C23H28F2N4O2
Risperidone
Conditions | Yield |
---|---|
With borax; sodium hydroxide In ethanol at 70℃; for 0.5h; | 94.9% |
With borax; potassium hydroxide In ethanol at 40 - 70℃; for 0.5h; | 83.9% |
With potassium hydroxide In ethanol; water at 80℃; for 1 - 5h; Product distribution / selectivity; |
6-fluoro-3-(piperidin-4-yl)benzo[d]isoxazole hydrochloride
Risperidone
Conditions | Yield |
---|---|
With sodium carbonate In methanol at 73 - 75℃; for 4 - 4.5h; Product distribution / selectivity; | 93.6% |
With sodium carbonate In water at 25 - 55℃; for 9h; Product distribution / selectivity; | |
With sodium carbonate In water; acetonitrile at 25 - 75℃; for 8h; Product distribution / selectivity; |
3-(2-chloroethyl)-2-methyl-6,7,8,9-tetrahydro-4H-pyrido[1,2-a]pyrimidin-4-one
6-fluoro-3-(piperidin-4-yl)benzo[d]isoxazole hydrochloride
Risperidone
Conditions | Yield |
---|---|
With sodium carbonate In water at 110 - 120℃; for 0.666667h; Product distribution / selectivity; | 93.2% |
With sodium carbonate; potassium iodide In N,N-dimethyl-formamide at 80℃; for 10h; Temperature; | 76.9% |
3-(2-chloroethyl)-2-methyl-6,7,8,9-tetrahydro-4H-pyrido[1,2-a]pyrimidin-4-one
6-fluoro-3-(4-piperidinyl)benzo[d]isoxazole
Risperidone
Conditions | Yield |
---|---|
With sodium carbonate In methanol at 73 - 75℃; for 4 - 4.5h; Product distribution / selectivity; | 92.8% |
With N-ethyl-N,N-diisopropylamine In methanol at 45 - 50℃; for 70 - 100h; Product distribution / selectivity; | 77.8% |
With sodium carbonate In water at 85 - 90℃; for 4h; | 73% |
With potassium iodide; sodium carbonate In water; isopropyl alcohol |
3-(2-iodoethyl)-2-methyl-6,7,8,9-tetrahydro-4H-pyrido[1,2-a]pyrimidin-4-one
6-fluoro-3-(piperidin-4-yl)benzo[d]isoxazole hydrochloride
Risperidone
Conditions | Yield |
---|---|
With potassium carbonate In acetone for 6h; Heating / reflux; | 87.4% |
(2,4-difluorophenyl)-piperidin-4-yl-methanone oxime hydrochloride
Risperidone
Conditions | Yield |
---|---|
With sodium carbonate; potassium iodide In acetonitrile for 32h; Heating / reflux; | 81% |
With potassium carbonate; potassium iodide In acetonitrile for 30h; Heating / reflux; | 79% |
With potassium carbonate; potassium iodide In DMF (N,N-dimethyl-formamide) at 95 - 100℃; for 18h; | 77% |
With potassium carbonate; potassium iodide In 4-methyl-2-pentanone at 100 - 105℃; for 30h; | 73% |
3-{2-[4-(6-fluorobenzo[d]isoxazol-3-yl)-piperidin-1-yl]-vinyl}-2-methyl-6,7,8,9-tetrahydro-pyrido[1,2-a]pyrimidin-4-one
Risperidone
Conditions | Yield |
---|---|
With sodium cyanoborohydride; acetic acid In ethanol at 20℃; for 2.5h; | 70.9% |
3-(2-chloroethyl)-2-methyl-6,7,8,9-tetrahydro-4H-pyrido[1,2-a]pyrimidin-4-one
Risperidone
Conditions | Yield |
---|---|
With potassium hydroxide In water at 120 - 130℃; for 1.5h; | 40% |
(2,4-difluorophenyl)(4-piperidinyl)methanone oxime
Risperidone
Conditions | Yield |
---|---|
Stage #1: 3-(2-chloroethyl)-6,7,8,9-tetrahydro-2-methyl-4H-pyrido[1,2-a]pyrimidin-4-one monohydrochloride; 2,4-difluorophenyl-4-piperidinylmethanone oxime With sodium carbonate; potassium iodide In isopropyl alcohol at 20 - 82℃; for 4.16667h; Heating / reflux; Stage #2: With potassium hydroxide In water; isopropyl alcohol at 30 - 40℃; for 6h; | 99.4 %Chromat. |
Stage #1: 3-(2-chloroethyl)-6,7,8,9-tetrahydro-2-methyl-4H-pyrido[1,2-a]pyrimidin-4-one monohydrochloride; 2,4-difluorophenyl-4-piperidinylmethanone oxime With sodium carbonate; potassium iodide In isopropyl alcohol at 20 - 82℃; for 5.16667h; Heating / reflux; Stage #2: With piperidine In isopropyl alcohol at 20 - 30℃; for 12h; | |
