamine Chemical compound NCC=C VVJKKWFAADXIJK-UHFFFAOYSA-N 0.000 claims description 10
- 150000001875 compounds Chemical class 0.000 claims description 7
- 239000007795 chemical reaction product Substances 0.000 claims description 5
- LCPDWSOZIOUXRV-UHFFFAOYSA-N phenoxyacetic acid Chemical compound OC(=O)COC1=CC=CC=C1 LCPDWSOZIOUXRV-UHFFFAOYSA-N 0.000 claims description 5
- 239000002934 diuretic Substances 0.000 claims description 4
- 238000002844 melting Methods 0.000 claims description 4
- 230000008018 melting Effects 0.000 claims description 4
- QVGLHVDBDYLFON-UHFFFAOYSA-M sodium;1,3-dimethylpurin-7-ide-2,6-dione Chemical compound [Na+].O=C1N(C)C(=O)N(C)C2=C1[N-]C=N2 QVGLHVDBDYLFON-UHFFFAOYSA-M 0.000 claims description 4
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 3
- FOCAUTSVDIKZOP-UHFFFAOYSA-N chloroacetic acid Chemical compound OC(=O)CCl FOCAUTSVDIKZOP-UHFFFAOYSA-N 0.000 claims description 3
- 229940106681 chloroacetic acid Drugs 0.000 claims description 3
- 159000000000 sodium salts Chemical class 0.000 claims description 3
- 239000007864 aqueous solution Substances 0.000 claims description 2
- 239000013078 crystal Substances 0.000 claims description 2
- 230000001882 diuretic effect Effects 0.000 claims description 2
- 150000003839 salts Chemical class 0.000 claims description 2
- WRYNUJYAXVDTCB-UHFFFAOYSA-M acetyloxymercury Chemical compound CC(=O)O[Hg] WRYNUJYAXVDTCB-UHFFFAOYSA-M 0.000 claims 1
- 238000005034 decoration Methods 0.000 claims 1
- -1 acyl radicals Chemical class 0.000 description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 10
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 9
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 9
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 4
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 4
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 description 4
- 150000002148 esters Chemical class 0.000 description 4
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 description 3
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 3
- QTBSBXVTEAMEQO-UHFFFAOYSA-N acetic acid Substances CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 description 3
- 229910052794 bromium Inorganic materials 0.000 description 3
- 239000000460 chlorine Substances 0.000 description 3
- 229910052801 chlorine Inorganic materials 0.000 description 3
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 3
- 229910052753 mercury Inorganic materials 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- AMQJEAYHLZJPGS-UHFFFAOYSA-N N-Pentanol Chemical compound CCCCCO AMQJEAYHLZJPGS-UHFFFAOYSA-N 0.000 description 2
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 2
- 229960000583 acetic acid Drugs 0.000 description 2
- 125000002777 acetyl group Chemical group [H]C([H])([H])C(*)=O 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 150000001298 alcohols Chemical class 0.000 description 2
- 125000001931 aliphatic group Chemical group 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- WERYXYBDKMZEQL-UHFFFAOYSA-N butane-1,4-diol Chemical compound OCCCCO WERYXYBDKMZEQL-UHFFFAOYSA-N 0.000 description 2
- 125000004063 butyryl group Chemical group O=C([*])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 2
- 229940030606 diuretics Drugs 0.000 description 2
- 150000003977 halocarboxylic acids Chemical class 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 description 2
- YPFDHNVEDLHUCE-UHFFFAOYSA-N propane-1,3-diol Chemical compound OCCCO YPFDHNVEDLHUCE-UHFFFAOYSA-N 0.000 description 2
- 125000001501 propionyl group Chemical group O=C([*])C([H])([H])C([H])([H])[H] 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- KUOQYPFFULQPMX-UHFFFAOYSA-N 2-hydroxybenzoic acid;mercury Chemical class [Hg].OC(=O)C1=CC=CC=C1O KUOQYPFFULQPMX-UHFFFAOYSA-N 0.000 description 1
