DE1670446A1 - New isoindolobenzothiazolone derivative and process for its preparation - Google Patents

New isoindolobenzothiazolone derivative and process for its preparation

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Publication number
DE1670446A1
DE1670446A1 DE19671670446 DE1670446A DE1670446A1 DE 1670446 A1 DE1670446 A1 DE 1670446A1 DE 19671670446 DE19671670446 DE 19671670446 DE 1670446 A DE1670446 A DE 1670446A DE 1670446 A1 DE1670446 A1 DE 1670446A1
Authority
DE
Germany
Prior art keywords
new
isoindolobenzothiazolone
derivative
preparation
isoindolo
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.)
Pending
Application number
DE19671670446
Other languages
German (de)
Inventor
Hoehn Dipl-Chem Dr Hans
Dr Med Egon Roesch
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Chemische Fabrik Von Heyden AG
Original Assignee
Chemische Fabrik Von Heyden AG
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 Chemische Fabrik Von Heyden AG filed Critical Chemische Fabrik Von Heyden AG
Publication of DE1670446A1 publication Critical patent/DE1670446A1/en
Pending legal-status Critical Current

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Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D513/00Heterocyclic compounds containing in the condensed system at least one hetero ring having nitrogen and sulfur atoms as the only ring hetero atoms, not provided for in groups C07D463/00, C07D477/00 or C07D499/00 - C07D507/00
    • C07D513/02Heterocyclic compounds containing in the condensed system at least one hetero ring having nitrogen and sulfur atoms as the only ring hetero atoms, not provided for in groups C07D463/00, C07D477/00 or C07D499/00 - C07D507/00 in which the condensed system contains two hetero rings
    • C07D513/04Ortho-condensed systems

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Nitrogen And Oxygen Or Sulfur-Condensed Heterocyclic Ring Systems (AREA)

Description

iiiieues isoind bloben.-o-bhiazolonderivat und Verfahren zu seiner- Herstellung11. Die Erfindung betrifft eine neue, als pharmazeutischer Wirkstoff verwendbare Isoindolobenzothiazolonverbindung,mit entzündungshemmenden Eigenschaften.iiiieues isoind bloben.-o-bhiazolone derivative and process for its- Manufacturing11. The invention relates to a new one as a pharmaceutical active ingredient useful isoindolobenzothiazolone compound, with anti-inflammatory properties.

