US2656357A - 1-piperazyl-4-methylthioxanthones and method of preparing same - Google Patents
1-piperazyl-4-methylthioxanthones and method of preparing same Download PDFInfo
- Publication number
- US2656357A US2656357A US303400A US30340052A US2656357A US 2656357 A US2656357 A US 2656357A US 303400 A US303400 A US 303400A US 30340052 A US30340052 A US 30340052A US 2656357 A US2656357 A US 2656357A
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- US
- United States
- Prior art keywords
- piperazyl
- methylthioxanthones
- worms
- compounds
- methylthioxanthone
- 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
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D335/00—Heterocyclic compounds containing six-membered rings having one sulfur atom as the only ring hetero atom
- C07D335/04—Heterocyclic compounds containing six-membered rings having one sulfur atom as the only ring hetero atom condensed with carbocyclic rings or ring systems
- C07D335/10—Dibenzothiopyrans; Hydrogenated dibenzothiopyrans
- C07D335/12—Thioxanthenes
- C07D335/14—Thioxanthenes 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 in position 9
- C07D335/16—Oxygen atoms, e.g. thioxanthones
Definitions
- the compounds of the present, invention may be: illustrated by the following EStIU'QtHI'BJl formula:
- reaction is ⁇ preferably carried out in: a hydrocarbon solvent such as toluene, benzene, xylene, and the like.
- a hydrocarbon solvent such as toluene, benzene, xylene, and the like.
- a desirable method is one in which. the intermediates are heatedin a solvent at refluxing-temperatures for a period of from 4 to Zi'hours. In general the preferred temperature maybe from to 150 C.
- the products of the present invention are ac.- tive against schistosomiasis.
- the activity of the compounds is determined-by inoculating mice intraperitoneally with a suspension of viable cercariae and allowing 6-170 8 weeks forthe de+ velopment of adulti'worms-inthe mesenteric and portal veins or liver.” Treatment is started when adult worms are present and is continued for various periods of time thereafter. The effect of the treatment on the schistosomes is determined by killing the mice, necropsy and counting the number of living and dead worms in the mesentery or liver. In untreated mice about of the worms are found in the mesentery and dead worms are seldom found in the liver.
- Schistosomacidal compounds cause a pronounced shift of worms from the mesentery to the liver and within a short period of time most of the worms in the liver are dead.
- the following table shows the results obtained using the compound 1-[1'(4'-methylpiperazyl)l 4 methylthioxanthone against Schistosoma mansoni:
- the compounds of the present invention are toxic to the agents causing schistosomiasis while being relatively non-toxic to the host.
- the compounds also are more active and less toxic than antimonial compounds such as tartar emetic.
- the compounds of the present invention may be prepared by the following method which illustrates the preparation of 1-[1'(4t-methy1piperazyl) li-methylthioxanthone.
- the compound 1- (1 '-piperazyl) -4-methylthioxanthone can be prepared by the same process illustrated above with the exception that a carbalkoxy piperazine, such as carbethoxy-p-iperazine, is used instead of 'l-methylpiperazine and the carbalkoxy or carbethoxy group removed by acid hydrolysis.
- a carbalkoxy piperazine such as carbethoxy-p-iperazine
- R is a member of the group consisting of hydrogen and methyl radicals.
- R is a member of the group consisting 15 of hydrogen and methyl radicals which comprises reacting l-chloro-4-methylthioxanthone with a member of the group consisting of carboxalkylated piperazines and N-methylpiperazine in a hydrocarbon solvent and recovering said prod- 20 not therefrom.
- a method of preparing 1-[1(4-methylpiperazyl)l-4-methylthioxanthone which comprises reacting 1-chloro--methylthioxanthone with l-methylpiperazine in a hydrocarbon sol- 25 vent and recovering said product therefrom.
Description
Patented Oct. 20, 1953 1-PIPERAZYL-4-METHYLTHIOXANTHONES. AND METHOD OF PREPARING" SAME Samuel. Kushner, Nanuet,i N.' Y, assignor' to American Cyanamid Company, New.Xork; N. Y:;. a corporation of Maine No Drawing. Application August 8, 1952," Serial No. 303,400
4 Claims (Cl..260-268 )J This .invention relates-.-tonew organic com.-
pounds. More particularly, it relates to l-piperazyl-i methylthioxanthones and their method of preparation.