- HKAGPQUVIAEHSO-UHFFFAOYSA-N 2-iodobutanoic acid Chemical compound CCC(I)C(O)=O HKAGPQUVIAEHSO-UHFFFAOYSA-N 0.000 description 1
- KZLYQYPURWXOEW-UHFFFAOYSA-N 2-iodopropanoic acid Chemical compound CC(I)C(O)=O KZLYQYPURWXOEW-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 150000001447 alkali salts Chemical class 0.000 description 1
- RMRFFCXPLWYOOY-UHFFFAOYSA-N allyl radical Chemical compound [CH2]C=C RMRFFCXPLWYOOY-UHFFFAOYSA-N 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 125000003236 benzoyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C(*)=O 0.000 description 1
- ABBZJHFBQXYTLU-UHFFFAOYSA-N but-3-enamide Chemical compound NC(=O)CC=C ABBZJHFBQXYTLU-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 150000001735 carboxylic acids Chemical class 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000012043 crude product Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 239000012362 glacial acetic acid Substances 0.000 description 1
- 235000011187 glycerol Nutrition 0.000 description 1
- 229940093915 gynecological organic acid Drugs 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
- JDNTWHVOXJZDSN-UHFFFAOYSA-N iodoacetic acid Chemical compound OC(=O)CI JDNTWHVOXJZDSN-UHFFFAOYSA-N 0.000 description 1
- 231100001231 less toxic Toxicity 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 150000002730 mercury Chemical class 0.000 description 1
- BRMYZIKAHFEUFJ-UHFFFAOYSA-L mercury diacetate Chemical compound CC(=O)O[Hg]OC(C)=O BRMYZIKAHFEUFJ-UHFFFAOYSA-L 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- 235000005985 organic acids Nutrition 0.000 description 1
- 230000020477 pH reduction Effects 0.000 description 1
- 150000002989 phenols Chemical class 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 150000003254 radicals Chemical class 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- YGSDEFSMJLZEOE-UHFFFAOYSA-N salicylic acid Chemical class OC(=O)C1=CC=CC=C1O YGSDEFSMJLZEOE-UHFFFAOYSA-N 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 150000005846 sugar alcohols Polymers 0.000 description 1
- 238000002560 therapeutic procedure Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F3/00—Compounds containing elements of Groups 2 or 12 of the Periodic Table
- C07F3/10—Mercury compounds
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
Verfahren zur Herstellung von 4-AcetyIamino-l-[N-(3'-oxy-mereuri-2'-oxyäthoxy-propyl-1')- earbamido]-2-phenoxyessigsäure. In dem modernen Arzneischatz nehmen die Diuretica einen breiten Raum ein. Es wer den meist quecksilberhaltige Präparate ver wendet und insbesondere haben die Derivate der Salicylsäure, wie z. B. das quecksilber- salieyl-allylamid-0-essigsaure Natrium grosse Bedeutung in der Therapie erlangt.
Es wurde nun gefunden, dass man zu stark wirksamen und wesentlich weniger gif tigen Präparaten als die oben erwähnten Quecksilbersalicylsäureverbindungen gelangt, wenn man am Stickstoff acylierte Ester -der p-Aminosalieylsäure mit Allylamin zu den entsprechenden Allylamiden umsetzt,
die 2-ständige Hydroxylgruppe mit Halogencar- bonsäuren in Gegenwart von Alkali veräthert und nun in den Allylrest Quecksilber in übli cher Weise einführt, z. B. durch Behandeln der Reaktionsprodukte mit Quecksilbersalzen organischer Säuren in Alkoholen oder Wasser.
Als am Stickstoff befindliche Acylreste kommen die Radikale aliphatischer, aromati scher und araliphatischer Carbonsäuren, wie z.
B. Acetyl, Propionyl, Butyryl, Cyclopentyl- propionyl, Benzoyl, Phenacetyl und andere, in Betracht.
Insbesondere ist die Verwendung von Verbindungen mit niederen aliphatisehen Acylresten, wie Acetyl, Propionyl und Buty- ryl, am Stickstoff angezeigt, da die Endpro dukte dann leichter in Wasser löslich sind.
