CH391730A - Process for the preparation of N'-substituted N-thiophenesulfonylureas - Google Patents

Process for the preparation of N'-substituted N-thiophenesulfonylureas

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Publication number
CH391730A
CH391730A CH940361A CH940361A CH391730A CH 391730 A CH391730 A CH 391730A CH 940361 A CH940361 A CH 940361A CH 940361 A CH940361 A CH 940361A CH 391730 A CH391730 A CH 391730A
Authority
CH
Switzerland
Prior art keywords
acid
thiophenesulfonylcarbamic
formula iii
reactive functional
functional derivative
Prior art date
Application number
CH940361A
Other languages
German (de)
Inventor
Willy Dr Stoll
Henri Dr Dietrich
Original Assignee
Geigy Ag J R
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Geigy Ag J R filed Critical Geigy Ag J R
Priority to CH940361A priority Critical patent/CH391730A/en
Publication of CH391730A publication Critical patent/CH391730A/en

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Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D333/00Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom
    • C07D333/02Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom not condensed with other rings
    • C07D333/04Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom not condensed with other rings not substituted on the ring sulphur atom
    • C07D333/26Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom not condensed with other rings not substituted on the ring sulphur atom with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
    • C07D333/30Hetero atoms other than halogen
    • C07D333/34Sulfur atoms

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)

Description

  

  
 



  Verfahren zur Herstellung von N'-substituierten   N-Thiophensulfonylharnstoffen   
Die vorliegende Erfindung betrifft ein Verfahren zur Herstellung von neuen N'-substituierten N-Thiophensulfonylharnstoffen mit wertvollen pharmakologischen Eigenschaften.



   Es wurde gefunden, dass N'-substituierte N-Thiophensulfonylharnstoffe der Formel I,
EMI1.1     
 worin
R einen gegebenenfalls durch Heteroatome unter brochenen Alkylrest, einen Alkenyl-, Cycloalkyl oder Aralkylrest,
X Wasserstoff, ein Halogenatom, eine niedermole kulare Alkyl- oder Alkoxygruppe, die Nitro gruppe, die Aminogruppe oder eine Acylamino oder Sulfonylaminogruppe, und
Y Wasserstoff, ein Halogenatom oder eine niedere
Alkylgruppe bedeuten, nach peroraler Verabreichung eine starke Senkung des Blutzuckerspiegels bewirken.



   Man stellt die vorstehend definierten Verbindungen erfindungsgemäss her, indem man ein Amin der Formel II    R-NH2 (11 >     mit einem reaktionsfähigen, funktionellen Derivat einer Thiophensulfonylcarbaminsäure der Formel III,
EMI1.2     
 umsetzt. Dazu geeignete funktionelle Derivate solcher Carbaminsäuren sind deren Ester, z. B. niedermolekulare Alkylester, wie insbesondere die Methylester.



   Als Thiophensulfonylcarbaminsäurederivate der Formel III können beispielsweise diejenigen, welche sich aus den nachstehenden Thiophensulfonsäuren ableiten, Verwendung finden:
2-Thiophensulfonsäure,
5 -Chlor-2-thiophensulfons äure,
4,   5-Dichlor-2-thiophensulfons äure,       3 -Brom-2-thiophensulfons    äure,
5-Brom-2-thiophensulfonsäure,
3   ,4-Dibrom-2-thiophensulfonsäure,       4,5-Dibrom-2-thiophensulfonsäure,   
4-Nitro-2-thiophensulfonsäure,    5 -Nitro-2-thiophensulfonsäure,       5-Amino-2-thiophensulfons    äure,
5 -Acetamino-2-thiophensulfonsäure,
3 -Thiophensulfons äure,
2,   5-Dibrom-3-thiophensulfonsäure,       5-Methyl-2-thiophensulfons äure,   
4,5 -Dimethyl-2-thiophensulfons äure,    2,

  5-Dimethyl-3-thiophensulfonsäure,   
4-Brom-5-methyl-2-thiophensulfonsäure und
5-Brom-4-methyl-2-thiophen-sulfonsäure.



   Zur erfindungsgemässen Anwendung geeignete Amine sind beispielsweise das Methyl-, Äthyl-, n-Propyl-, Isopropyl-, n-Butyl-, Isobutyl-, sek. Butyl-, n-Amyl-, Isoamyl-, n-Hexyl-,   fl-Methyl-pentyl-,    n-Octyl-, ss-Äthyl-hexyl-, ss-Äthoxy-äthyl-, Allyl-, Crotyl-, Methallyl-, Cyclopentyl-,   Cyclohexyl-,    Endomethylencyclohexylmethyl-, Benzyl- und ss-Phenyl äthylamin.



   Die erfindungsgemäss hergestellten Verbindungen der allgemeinen Formel I lassen sich in üblicher Weise in beständige, wasserlösliche Alkalisalze überführen.  



   Im nachstehenden   Beispiel bedeuten Teile Ge-    wichtsteile. Die Temperaturen sind in Celsiusgraden angegeben.