The compounds of the present, invention may be: illustrated by the following EStIU'QtHI'BJl formula:
Thereaction is {preferably carried out in: a hydrocarbon solvent such as toluene, benzene, xylene, and the like. A desirable methodis one in which. the intermediates are heatedin a solvent at refluxing-temperatures for a period of from 4 to Zi'hours. In general the preferred temperature maybe from to 150 C.
The products of the present invention are ac.- tive against schistosomiasis. The activity of the compounds is determined-by inoculating mice intraperitoneally with a suspension of viable cercariae and allowing 6-170 8 weeks forthe de+ velopment of adulti'worms-inthe mesenteric and portal veins or liver." Treatment is started when adult worms are present and is continued for various periods of time thereafter. The effect of the treatment on the schistosomes is determined by killing the mice, necropsy and counting the number of living and dead worms in the mesentery or liver. In untreated mice about of the worms are found in the mesentery and dead worms are seldom found in the liver. Schistosomacidal compounds cause a pronounced shift of worms from the mesentery to the liver and within a short period of time most of the worms in the liver are dead. The following table shows the results obtained using the compound 1-[1'(4'-methylpiperazyl)l 4 methylthioxanthone against Schistosoma mansoni:
Activity of 1-[1 (4'-methylpiperazyl) ]-4-methylthioxanthone against Schistosoma mansoni in mice . Total No. of Worms Found No. Mice Necropsy at Necropsy Average Percent zsiriod Il:{o. Percent Dof d ays we ea Dosage after Mesentery Liver Worms gg Worms Actwlty tree per in Used Survived ment) M ouse Liver Liver Alive Deed Alive Dead 10 Ip. B. I. D.X12 10 9 24 72 0 7 2+ 9 11. 1+ 22. 2+ 25 11). B. I. D.Xl2 10 8 24 6 0 1 1 1 25.0 50.0 50 Ip. B. I. D.Xl2 10 3 24 0 0 0 1+ 0 100. 0 100. O 50 Or. B. I. D. l2.. l0 3 24 1 1 0 1 50. 0+ 50. 0+ Or. B. I. D. 6 l0 7 24 0 0 0 30 0 100.0 100.0 Or. 0. D. 6 l0 7 25 0 0 1 3+ 1 100. 0 75. 0+ Or.1 dose. 10 9 23 33 0 8 29 3 52. 8 78. 3 300 Or.1 dose 10 9 23 6 l 1 5+ 1 46. 0+ 83. 3+
Ip. =Intraperitoneally.
B. I. D.=Twice a day. tion they may be chemically linked together in some manner. The 4-chloro isomer is less reactive than the 1-ch1oro compound and under the conditions of the present process, does not combine with the alkylated or carboxalkylated piperazine. The unreacted 4-chloro compound, lacking basic properties, is not extracted when using an aqueous acid solution. The desired product, on the other hand, is basic and is extracted by the aqueous acid solution and subsequently precipitated by neutralization with an alkaline substance.
The compounds of the present invention are toxic to the agents causing schistosomiasis while being relatively non-toxic to the host. The compounds also are more active and less toxic than antimonial compounds such as tartar emetic.
The compounds of the present invention may be prepared by the following method which illustrates the preparation of 1-[1'(4t-methy1piperazyl) li-methylthioxanthone.
An isomeric mixture of 20 g. of 1-ch1oro-4- methyl thioxanthone and its isomer 4-chloro-lmethylthioxanthone, 10 g. of sodium bicarbonate,
yield of 11 g. of 1-[1(4'-methylpiperazyl)1-4- methylthioxanthone, having a melting point of 133-134 C. was obtained.
The compound 1- (1 '-piperazyl) -4-methylthioxanthone can be prepared by the same process illustrated above with the exception that a carbalkoxy piperazine, such as carbethoxy-p-iperazine, is used instead of 'l-methylpiperazine and the carbalkoxy or carbethoxy group removed by acid hydrolysis.
I claim:
1. Compounds having the general formula:
0 in which R is a member of the group consisting of hydrogen and methyl radicals.
4 2. 1-[l(4'-methylpiperazyl)1-4 methylthioxanthone.