Als Ester der p-Amino-salieylsäure sind sowohl die Ester mit aliphatischen wie aroma- tischen Alkoholen .oder Phenolen geeignet, je doch ist es zweckmässig, die Ester mit aliphar tischen Alkoholen, insbesondere mit niederen aliphatischen Alkoholen, wie Methanol, Ätha- nol, Propanol, Isopropanol, Butanol öder Amylalkohol, zu verwenden.
Als Halogencarbonsäuren kommen vor allem z. B. aliphatische Halogencarbonsäuren in Frage, insbesondere verwendet man zweck mässig niedere aliphatisehe Halogencarbon- säuren, wie Chlor-, Brom oder Jodessigsäure, Chlor-, Brom- oder Jodpropionsäure, Chlor-, Brom- oder Jodbuttersäure.
Für die bei der Merkurierung als Lösungs mittel dienenden Alkohole kommen ein- und mehrwertige Alkohole in Frage, wie beispiels weise Methanol, Äthanol, Propanol, Isopropa- nol, Butanol, Amylalkohol, Äthylenglylcol, 1,3- Propylenglykol, 1,2-Propylenglykol, 1,4-Bu- tandiol, Glycerin und ähnliche.
Besonders vorteilhaft ist die Verwendung der mehrwer tigen, niederen aliphatisehen Alkohole, weil dadurch die Verträglichkeit der Verbindun gen und ihre Wasserlöslichkeit bedeutend er höht werden.
Die erhaltenen Substanzen sind weisse, kristalline Verbbindungen. Die Alkalisalze lösen sich in Wasser mit schwach alkalischer Reaktion; die Lösungen können z: B. mit Theo- phyllin-Natrium gepuffert werden.
Die gemäss der Erfindung hergestellten Verbindungen sind stark wirksame Diuretica von guter Verträglichkeit, insbesondere zeigen die Oxyalkoxyreste enthaltenden Verbindun gen eine besonders gute Verträglichkeit und erhöhte Wasserlöslichkeit.
Gegenstand des Patentes ist nun ein Ver fahren zur Herstellung von 4-Acetylamino-l- [N - (3'-'- oxymereuri - 2'- oxyäthoxy-propyl-1') - carbamido]-2 phenoxyessigsäure, das dadurch gekennzeichnet ist, dass man 4-Acetylamino-2- oxy-benzoesäuremethylester mit Allylamin um setzt, das erhaltene 4-A:
cetylamino-2-oxy-benz- allylamid mittels Chloressigsäure veräthert und das Reaktionsprodukt in Gegenwart von Äthylenglykol mit Mereuriacetat umsetzt.
Die so erhaltene 4-Acetylamino-l-[N-(3'-oxy- mercuri- 2'-oxyäthoxy-propyl,-1')@carbamido]- 2-phenoxyessigsäure fällt in Form farbloser Kristalle mit dem Schmelzpunkt 194 an und ist in verdünnter Sodalösung sowie in Alka- lien löslich.
Die Verbindung kann insbeson dere in Form des Natriumsalzes und in Form der mit Theophyllin-Natrium gepufferten wässrigen Lösung dieses Salzes als wirksames Diuretieum mit guter Verträglichkeit ver wendet werden.
<I>Beispiel:</I> 17 g 4-Acetylamino-2-oxy-benzoesäure-me- thylester werden im Bombenrohr mit 11 em3 Allylamin 7 Stunden auf 105 erhitzt. Der Inhalt des Rohres wird mit Aceton aufgenom men, das Lösungsmittel einschliesslich über schüssigem Allylamins abdestilliert und der Rückstand aus Aceton umkristallisiert. Das so erhaltene 4-Acetylamino-2-oxy-benzallylamid schmilzt bei 218 (unkorr.).