   Beispiel
22,1 Teile N-(Thiophensulfonyl-2)-carbaminsäure-methylester werden mit 8 Teilen n-Butylamin in 50 Volumteilen Glykolmonomethyläther   4-Stunden    unter Rückfluss gekocht. Anschliessend engt man das Reaktionsgemisch am Vakuum ein, löst den Rückstand in verdünntem Ammoniak, filtriert, entfärbt das Filtrat mit Tierkohle und fällt daraus den N-(Thio  phensulfonyl-2)-N-n-butyl-harnstoff    mit verdünnter Salzsäure. Nach Umkristallisieren aus Äthanol schmilzt er bei 152-154,5 .



   In analoger Weise erhält man nachstehende Verbindungen der allgemeinen Formel IV:
EMI2.1     
 Nr. X R Schmelzpunkt
1 H n-C3H7 140-140,5 
2 H isoC3H7   147-148,50   
3 H   iso-C4Hg    179,5-182,5 
4 H sek. C4H9 162,5-163,5 
5 H   iso-C5HIl    133,5-135,5 
6 H Cyclohexyl 185-186 
7   C1    n-C3H7 170,5-172,5 
8   C1    iso-C3H7   155-156,50   
9 Cl   n-C4Hg    132,5-133,5  10   C1      iso-C4Hg      163-164     11   C1      sek.C4H9      127,5-1290    12 Cl iso-C5H11 132-133  13   C1 -CH2CH=CH2      131,5-1320    14 Br n-C3H7 165-166,5  15 Br iso-C3H7 165,5-167,

  5  16 Br   iso-C4Hg    166-167,5  17 Br sek. C4H9   135-136     18 Br   iso-C5HJ,    131,5-133  19 Br Cyclohexyl   176,5-1770      



  
 



  Process for the preparation of N'-substituted N-thiophenesulfonylureas
The present invention relates to a process for the preparation of new N'-substituted N-thiophenesulfonylureas with valuable pharmacological properties.



   It has been found that N'-substituted N-thiophenesulfonylureas of the formula I,
EMI1.1
 wherein
R an alkyl radical optionally interrupted by heteroatoms, an alkenyl, cycloalkyl or aralkyl radical,
X is hydrogen, a halogen atom, a low molecular weight alkyl or alkoxy group, the nitro group, the amino group or an acylamino or sulfonylamino group, and
Y is hydrogen, a halogen atom or a lower one
Alkyl group mean, cause a strong lowering of the blood sugar level after oral administration.



   The compounds defined above are prepared according to the invention by adding an amine of the formula II R-NH2 (11> with a reactive, functional derivative of a thiophenesulfonylcarbamic acid of the formula III,
EMI1.2
 implements. Functional derivatives of such carbamic acids suitable for this purpose are their esters, e.g. B. low molecular weight alkyl esters, such as in particular the methyl esters.



   As thiophenesulfonylcarbamic acid derivatives of the formula III, for example, those which are derived from the following thiophenesulfonic acids can be used:
2-thiophenesulfonic acid,
5-chloro-2-thiophenesulfonic acid,
4,5-dichloro-2-thiophenesulfonic acid, 3-bromo-2-thiophenesulfonic acid,
5-bromo-2-thiophenesulfonic acid,
3, 4-dibromo-2-thiophenesulfonic acid, 4,5-dibromo-2-thiophenesulfonic acid,
4-nitro-2-thiophenesulfonic acid, 5-nitro-2-thiophenesulfonic acid, 5-amino-2-thiophenesulfonic acid,
5 -acetamino-2-thiophenesulfonic acid,
3-thiophenesulfonic acid,
2, 5-dibromo-3-thiophenesulfonic acid, 5-methyl-2-thiophenesulfonic acid,
4,5-dimethyl-2-thiophenesulfonic acid, 2,

  5-dimethyl-3-thiophenesulfonic acid,
4-bromo-5-methyl-2-thiophenesulfonic acid and
5-bromo-4-methyl-2-thiophene sulfonic acid.



   Amines suitable for use in accordance with the invention are, for example, methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, sec. Butyl, n-amyl, isoamyl, n-hexyl, fl-methyl-pentyl, n-octyl, ss-ethyl-hexyl, ss-ethoxy-ethyl, allyl, crotyl, methallyl , Cyclopentyl, cyclohexyl, endomethylene cyclohexylmethyl, benzyl and ss-phenyl ethylamine.



   The compounds of the general formula I prepared according to the invention can be converted into stable, water-soluble alkali salts in the usual manner.



   In the example below, parts mean parts by weight. The temperatures are given in degrees Celsius.



   example
22.1 parts of methyl N- (thiophenesulfonyl-2) carbamate are refluxed with 8 parts of n-butylamine in 50 parts by volume of glycol monomethyl ether for 4 hours. The reaction mixture is then concentrated in vacuo, the residue is dissolved in dilute ammonia, filtered, the filtrate is decolorized with animal charcoal and N- (thiophenesulfonyl-2) -N-n-butylurea is precipitated therefrom with dilute hydrochloric acid. After recrystallization from ethanol, it melts at 152-154.5.