Stage #1: 3-(2-chloroethyl)-6,7,8,9-tetrahydro-2-methyl-4H-pyrido[1,2-a]pyrimidin-4-one monohydrochloride; 2,4-difluorophenyl-4-piperidinylmethanone oxime With sodium carbonate; potassium iodide In isopropyl alcohol at 20 - 82℃; for 5.16667h; Heating / reflux; Stage #2: With sodium hydroxide In water; isopropyl alcohol at 25 - 30℃; for 12h; | |
Stage #1: 3-(2-chloroethyl)-6,7,8,9-tetrahydro-2-methyl-4H-pyrido[1,2-a]pyrimidin-4-one monohydrochloride; 2,4-difluorophenyl-4-piperidinylmethanone oxime With sodium hydroxide; potassium iodide In isopropyl alcohol at 20 - 82℃; for 5.16667h; Heating / reflux; Stage #2: With sodium hydroxide In water; isopropyl alcohol at 23 - 30℃; for 12h; |
C23H28F2N4O2
Risperidone
Conditions | Yield |
---|---|
In acetonitrile |
C23H28F2N4O2
Risperidone
Conditions | Yield |
---|---|
With potassium hydroxide In ethanol; water at 80℃; for 1 - 5h; Product distribution / selectivity; |
5-fluoro-3-(4-piperidinyl)-1,2-benzisoxazole
Risperidone
Conditions | Yield |
---|---|
With potassium iodide; sodium carbonate In N,N-dimethyl-formamide | 3.8 parts (46%) |
6-fluoro-3-(4-piperidinyl)benzo[d]isoxazole
Risperidone
Conditions | Yield |
---|---|
With potassium iodide; sodium carbonate In N,N-dimethyl-formamide | 3.8 parts (46%) |
3-(2-chloroethyl)-2-methyl-6,7,8,9-tetrahydro-4H-pyrido[1,2-a]pyrimidin-4-one
Risperidone
Conditions | Yield |
---|---|
With sodium carbonate; potassium iodide In water; 4-methyl-2-pentanone at 20 - 90℃; for 12h; Product distribution / selectivity; |
Conditions | Yield |
---|---|
In methanol at 20℃; for 0.75h; Equilibrium constant; |
C23H27FN4O2*C8Cl2N2O2
A
Risperidone
B
2,3-dicyano-5,6-dichloro-p-benzoquinone
Conditions | Yield |
---|---|
In methanol at 20℃; for 0.75h; Equilibrium constant; |
C23H27FN4O2*C12H4N4
A
Risperidone
B
7,7',8,8'-tetracyanoquinodimethane
Conditions | Yield |
---|---|
In methanol at 20℃; for 0.75h; Equilibrium constant; |
Conditions | Yield |
---|---|
In methanol at 20℃; for 0.75h; Equilibrium constant; |
Conditions | Yield |
---|---|
In methanol at 20℃; for 0.75h; Equilibrium constant; |
Conditions | Yield |
---|---|
In methanol at 20℃; for 0.75h; Equilibrium constant; |
Risperidone
Conditions | Yield |
---|---|
Multi-step reaction with 3 steps 1: hydroxylamine hydrochloride; N-methylcyclohexylamine / ethanol / 12 h / 60 °C 2: potassium tert-butylate; N-methylcyclohexylamine / water; toluene / 6 h / Reflux 3: potassium iodide; sodium carbonate / N,N-dimethyl-formamide / 10 h / 80 °C View Scheme |
Conditions | Yield |
---|---|
In methanol at 20℃; for 0.75h; Equilibrium constant; | 98% |
Conditions | Yield |
---|---|
In methanol at 20℃; for 0.75h; Equilibrium constant; | 98% |
Risperidone
2,3-dicyano-5,6-dichloro-p-benzoquinone
C23H27FN4O2*C8Cl2N2O2
Conditions | Yield |
---|---|
In methanol at 20℃; for 0.75h; Equilibrium constant; | 97% |
Risperidone
Conditions | Yield |
---|---|
With hydrogenchloride In propan-1-ol; ethanol for 0.0166667h; | 91% |
With hydrogenchloride In ethanol; water at 20℃; for 20h; | 87% |
Risperidone
risperidone hydrogenmaleate
Conditions | Yield |
---|---|
With maleic acid In ethanol at 20 - 60℃; for 21h; | 87% |
With maleic acid In ethanol | 82% |
Risperidone
risperidone mesylate
Conditions | Yield |
---|---|
