CH481894A - Process for the preparation of sulfonamides - Google Patents
Process for the preparation of sulfonamidesInfo
- Publication number
- CH481894A CH481894A CH1786668A CH1786668A CH481894A CH 481894 A CH481894 A CH 481894A CH 1786668 A CH1786668 A CH 1786668A CH 1786668 A CH1786668 A CH 1786668A CH 481894 A CH481894 A CH 481894A
- Authority
- CH
- Switzerland
- Prior art keywords
- formula
- preparation
- ketal
- methyl
- isocyanate
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 9
- 238000002360 preparation method Methods 0.000 title claims description 4
- 229940124530 sulfonamide Drugs 0.000 title description 2
- 150000003456 sulfonamides Chemical class 0.000 title description 2
- -1 amino, acetyl Chemical group 0.000 claims description 7
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims description 5
- 125000000217 alkyl group Chemical group 0.000 claims description 4
- 239000012948 isocyanate Substances 0.000 claims description 4
- 150000001875 compounds Chemical class 0.000 claims description 3
- 150000002513 isocyanates Chemical class 0.000 claims description 3
- 150000003839 salts Chemical class 0.000 claims description 3
- LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 claims description 2
- 125000004442 acylamino group Chemical group 0.000 claims description 2
- 125000003545 alkoxy group Chemical group 0.000 claims description 2
- 125000004414 alkyl thio group Chemical group 0.000 claims description 2
- 150000001408 amides Chemical class 0.000 claims description 2
- 229910052736 halogen Inorganic materials 0.000 claims description 2
- 150000002367 halogens Chemical class 0.000 claims description 2
- 229910052739 hydrogen Inorganic materials 0.000 claims description 2
- 239000001257 hydrogen Substances 0.000 claims description 2
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims description 2
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 claims description 2
- VTLHPYXKUOESEM-UHFFFAOYSA-N sodium;(4-methylphenyl)sulfonylazanide Chemical compound [Na+].CC1=CC=C(S([NH-])(=O)=O)C=C1 VTLHPYXKUOESEM-UHFFFAOYSA-N 0.000 claims description 2
- YROXIXLRRCOBKF-UHFFFAOYSA-N sulfonylurea Chemical class OC(=N)N=S(=O)=O YROXIXLRRCOBKF-UHFFFAOYSA-N 0.000 claims description 2
- 230000001419 dependent effect Effects 0.000 claims 1
- 125000001037 p-tolyl group Chemical group [H]C1=C([H])C(=C([H])C([H])=C1*)C([H])([H])[H] 0.000 claims 1
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 6
- 239000007858 starting material Substances 0.000 description 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 239000003960 organic solvent Substances 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 2
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical class NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- DSSYKIVIOFKYAU-XCBNKYQSSA-N (R)-camphor Chemical compound C1C[C@@]2(C)C(=O)C[C@@H]1C2(C)C DSSYKIVIOFKYAU-XCBNKYQSSA-N 0.000 description 1
- 229930007886 (R)-camphor Natural products 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- YGYAWVDWMABLBF-UHFFFAOYSA-N Phosgene Chemical compound ClC(Cl)=O YGYAWVDWMABLBF-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 125000001931 aliphatic group Chemical group 0.000 description 1
- 150000001447 alkali salts Chemical class 0.000 description 1
- 239000012670 alkaline solution Substances 0.000 description 1
- 125000002947 alkylene group Chemical group 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 239000004202 carbamide Substances 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 239000012876 carrier material Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 125000000068 chlorophenyl group Chemical group 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 125000004177 diethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- 125000000118 dimethyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- 150000008282 halocarbons Chemical class 0.000 description 1
- 125000005059 halophenyl group Chemical group 0.000 description 1
- 125000004051 hexyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 125000001147 pentyl group Chemical group C(CCCC)* 0.000 description 1
- 239000000825 pharmaceutical preparation Substances 0.000 description 1
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 238000007127 saponification reaction Methods 0.000 description 1
- 159000000000 sodium salts Chemical class 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D263/00—Heterocyclic compounds containing 1,3-oxazole or hydrogenated 1,3-oxazole rings
- C07D263/52—Heterocyclic compounds containing 1,3-oxazole or hydrogenated 1,3-oxazole rings condensed with carbocyclic rings or ring systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L9/00—Rigid pipes
- F16L9/10—Rigid pipes of glass or ceramics, e.g. clay, clay tile, porcelain
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- General Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Dispersion Chemistry (AREA)
- Mechanical Engineering (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
Description
Verfahren zur Herstellung von Sulfonamiden
Die vorliegende Erfindung betrifft ein Verfahren zur Herstellung von neuen Sulfonylharnstoffderivaten der allgemeinen Formel
EMI1.1
in der R Wasserstoff oder Methyl, und Rl Phenyl, das durch Niederalkyl-, Niederalkoxy-, oder Niederalkylthio-, Amino-, Acetyl-, Halogen-, Acylamino- oder Diacylamidogruppen substituiert sein kann, bedeutet.