   The following compounds of the general formula IV are obtained in an analogous manner:
EMI2.1
 No. X R melting point
1 H n-C3H7 140-140.5
2 H isoC3H7 147-148.50
3 H iso-C4Hg 179.5-182.5
4 H sec. C4H9 162.5-163.5
5 H iso-C5HIl 133.5-135.5
6 H cyclohexyl 185-186
7 C1 n-C3H7 170.5-172.5
8 C1 iso-C3H7 155-156.50
9 Cl n-C4Hg 132.5-133.5 10 C1 iso-C4Hg 163-164 11 C1 sec. C4H9 127.5-1290 12 Cl iso-C5H11 132-133 13 C1 -CH2CH = CH2 131.5-1320 14 Br n-C3H7 165-166.5 15 Br iso-C3H7 165.5-167,

  5 16 Br iso-C4Hg 166-167.5 17 Br sec. C4H9 135-136 18 Br iso-C5HJ, 131.5-133 19 Br cyclohexyl 176.5-1770

 

Claims (1)

PATENTANSPRUCH Verfahren zur Herstellung von N'-substituierten N-Thiophensulfonylharnstoffen der Formel I, EMI2.2 worin R' einen gegebenenfalls durch Heteroatome unter brochenen Alkylrest, einen Alkenyl-, Cycloalkyl oder Aralkylrest, X Wasserstoff, ein Halogenatom, eine niedermole kulare Alkyl oder Alkoxygruppe, die Nitro gruppe, die Aminogruppe oder eine Acylamino oder Sulfonylaminogruppe, und Y Wasserstoff, ein Halogenatom oder eine niedere Alkylgruppe bedeuten, dadurch gekennzeichnet, dass man ein Amin der Formel R-NH2 (11) mit einem reaktionsfähigen funktionellen Derivat einer Thiophensulfonylcarbamins äure der Formel III, EMI2.3 umsetzt. PATENT CLAIM Process for the preparation of N'-substituted N-thiophenesulfonylureas of the formula I, EMI2.2 wherein R 'is an alkyl radical, optionally interrupted by heteroatoms, an alkenyl, cycloalkyl or aralkyl radical, X is hydrogen, a halogen atom, a low molecular weight alkyl or alkoxy group, the nitro group, the amino group or an acylamino or sulfonylamino group, and Y is hydrogen, a halogen atom or a lower one Mean alkyl group, characterized in that an amine of the formula R-NH2 (11) with a reactive functional derivative of a thiophenesulfonylcarbamic acid of the formula III, EMI2.3 implements. UNTERANSPRÜCHE 1. Verfahren gemäss Patentanspruch, dadurch gekennzeichnet, dass man als reaktionsfähiges funktionelles Derivat einer Thiophensulfonylcarbaminsäure der Formel III einen niederen Alkylester verwendet. SUBCLAIMS 1. The method according to claim, characterized in that a lower alkyl ester is used as the reactive functional derivative of a thiophenesulfonylcarbamic acid of the formula III. 2. Verfahren gemäss Patentanspruch und Unteranspruch 1, dadurch gekennzeichnet, dass man als reaktionsfähiges funktionelles Derivat einer Thiophensulfonylcarbaminsäure der Formel III den Methylester verwendet. 2. Process according to claim and dependent claim 1, characterized in that the methyl ester is used as the reactive functional derivative of a thiophenesulfonylcarbamic acid of the formula III. 3. Verfahren gemäss Patentanspruch und Unteransprüchen 1 und 2, dadurch gekennzeichnet, dass man als reaktionsfähiges funktionelles Derivat einer Thiophensulfonylcarbaminsäure der Formel III den N-(Thiophensulfonyl-2)-carbaminsäuremethylester verwendet. 3. Process according to claim and dependent claims 1 and 2, characterized in that methyl N- (thiophenesulfonyl-2) carbamate is used as the reactive functional derivative of a thiophenesulfonylcarbamic acid of the formula III.
CH940361A 1961-08-10 1961-08-10 Process for the preparation of N'-substituted N-thiophenesulfonylureas CH391730A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CH940361A CH391730A (en) 1961-08-10 1961-08-10 Process for the preparation of N'-substituted N-thiophenesulfonylureas

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH940361A CH391730A (en) 1961-08-10 1961-08-10 Process for the preparation of N'-substituted N-thiophenesulfonylureas

Publications (1)

Publication Number Publication Date
CH391730A true CH391730A (en) 1965-05-15

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Application Number Title Priority Date Filing Date
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2068472A1 (en) * 1969-08-07 1971-08-27 Hoechst Ag

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2068472A1 (en) * 1969-08-07 1971-08-27 Hoechst Ag

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