With methanesulfonic acid In ethanol for 22h; | 87% |
Risperidone
Conditions | Yield |
---|---|
With L-malic acid In ethanol at 25 - 63℃; for 20.5h; | 86% |
With L-malic acid In ethanol at 20℃; | 51% |
Risperidone
C23H25(2)H2FN4O2
Conditions | Yield |
---|---|
With tris(pentafluorophenyl)borate; water-d2 In chloroform at 100℃; for 12h; Inert atmosphere; regioselective reaction; | 85% |
Risperidone
Conditions | Yield |
---|---|
With lithium aluminium tetrahydride In tetrahydrofuran at 68℃; for 6h; Inert atmosphere; | 85% |
Conditions | Yield |
---|---|
In methanol at 20℃; for 0.75h; Equilibrium constant; | 81% |
Risperidone
Conditions | Yield |
---|---|
With L-tartaric acid In ethanol for 20h; | 79% |
Conditions | Yield |
---|---|
In methanol at 20℃; for 0.75h; Equilibrium constant; | 75% |
Risperidone
7,7',8,8'-tetracyanoquinodimethane
C23H27FN4O2*C12H4N4
Conditions | Yield |
---|---|
In methanol at 20℃; for 0.75h; Equilibrium constant; | 72% |
Risperidone
A
R125239
B
C23H27FN4O4
C
paliperidone
Conditions | Yield |
---|---|
With lithium hexamethyldisilazane; phosphorous acid trimethyl ester In tetrahydrofuran; dichloromethane at -78℃; for 5h; | A 8% B 4 %Spectr. C 70% |
Conditions | Yield |
---|---|
With lithium hexamethyldisilazane; phosphorous acid trimethyl ester In dichloromethane; toluene at -78℃; for 7h; | A 8% B 66% |
With oxygen; lithium hexamethyldisilazane In diethyl ether; dichloromethane at -10℃; for 3h; | A 45% B 18% |
Stage #1: Risperidone With lithium hexamethyldisilazane; phosphorous acid trimethyl ester In dichloromethane at -78℃; Inert atmosphere; Stage #2: With potassium carbonate; ammonium chloride In dichloromethane; water pH=10 - 11; | A 8% B n/a |
Risperidone
Conditions | Yield |
---|---|
With water; iodine; sodium hydrogencarbonate at 20℃; for 4h; chemoselective reaction; | 57% |
Risperidone
Conditions | Yield |
---|---|
With N-Bromosuccinimide; dibenzoyl peroxide In tetrachloromethane for 6h; Reflux; Darkness; | 32% |
Conditions | Yield |
---|---|
Stage #1: Risperidone With lithium diisopropyl amide In tetrahydrofuran at 0℃; for 0.25h; Inert atmosphere; Stage #2: allyl bromide In tetrahydrofuran at 0 - 20℃; for 0.25h; Inert atmosphere; | A 31% B 8% |
Risperidone
paliperidone
Conditions | Yield |
---|---|
With oxygen; lithium hexamethyldisilazane In tetrahydrofuran at -30℃; for 3.5h; | 20% |
Risperidone
risperidone acetate monohydrate
Conditions | Yield |
---|---|
With water; acetic acid In hexane; acetone at 20℃; for 1h; |
The drug of Risperidone was developed by Janssen-Cilag and first released in 1994. In 1993, Risperidone was approved by the United States Food and Drug Administration (FDA) for the treatment of schizophrenia. On August 22, 2007, risperidone was approved as the only drug agent available for treatment of schizophrenia in youth ages 13–17; it was also approved for treatment of bipolar disorder in youth and children ages 10–17 at the same day, joining lithium.
The CAS registry number of Risperidone is 106266-06-2. In addition, the molecular formula is C23H27FN4O2. The IUPAC name is 3-[2-[4-(6-fluoro-1,2-benzoxazol-3-yl)piperidin-1-yl]ethyl]-2-methyl-6,7,8,9-tetrahydropyrido[1,2-a]pyrimidin-4-one. What's more, it contains the functional groups of benzisoxazole and piperidine as part of its molecular structure. And it is associated with significant weight gain and metabolic problems, as well as tardive dyskinesia and neuroleptic malignant syndrome.