Unter niederen Alkylgruppen sollen geradkettige oder verzweigte Alkylgruppen mit 1-6 Kohlenstoffatomen verstanden werden. Beispiele dafür sind Methyl, Äthyl, Propyl, Isopropyl, Butyl, Pentyl, Hexyl und deren Isomeren. Halogenphenyl ist vorzugsweise Chlorphenyl.
Eine Acylaminophenylgruppe kann aliphatische oder aromatische Acylreste enthalten. Beispiele für solche Gruppen sind Acetaminophenyl oder Benzoylaminophenyl. Eine Diacylimidophenylgruppe ist beispielsweise die Phtalimidophenylgruppe. Als Ketal kommen beispielsweise Dialkylketale, wie das Dimethyl- oder Di äthylketal; oder Alkylenketale, wie das Äthylenketal, in Betracht. Die Verseifung solcher Ketale kann mit sauren Agenzien, z. B. Mineralsäuren wie Salzsäure, vorzugsweise in Gegenwart eines organischen Lösungsmittels, wie Aceton, durchgeführt werden.
Das erfindugsgemässe Verfahren ist dadurch gekennzeichnet, dass man ein Salz des Amids einer Sulfonsäure der Formel RI-SO,H (11) mit einem Isocyanat der Formel
EMI1.2
oder mit einem entsprechenden Ketal umsetzt und ein erhaltenes Ketal verseift. Zweckmässig wird ein Salz einer starken Base, z. B. ein Alkalisalz, wie das Natriumsalz, eingesetzt. Als Reaktionsmedium eignen sich inerte organische Lösungsmittel, z. B. wasserfreie, nicht hydrooxylgruppenhaltige organische Lösungsmittel, z. B.
Kohlenwasserstoffe wie Benzol, halogenierte Kohlenwasserstoffe, wie Chloroform, oder Dimethylformamid.
Die erfindungsgemäss erhältlichen Verbindungen der Formel I können in verschiedenen Konfigurationen, die von der Stereochemie der Ausgangsmaterialen der Formel III abhängen, vorliegen, z. B. als Racemat oder in optisch aktiver Form. Bevorzugte Ausgangsverbindungen der Formel III sind solche, in denen R eine Methylgruppe darstellt, und davon insbesondere diejenigen, die sich konfigurativ vom DL- oder D-Campher ableiten.
Die Ausgangsmaterialien für das erfindungsgemässe Verfahren können, soweit sie nicht bekannt sind, nach an sich bekannten Methoden hergestellt werden. Ausgangsverbindungen der Formel III können aus den entsprechenden Aminoketonen oder -ketalen durch Umsetzung mit Phosgen erhalten werden.
Die Verbindungen der Formel I zeichnen sich durch eine aussergewöhnliche blutzuckersenkende Aktivität bei oraler Applikation aus. Sie können daher als Heilmittel in Form pharmazeutischer Präparate Verwendung finden, welche sie in Mischung mit einem geeigneten pharmazeutischen, organischen oder anorganischen inerten Trägermaterial enhalten.
Im folgenden Beispiel sind die Temperaturen in Celsiusgraden angegeben.
Beispiel 1, 06 g p-Toluolsulfonamid-Natrium werden in 30 ml absolutem Dimethylformamid suspendiert und mit 0,97 g D-Camphoryl-(3)-isocyanat bei 200 unter Rühren versetzt, wobei alles in Lösung geht. Es wird noch 15 Stunden bei 200 gerührt. Das Lösungsmittel wird hierauf abgedampft, der ölige Rückstand in 20ml 0,5 Natronlauge gelöst und die alkalische Lösung mit verdünnter Salzsäure angesäuert. Der ausgefallene 1- (p-Toluol- sulfonyl)-3-(3'-endo-D-camphoryl)-harnstoff wird isoliert, mit Wasser gewaschen und aus Methanol/Wasser umkristallisiert. Ausbeute 1,6 g (88 O/o d. Th.), Zersetzungspunkt 190 .