14,05 g dieses Produktes werden in 80 eins Wasser reit 7 ein-3 33 0/mige Natronlauge in Lösung gebracht und zu dieser Lösung bei -I- 5 portionsweise 12,4 g Chloressigsäure und 11 cm3 33 "/oige Natronlauge so zugegeben, dass die Lösung stets phenolphthaleinalkalisch bleibt. Am Schluss gibt man nochmals 5 em3 33 1/oige Natronlauge nach, wobei der pH-Wert auf 12,5 ansteigt.
Nun wird 2 Stunden im Wasserbad erhitzt, wobei das pg auf den Neu tralpunkt absinkt und das Reaktionsprodukt teilweise ausfällt. Man- verdünnt mit Wasser und gewinnt durch Ansäuern mit konzentrier- ter Salzsäure die 4-Acetylamino-1-(N allyl- carbamido-)Lphenoxyessigsäure-2 als Rohpro dukt. Sie wird aus Methanol umkristallisiert; Schmelzpunkt 231 .
29;2 g 4-Aeetylamino-l-(N-allyl-earbamido)- phenoxyessigsäure-(2) werden in 500 em3 Äthylenglykol heiss gelöst und diese Lösung mit einer heissen Lösung von 31,8g Mercuri- acetat in 300 cm3 Glykol versetzt. Das Queck- silberanlagerungsprodukt fällt sofort aus. Es wird nach eintägigem Stehen abfiltriert, gut mit Wasser gewaschen und noch feucht in Sodalösung wieder gelöst. Die Lösung wird mit .Kohle behandelt, filtriert und mit Eisessig angesäuert.
Die 4-Acetylamino-1-[N-(3'-oxy- mercuri- 2'-oxyäthoxy-propyl--1')-carbamido]- 2-phenoxyessigsäure fällt rein aus. Ausbeute <B>36,1</B> g. Schmelzpunkt 194 , unter Zersetzung (ab 190 tritt Sinterung ein). Das Natrium salz der erhaltenen Phenoxyessigsäure llöst sich in Wasser. Die Lösung kann mit Theo- phyllin-Natrium gepuffert werden.
Process for the preparation of 4-acetylamino-1- [N- (3'-oxy-mereuri-2'-oxyethoxy-propyl-1 ') -earbamido] -2-phenoxyacetic acid. Diuretics occupy a large part of the modern medicinal treasure trove. It who uses the mostly mercury-containing preparations ver and in particular the derivatives of salicylic acid, such as. B. the mercury-salieyl-allylamid-0-acetic acid sodium has become very important in therapy.
It has now been found that highly effective and significantly less toxic preparations than the above-mentioned mercury salicylic acid compounds are obtained if esters of p-aminosalicic acid acylated on nitrogen are reacted with allylamine to form the corresponding allylamides,
the 2-position hydroxyl group etherified with halocarboxylic acids in the presence of alkali and now introduces mercury into the allyl radical in a übli cher manner, z. B. by treating the reaction products with mercury salts of organic acids in alcohols or water.
As the acyl radicals located on the nitrogen, the radicals of aliphatic, aromatic and araliphatic carboxylic acids, such as.
B. acetyl, propionyl, butyryl, cyclopentyl propionyl, benzoyl, phenacetyl and others into consideration.
In particular, the use of compounds with lower aliphatic acyl radicals, such as acetyl, propionyl and butyryl, is indicated on the nitrogen, since the end products are then more easily soluble in water.
Both the esters with aliphatic and aromatic alcohols or phenols are suitable as esters of p-amino-salicic acid, but it is expedient to use the esters with aliphatic alcohols, in particular with lower aliphatic alcohols such as methanol, ethanol, Propanol, isopropanol, butanol, or amyl alcohol.
As halocarboxylic acids come especially for. B. aliphatic halocarboxylic acids in question, in particular, it is advantageous to use lower aliphatic halocarboxylic acids, such as chlorine, bromine or iodoacetic acid, chlorine, bromine or iodopropionic acid, chlorine, bromine or iodobutyric acid.
For the alcohols used as solvents in the mercuration, monohydric and polyhydric alcohols come into consideration, such as methanol, ethanol, propanol, isopropanol, butanol, amyl alcohol, ethylene glycol, 1,3-propylene glycol, 1,2-propylene glycol, 1,4-butanediol, glycerin and the like.