Physical properties about Risperidone are:
(1)ACD/LogP: 2.68; (2)ACD/LogD (pH 5.5): 0.179; (3)ACD/LogD (pH 7.4): 1.886; (4)ACD/BCF (pH 5.5): 1; (5)ACD/BCF (pH 7.4): 10.314; (6)ACD/KOC (pH 5.5): 2.159; (7)ACD/KOC (pH 7.4): 110.125; (8)#H bond acceptors: 6; (9)#Freely Rotating Bonds: 4; (10)Polar Surface Area: 61.94 Å2; (11)Index of Refraction: 1.677; (12)Molar Refractivity: 111.747 cm3; (13)Molar Volume: 296.84 cm3; (14)Polarizability: 44.3 ×10-24cm3; (15)Surface Tension: 51.106 dyne/cm; (16)Density: 1.383 g/cm3; (17)Flash Point: 299.966 °C; (18)Enthalpy of Vaporization: 85.804 kJ/mol; (19)Boiling Point: 572.382 °C at 760 mmHg.
Preparation of Risperidone:
The preparation can start from the acylation of 4-formyl chloride-1-acetylpiperidine with benzoisooxazole in the presence of catalyst aluminium trichloride. Through deacetylation by hydrochloric acid and cyclization reaction you can get a benzoisooxazole derivative. Then the benzoisooxazole derivative can react with 3-chloroethyl-2-methyl-4H-pyrido[1,2-α ]pyrimidine-4-one hydrochloride to give the desired product in the presence of sodium carbonate, potassium iodide and dimethylcarboxamide. The reaction temperature should be controlled at 85-90 °C with heating. And the yield is about 46%.
Uses of Risperidone:
It is used to treat schizophrenia (including adolescent schizophrenia), schizoaffective disorder, the mixed and manic states associated with bipolar disorder, and irritability in people with autism. In addition, it was reported to successfully treat the symptoms of phencyclidine (PCP) psychosis due to acute intoxication and chronic use.
When you are using Risperidone, please be cautious about it as the following:
This chemical is toxic if swallowed. hen you are using it, wear suitable protective clothing. If contact it with skin, wash it immediately with plenty of ... (to be specified by the manufacturer). Moreover, in case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.).
You can still convert the following datas into molecular structure:
(1)SMILES: Cc1c(c(=O)n2c(n1)CCCC2)CCN3CCC(CC3)c4c5ccc(cc5on4)F
(2)InChI: InChI=1/C23H27FN4O2/c1-15-18(23(29)28-10-3-2-4-21(28)25-15)9-13-27-11-7-16(8-12-27)22-19-6-5-17(24)14-20(19)30-26-22/h5-6,14,16H,2-4,7-13H2,1H3
(3)InChIKey: RAPZEAPATHNIPO-UHFFFAOYAV
The toxicity data of Risperidone is as follows:
Organism | Test Type | Route | Reported Dose (Normalized Dose) | Effect | Source |
---|---|---|---|---|---|
child | TDLo | oral | 268ug/kg (0.268mg/kg) | SENSE ORGANS AND SPECIAL SENSES: OTHER: EYE BEHAVIORAL: TREMOR BEHAVIORAL: CHANGES IN MOTOR ACTIVITY (SPECIFIC ASSAY) | Annals of Pharmacotherpy. Vol. 30, Pg. 360, 1996. |
dog | LD50 | intravenous | 14100ug/kg (14.1mg/kg) | Journal of Pharmacology and Experimental Therapeutics. Vol. 244, Pg. 685, 1988. | |
dog | LD50 | oral | 18300ug/kg (18.3mg/kg) | BEHAVIORAL: MUSCLE WEAKNESS LUNGS, THORAX, OR RESPIRATION: RESPIRATORY STIMULATION GASTROINTESTINAL: "HYPERMOTILITY, DIARRHEA" | Kiso to Rinsho. Clinical Report. Vol. 27, Pg. 2991, 1993. |
man | TDLo | oral | 114ug/kg/2D-I (0.114mg/kg) | BEHAVIORAL: WAKEFULNESS BEHAVIORAL: EUPHORIA BEHAVIORAL: EXCITEMENT | American Journal of Psychiatry. Vol. 153, Pg. 1234, 1996. |