Es konnte gefunden vierden, daß 5-Methyl-isoindolo(1,2-b benzot) - 1 thiazo1-12on interessante pharmakodynamische Eigenschaften aufweist, auf Grund deren diese Verbindung zur Verwendung als Heilmittel, besonders als AntiphlogistIkum, geeignet erscheint. Aus der dem 5-Igethyl-isoindolo (1,2-b)benzothiazol-12-on zugrundeliegenden tetracyclischen Verbindungsklasse ist.bisher nur das Isoindolo 11,'2-b)benzothiazol-12-on bekannt geworden; es ist, im journal of the American Chemical Society, Vol. 80p 705 (1958) beschrieben. Dieser Verbindung soll nach den Referaten in Cherlical Abs tracts 53., P 5931 b und P 14800 a-(1959) eine stabilisierende, kontrastverstärkende und schleierverhindernde Wirkung auf photographisches liaterial zukommen. Eine dem 5-biethyl-isoindolo ti 92-b)benzothiazol-12-on vergleichbare physiologische, speziell ant:Lphlogistische . WirkLmg konnte für die bekannte Verhindung nicht nachgewiesen vierden. Gegenstand der Erfindung ist demgemäß 5-Methyl-isoindolo 11 92-b3 benzothiazol-12-on mit der Pormel (I) und ein vorteilhaftes Verfahren zu dessen Herstellung. Das neue 5-Methyl-isoindolo 11 r2-b)benzothiazol-12-on gemäß Formel (I) stellt man in an sich bekannterWeise nach den dazu geeigneten Verfahren her. Zweckmäßig benutzt man ein Verfahren, bei dem, man o-Iffereaptoanilin mit Acetophenon-o-carbons-äurederivaten der allgemeinen.Formei -(11) in welcher R einen in die Garboxylgruppe überführbaren Rest darstellt, zur Reaktion bringt. Eine bevorzugte Ausführungsform des Verfahreils stellt die Auskreisung des bei der Kondensation entstehenden Wassers mit iiilfe eines Schleppmittels dar. B e i s P i e 1 1- In einen Kolben mit einem Fassungsvermögen von 2 1, der mit einem Wasserabscheider und RÜhrvorrichtung ausgestattet ist, wurden 810 ml Xylol, 124 g o-L.lercaptoauilin und 148 g Aoetoplienon-o-carbonsäure eingetragen. Das Gemisch wurde sodann 7 Stunden lang unter Rühren und Rückfluß erhitzt, Innerhalb dieses Zueitraumes wurden 30,8 ml Wasser im Abscheider abgetrennt. Anschließend verdampfte man aus der noc# warmen Reaktionslösung das Xylol im Vakutun und verrieb das zurückbleibende Öl mit ca. 150 ml Alkohol, wodurch eine schnelle Kristallisation eintrat. !.lach Stehen über Nacht saugte man das 5-Metliyl-isoindolo (1 92-b)benzothiazol-12-o,.i ab und wusch mit etwas kaltem Alkohol nach. Ausbeute: 185 g = 81 % der Theoriep Schmelzpunkt 101 - 102 0 C. Durch Unkristallisation aus AlkMhol läßt sich ein Produkt vom Schmelzpunkt 103 - 104 0 C erhalten. . B e i s -p i e 1 2 Wenn man in Beispiel 1 Aoetophenon-o-carbonsäure im stöchiometrischen Verhältnis durch dessen Ester ersetzte, erhielt man das 5-Methyl-isoindolo 11 2-b)benzothiazol-12-on in einer Ausbeute von 86 %. It has also been found that 5-methyl-isoindolo (1,2-b benzot) -1 thiazo1-12one has interesting pharmacodynamic properties, on the basis of which this compound appears suitable for use as a medicament, especially as an anti-inflammatory drug. From the tetracyclic class of compounds on which 5-igethyl-isoindolo (1,2-b) benzothiazol-12-one is based, only the isoindolo 11, 2-b) benzothiazol-12-one has become known; it is described in the journal of the American Chemical Society, Vol. 80p 705 (1958) . According to the presentations in Cherlical Abs tracts 53, P 5931 b and P 14800 a- (1959), this connection is said to have a stabilizing, contrast-enhancing and fog-preventing effect on photographic material. A physiological, especially ant: Lphlogistic, comparable to the 5-bidhyl-isoindolo ti 92-b) benzothiazol-12-one . Effectiveness could not be proven for the known prevention. The invention accordingly relates to 5-methyl-isoindolo 11 92-b3 benzothiazol-12-one with the formula (I) and an advantageous method for its manufacture. The new 5-methyl-isoindolo 11 r2-b) benzothiazol-12-one according to formula (I) is produced in a manner known per se by the processes suitable for this purpose. A method is expediently used in which, o-Iffereaptoaniline with acetophenone-o-carboxylic acid derivatives of the general form - (11) in which R represents a radical which can be converted into the carboxyl group, brings about the reaction. A preferred embodiment of Verfahreils, the removal of the water formed during the condensation with iiilfe of an entraining agent. B ei s p e 1 1 Into a flask having a capacity of 2 1, which is equipped with a water condenser and stirrer, 810 ml Xylene, 124 g of oL.lercaptoauilin and 148 g of aoetoplienone-o-carboxylic acid entered. The mixture was then heated for 7 hours with stirring and reflux. Within this period, 30.8 ml of water were separated off in the separator. The xylene was then evaporated from the still warm reaction solution in vacuo and the remaining oil was triturated with about 150 ml of alcohol, as a result of which rapid crystallization occurred. After standing overnight, the 5-methyl-isoindolo (1 92-b) benzothiazole-12-o, .i was sucked off and washed with a little cold alcohol. Yield: 185 g = 81% of Theoriep melting point 101-102 0 C. By recrystallization from AlkMhol can be a product of melting point 103 - 104 0 C obtained. . B ice -p ie 1 2 When substituting in Example 1 Aoetophenon-o-carboxylic acid in a stoichiometric ratio of its esters, to give the 5-methyl-isoindolo 11 2-b) benzothiazol-12-one in a yield of 86%.