3. A method of preparing compounds having the general formula:
in which R is a member of the group consisting 15 of hydrogen and methyl radicals which comprises reacting l-chloro-4-methylthioxanthone with a member of the group consisting of carboxalkylated piperazines and N-methylpiperazine in a hydrocarbon solvent and recovering said prod- 20 not therefrom.
4. A method of preparing 1-[1(4-methylpiperazyl)l-4-methylthioxanthone which comprises reacting 1-chloro--methylthioxanthone with l-methylpiperazine in a hydrocarbon sol- 25 vent and recovering said product therefrom.
SAMUEL KUSHNER.
No references cited.
Claims (2)
1. COMPOUNDS HAVING THE GENERAL FORMULA:
3. A METHOD OF PREPARING COMPOUNDS HAVING THE GENERAL FORMULA:
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US303400A US2656357A (en) | 1952-08-08 | 1952-08-08 | 1-piperazyl-4-methylthioxanthones and method of preparing same |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US303400A US2656357A (en) | 1952-08-08 | 1952-08-08 | 1-piperazyl-4-methylthioxanthones and method of preparing same |
Publications (1)
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US2656357A true US2656357A (en) | 1953-10-20 |
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US303400A Expired - Lifetime US2656357A (en) | 1952-08-08 | 1952-08-08 | 1-piperazyl-4-methylthioxanthones and method of preparing same |
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Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1057120B (en) * | 1955-10-29 | 1959-05-14 | Hoechst Ag | Process for the preparation of 1,4-disubstituted piperazines effective against schistosomiasis |
DE1060401B (en) * | 1956-11-02 | 1959-07-02 | Hoechst Ag | Process for the preparation of 1- (carboxyalkyl) -piperazines and their esters effective against schistosomiasis |
US3904631A (en) * | 1973-05-29 | 1975-09-09 | Parke Davis & Co | Novel thioxanthenone compounds and means of producing the same |
FR2282890A1 (en) * | 1974-08-30 | 1976-03-26 | Parke Davis & Co | 6-Chloro-4-methyl-1-(4-methyl-1-piperazinyl)thio-xanthen-9-ones - their 4-hydro xymethyl derivs and N-oxides, schistosomicides |
WO2005077899A2 (en) * | 2004-02-04 | 2005-08-25 | Abbott Laboratories | Amino-substituted tricyclic derivatives and methods of use |
US20050234031A1 (en) * | 2004-02-04 | 2005-10-20 | Schrimpf Michael R | Amino-substituted tricyclic derivatives and methods of use |
-
1952
- 1952-08-08 US US303400A patent/US2656357A/en not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
---|
None * |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1057120B (en) * | 1955-10-29 | 1959-05-14 | Hoechst Ag | Process for the preparation of 1,4-disubstituted piperazines effective against schistosomiasis |
DE1060401B (en) * | 1956-11-02 | 1959-07-02 | Hoechst Ag | Process for the preparation of 1- (carboxyalkyl) -piperazines and their esters effective against schistosomiasis |
US3904631A (en) * | 1973-05-29 | 1975-09-09 | Parke Davis & Co | Novel thioxanthenone compounds and means of producing the same |
FR2282890A1 (en) * | 1974-08-30 | 1976-03-26 | Parke Davis & Co | 6-Chloro-4-methyl-1-(4-methyl-1-piperazinyl)thio-xanthen-9-ones - their 4-hydro xymethyl derivs and N-oxides, schistosomicides |
WO2005077899A2 (en) * | 2004-02-04 | 2005-08-25 | Abbott Laboratories | Amino-substituted tricyclic derivatives and methods of use |
US20050234031A1 (en) * | 2004-02-04 | 2005-10-20 | Schrimpf Michael R | Amino-substituted tricyclic derivatives and methods of use |
WO2005077899A3 (en) * | 2004-02-04 | 2005-12-01 | Abbott Lab | Amino-substituted tricyclic derivatives and methods of use |
EP2258682A3 (en) * | 2004-02-04 | 2011-03-09 | Abbott Laboratories | Amino-substituted tricyclic derivatives and methods of use |
US7951791B2 (en) | 2004-02-04 | 2011-05-31 | Abbott Laboratories | Amino-substituted tricyclic derivatives and methods of use |
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