man | TDLo | oral | 429ug/kg (0.429mg/kg) | SENSE ORGANS AND SPECIAL SENSES: MIOSIS (PUPILLARY CONSTRICTION): EYE CARDIAC: PULSE RATE INCREASE WITHOUT FALL IN BP CARDIAC: EKG CHANGES NOT DIAGNOSTIC OF ABOVE | American Journal of Emergency Medicine. Vol. 16, Pg. 498, 1998. |
man | TDLo | oral | 429ug/kg/15D- (0.429mg/kg) | BRAIN AND COVERINGS: CHANGES IN SURFACE EEG BEHAVIORAL: ALTERATION OF OPERANT CONDITIONING BEHAVIORAL: ANOREXIA (HUMAN | Journal of Clinical Psychiatry. Vol. 58, Pg. 323, 1997. |
man | TDLo | oral | 3428ug/kg (3.428mg/kg) | BEHAVIORAL: "HALLUCINATIONS, DISTORTED PERCEPTIONS" CARDIAC: EKG CHANGES NOT DIAGNOSTIC OF ABOVE | Annals of Emergency Medicine. Vol. 22, Pg. 1908, 1993. |
man | TDLo | oral | 3857ug/kg (3.857mg/kg) | BEHAVIORAL: CONVULSIONS OR EFFECT ON SEIZURE THRESHOLD CARDIAC: EKG CHANGES NOT DIAGNOSTIC OF ABOVE CARDIAC: PULSE RATE | Journal of Toxicology, Clinical Toxicology. Vol. 37, Pg. 893, 1999. |
mouse | LD50 | intravenous | 26900ug/kg (26.9mg/kg) | Journal of Pharmacology and Experimental Therapeutics. Vol. 244, Pg. 685, 1988. | |
mouse | LD50 | oral | 63100ug/kg (63.1mg/kg) | Journal of Pharmacology and Experimental Therapeutics. Vol. 244, Pg. 685, 1988. | |
rat | LD50 | intravenous | 34300ug/kg (34.3mg/kg) | BEHAVIORAL: TREMOR BEHAVIORAL: CONVULSIONS OR EFFECT ON SEIZURE THRESHOLD | Kiso to Rinsho. Clinical Report. Vol. 27, Pg. 2991, 1993. |
rat | LD50 | oral | 56600ug/kg (56.6mg/kg) | Journal of Pharmacology and Experimental Therapeutics. Vol. 244, Pg. 685, 1988. | |
rat | LD50 | subcutaneous | 98mg/kg (98mg/kg) | SENSE ORGANS AND SPECIAL SENSES: PTOSIS: EYE LUNGS, THORAX, OR RESPIRATION: DYSPNEA BEHAVIORAL: SOMNOLENCE (GENERAL DEPRESSED ACTIVITY) | Kiso to Rinsho. Clinical Report. Vol. 27, Pg. 2991, 1993. |
women | TDLo | oral | 400ug/kg (0.4mg/kg) | BEHAVIORAL: MUSCLE CONTRACTION OR SPASTICITY) CARDIAC: PULSE RATE INCREASE WITHOUT FALL IN BP | American Journal of Emergency Medicine. Vol. 16, Pg. 498, 1998. |
women | TDLo | oral | 880ug/kg (0.88mg/kg) | BEHAVIORAL: SOMNOLENCE (GENERAL DEPRESSED ACTIVITY) CARDIAC: ARRHYTHMIAS (INCLUDING CHANGES IN CONDUCTION) | American Journal of Emergency Medicine. Vol. 16, Pg. 498, 1998. |
women | TDLo | oral | 1840ug/kg (1.84mg/kg) | BEHAVIORAL: "HALLUCINATIONS, DISTORTED PERCEPTIONS" BEHAVIORAL: HEADACHE VASCULAR: BP LOWERING NOT CHARACTERIZED IN AUTONOMIC SECTION | Journal of Clinical Psychiatry. Vol. 56, Pg. 514, 1995. |
women | TDLo | oral | 2mg/kg (2mg/kg) | CARDIAC: ARRHYTHMIAS (INCLUDING CHANGES IN CONDUCTION) CARDIAC: PULSE RATE INCREASE WITHOUT FALL IN BP VASCULAR: BP ELEVATION NOT CHARACTERIZED IN AUTONOMIC SECTION | Journal of Clinical Pyschopharmacology. Vol. 17, Pg. 325, 1997. |
women | TDLo | oral | 2200ug/kg (2.2mg/kg) | CARDIAC: ARRHYTHMIAS (INCLUDING CHANGES IN CONDUCTION) VASCULAR: BP ELEVATION NOT CHARACTERIZED IN AUTONOMIC SECTION | Therapie. Vol. 52, Pg. 155, 1997. |
women | TDLo | oral | 648mg/kg/77W- (648mg/kg) | BEHAVIORAL: CHANGES IN MOTOR ACTIVITY (SPECIFIC ASSAY) BEHAVIORAL: ATAXIA BEHAVIORAL: MUSCLE CONTRACTION OR SPASTICITY) | Journal of Clinical Psychiatry. Vol. 59, Pg. 478, 1998. |
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