Process for the preparation of sulfonamides
The present invention relates to a process for the preparation of new sulfonylurea derivatives of the general formula
EMI1.1
in which R is hydrogen or methyl, and Rl is phenyl which can be substituted by lower alkyl, lower alkoxy or lower alkylthio, amino, acetyl, halogen, acylamino or diacylamido groups.
Lower alkyl groups are to be understood as meaning straight-chain or branched alkyl groups with 1-6 carbon atoms. Examples are methyl, ethyl, propyl, isopropyl, butyl, pentyl, hexyl and their isomers. Halophenyl is preferably chlorophenyl.
An acylaminophenyl group can contain aliphatic or aromatic acyl radicals. Examples of such groups are acetaminophenyl or benzoylaminophenyl. A diacylimidophenyl group is, for example, the phthalimidophenyl group. As a ketal, for example, dialkyl ketals, such as the dimethyl or diethyl ketal; or alkylene ketals, such as the ethylene ketal, into consideration. The saponification of such ketals can be carried out with acidic agents, e.g. B. mineral acids such as hydrochloric acid, preferably in the presence of an organic solvent such as acetone.
The process according to the invention is characterized in that a salt of the amide of a sulfonic acid of the formula RI-SO, H (11) with an isocyanate of the formula
EMI1.2
or reacted with a corresponding ketal and saponified a ketal obtained. A salt of a strong base, e.g. B. an alkali salt such as the sodium salt is used. Inert organic solvents, eg. B. anhydrous, non-hydrooxyl-containing organic solvents, e.g. B.
Hydrocarbons such as benzene, halogenated hydrocarbons such as chloroform, or dimethylformamide.
The compounds of the formula I obtainable according to the invention can be present in various configurations which depend on the stereochemistry of the starting materials of the formula III, e.g. B. as a racemate or in optically active form. Preferred starting compounds of the formula III are those in which R represents a methyl group, and of these in particular those which are derived from DL- or D-camphor in terms of configuration.
The starting materials for the process according to the invention can, if they are not known, be prepared by methods known per se. Starting compounds of the formula III can be obtained from the corresponding amino ketones or ketals by reaction with phosgene.
The compounds of the formula I are distinguished by an exceptional blood sugar-lowering activity when administered orally. They can therefore be used as medicaments in the form of pharmaceutical preparations which they contain as a mixture with a suitable pharmaceutical, organic or inorganic inert carrier material.
In the following example the temperatures are given in degrees Celsius.
EXAMPLE 1, 06 g of sodium p-toluenesulfonamide are suspended in 30 ml of absolute dimethylformamide and 0.97 g of D-camphorl (3) isocyanate are added at 200 ° C., with everything dissolving. The mixture is stirred at 200 for a further 15 hours. The solvent is then evaporated, the oily residue is dissolved in 20 ml of 0.5 sodium hydroxide solution and the alkaline solution is acidified with dilute hydrochloric acid. The precipitated 1- (p-toluenesulfonyl) -3- (3'-endo-D-camphoryl) urea is isolated, washed with water and recrystallized from methanol / water. Yield 1.6 g (88 O / o of theory), decomposition point 190.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH1786668A CH481894A (en) | 1966-10-28 | 1966-10-28 | Process for the preparation of sulfonamides |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH1786668A CH481894A (en) | 1966-10-28 | 1966-10-28 | Process for the preparation of sulfonamides |
| CH1565166A CH470358A (en) | 1966-10-28 | 1966-10-28 | Process for the preparation of sulfonamides |
| CH582267 | 1967-04-24 | ||
| CH1018767A CH486433A (en) | 1966-10-28 | 1967-07-17 | Process for the preparation of sulfonamides |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH481894A true CH481894A (en) | 1969-11-30 |
Family
ID=27428936
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH1786668A CH481894A (en) | 1966-10-28 | 1966-10-28 | Process for the preparation of sulfonamides |
Country Status (1)
| Country | Link |
|---|---|
| CH (1) | CH481894A (en) |
-
1966
- 1966-10-28 CH CH1786668A patent/CH481894A/en not_active IP Right Cessation
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PL | Patent ceased |