Claims (1)

13 -u Matelltal's r-che ben-o'h-*asol-12 1. 5 le "i'3T1- J o o iiid ol o ti 92- 13 -on ,##it dcr -2'orjiel (l)
Verfahreii --u eiuer vorte-212:aaf te-a 71-Irerstell-Lml##, von, oei3.--ot-.--.iazol-12-oii. dadurch #e e ii ii e i c h r- e daß Lian Aceto-D---:eiioli-o-carbon- sLEI ur e d er -ivl- t e de r allr-eme-i1.,.en :,.lormel (II)
';ri neic:ior H eiiieii i-.,i dfe Olarbo:r 1-ruppe i#tl)er'L-.4.L.Lrbareii Rest y G darstuellt, iait o-I.lercaptoiiiili-n zur Hea,-:,--LLion bringt und das dabei e-.-itsü--1,ldeiie X-ondellsationswasser mit Hilf:,e. eines Sclile-i-,%-o- i n 'ttel- durch Des-l-illatio'n unter Rücl-zfluß'WlrwilG und Wasser- zLbscheiduiiG aushreist.
3. Arzileimittel, dadurch g e h e n n Z e i c 11 11 e t daß es als Wirk.Oboff 5-1.,etl",;-1-isoi.ndolo (1 9 2-b) er.z 0- thiazol-12-on enthält.
13 -u Matelltal's r-che ben-o'h- * asol-12 1. 5 le "i'3T1- J o o iiid ol o ti 92- 13 -on, ## it dcr -2'orjiel (l)
Procedure --u eiuer vorte-212: aaf te-a 71-Irerstell-Lml ##, from, oei3 .-- ot -.--. iazol-12-oii. through this #ee ii ii eich r- e that Lian Aceto-D ---: eiioli-o-carbon- sLEI ur e d er -ivl- te de r allr-eme-i1.,. en:,. lormel (II)
'; ri neic: ior H eiiieii i -., i dfe Olarbo: r 1 -ruppe i # tl) er'L-.4.L.Lrbareii rest y G represents, iait oI.lercaptoiiiili-n to Hea, -:, - LLion brings and that thereby e -.- itsü - 1, ldeiie X-ondellsationswasser with the help:, e. of a Sclile-i -,% - o- in 'ttel- through Des-l-illatio'n under Rücl-zfluss'WlrwilG and water- zLbscheiduiiG leaves.
3. Arzileimittel, characterized g e h hen egg Z c 11 11 et that it is effective as Oboff 5-1., etl ",; - 1-isoi.ndolo (1 9 2-b) er.z 0- contains thiazol-12-one.
DE19671670446 1967-07-13 1967-07-13 New isoindolobenzothiazolone derivative and process for its preparation Pending DE1670446A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEC0042867 1967-07-13

Publications (1)

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DE1670446A1 true DE1670446A1 (en) 1971-02-11

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0475908A1 (en) * 1990-09-14 1992-03-18 Ciba-Geigy Ag Chromogenic lactam compounds, their production and use
US5250592A (en) * 1990-04-12 1993-10-05 Ciba-Geigy Corporation Isoindolinone compounds as stabilizers for organic materials

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5250592A (en) * 1990-04-12 1993-10-05 Ciba-Geigy Corporation Isoindolinone compounds as stabilizers for organic materials
EP0475908A1 (en) * 1990-09-14 1992-03-18 Ciba-Geigy Ag Chromogenic lactam compounds, their production and use
US5329006A (en) * 1990-09-14 1994-07-12 Ciba-Geigy Corporation Chromogenic lactam compounds, their preparation and their use
US5426192A (en) * 1990-09-14 1995-06-20 Ciba-Geigy Corporation Chromogenic lactam compounds, their preparation and their use

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