The use of the polyvalent, lower aliphatic alcohols is particularly advantageous because this significantly increases the compatibility of the compounds and their solubility in water.
The substances obtained are white, crystalline compounds. The alkali salts dissolve in water with a weakly alkaline reaction; the solutions can, for example, be buffered with theophylline sodium.
The compounds prepared according to the invention are highly effective diuretics and are well tolerated; in particular, the compounds containing oxyalkoxy radicals show particularly good tolerability and increased solubility in water.
The subject of the patent is now a process for the production of 4-acetylamino-l- [N - (3 '-'- oxymereuri - 2'-oxyäthoxy-propyl-1') - carbamido] -2 phenoxyacetic acid, which is characterized by that 4-acetylamino-2-oxy-benzoic acid methyl ester is reacted with allylamine, the 4-A obtained:
etherified cetylamino-2-oxy-benz allylamide by means of chloroacetic acid and the reaction product is reacted with mereuriacetate in the presence of ethylene glycol.
The 4-acetylamino-1- [N- (3'-oxymercuri- 2'-oxyethoxy-propyl, -1 ') @ carbamido] -2-phenoxyacetic acid obtained in this way is obtained in the form of colorless crystals with a melting point of 194 and is Soluble in dilute soda solution as well as in alkali.
The compound can, in particular, be used in the form of the sodium salt and in the form of the aqueous solution of this salt buffered with theophylline sodium as an effective diuretic which is well tolerated.
<I> Example: </I> 17 g of 4-acetylamino-2-oxy-benzoic acid methyl ester are heated to 105 for 7 hours in a sealed tube with 11 em3 allylamine. The contents of the tube are taken up with acetone, the solvent, including excess allylamine, is distilled off and the residue is recrystallized from acetone. The 4-acetylamino-2-oxy-benzallylamide obtained in this way melts at 218 (uncorr.).
14.05 g of this product are brought into solution in 80 liters of water using 7 one-3 33% sodium hydroxide solution, and 12.4 g chloroacetic acid and 11 cm3 33% sodium hydroxide solution are added in portions to this solution at -I- that the solution always remains phenolphthalein-alkaline.At the end, another 5 em3 33 1 / o sodium hydroxide solution is added, the pH rising to 12.5.
It is then heated for 2 hours in a water bath, the pg falling to the neutral point and the reaction product partially precipitating. It is diluted with water and, by acidification with concentrated hydrochloric acid, 4-acetylamino-1- (N allyl-carbamido-) L-phenoxyacetic acid-2 is obtained as a crude product. It is recrystallized from methanol; Melting point 231.
29; 2 g of 4-ethylamino-1- (N-allyl-earbamido) -phenoxyacetic acid- (2) are dissolved in 500 em3 hot ethylene glycol and this solution is mixed with a hot solution of 31.8 g mercuric acetate in 300 cm3 glycol. The mercury additive precipitates out immediately. It is filtered off after standing for one day, washed well with water and redissolved in soda solution while still moist. The solution is treated with carbon, filtered and acidified with glacial acetic acid.
The 4-acetylamino-1- [N- (3'-oxymercuri- 2'-oxyethoxypropyl - 1 ') - carbamido] - 2-phenoxyacetic acid precipitates out in pure form. Yield <B> 36.1 </B> g. Melting point 194, with decomposition (from 190 onwards sintering occurs). The sodium salt of the phenoxyacetic acid obtained dissolves in water. The solution can be buffered with theophylline sodium.
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE308142X | 1951-09-26 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH308142A true CH308142A (en) | 1955-06-30 |
Family
ID=6121626
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH308142D CH308142A (en) | 1951-09-26 | 1952-09-26 | Process for the preparation of 4-acetylamino-1- (N- (3'-oxy-mercuri-2'-oxyethoxy-propyl-1 ') -carbamido) -2-phenoxyacetic acid. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH308142A (en) |
-
1952
- 1952-09-26 CH CH308142D patent/CH308142A/en unknown
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