JP5714152B2 - Aralkylpiperidine (or piperazine) derivatives and their use for the treatment of schizophrenia - Google Patents

Description

  The present invention relates to aralkyl piperidine (or piperazine) derivatives and methods for their production and use.

  Schizophrenia is a common and severe mental illness, one of the most severe and most serious of all mental illnesses, with a worldwide morbidity rate of about 1%. The morbidity rate is clearly on the rise as the social environment deteriorates and life pressure increases day by day. Many schizophrenic patients are abandoned because of the long duration, cost, and side effects, often resulting in more severe social consequences.

  Many studies have revealed that the brain dopamine system is closely related to the normal mental activity of the human body. Disruption of the dopamine system causes many neuropsychiatric diseases such as schizophrenia, neuralgia, mania, anxiety, various depressions, Parkinson's disease, and among these many diseases, schizophrenia is dopamine The relationship with the working system is the closest.

The main drugs currently in clinical use are traditional antipsychotics (eg, dopamine D ₂ receptor antagonists) and atypical antipsychotics (eg, D ₂ / 5-HT dual antagonists) Among them, traditional antipsychotic drugs are gradually deceived because they tend to cause extrapyramidal symptoms (EPS), and there are many types of atypical antipsychotic drugs, all of which improve the overall vector of schizophrenia In many cases, one symptom of positive or negative symptoms is improved, or side effects are reduced. Therefore, the search for new anti-schizophrenia drugs with low toxic side effects, fast efficacy, and wide therapeutic vectors has long been the focus of research in the global pharmaceutical industry.

In recent years, scientists have shown that dopamine receptor partial agonists reduce dopamine transmission instead of complete blockade when dopamine is overactive, and conversely, when dopaminergic activity is reduced, they cause stimulating effects, resulting in negative symptoms as well as positive symptoms of psychosis. Has been found to have a remarkable therapeutic effect, and can reduce the recurrence rate of schizophrenia through long-term use, and can improve emotional and cognitive impairment. Its anti-psychotic drug with partial dopamine D ₂ receptor agonist activity is currently researched and developed because its EPS side effects and serum prolactin levels are lower than traditional antipsychotics than atypical antipsychotics And the main development direction.

  The aralkylpiperidine (or piperazine) derivative according to the present invention can stabilize a dopaminergic system in the brain, and can have an improvement and a therapeutic action for a plurality of neuropsychiatric diseases, neuralgia, mania, schizophrenia It can be used to treat anxiety, various types of depression, Parkinson's disease, particularly schizophrenia.

  The first problem to be solved by the present invention is to overcome the defects with side effects such as the extrapyramidal symptoms of conventional drugs and high prolactin, solve clinical problems, and demand for clinical drugs An aralkyl piperidine (or piperazine) derivative that satisfies the above is disclosed.

  The second problem to be solved by the present invention is to disclose the use of said compounds for the manufacture of drugs for the treatment of schizophrenia and related neuropsychiatric diseases.

The aralkyl piperidine (or piperazine) derivative described in the present invention is a compound represented by the general structural formula (1) or a free base or salt thereof:

When the compound of the general formula (1) is a free base, they can form different salts from various inorganic acids and organic acids.

Said salt is a salt containing a pharmaceutically acceptable anion, such as hydrochloride, hydrobromide, hydroiodide, nitrate, sulfate or hydrogensulfate, phosphate or acidic phosphate, acetate , Lactate, citrate, tartrate, maleate, fumarate, gluconate, glucarate, benzoate, methanesulfonate, ethanesulfonate, benzenesulfonate, p-toluenesulfonate The salt preferably contains 0.5-3 molecules of crystal water, and the salt is preferably hydrochloride, hydrobromide, sulfate, trifluoroacetate, tartrate or methanesulfonate.

In general formula (1),
The A ring is a 5- to 7-membered heterocycle containing an N atom, and the heterocycle further contains a heteroatom arbitrarily selected from O, S, and N. Some of the A ring structures are:

  X is oxygen, an amino group or a substituted amino group,

  The structure is as follows:

  Is a single bond or a double bond.

  Is a single bond, Z is CH or N;

  When is a double bond, Z is C.

  Y is O, N, S.

  n is an integer of 1-5.

R ₁ represents hydrogen, a C ₁ -C ₄ alkyl group, a C ₅ or C ₆ alicyclic ring, a phenyl group, a substituted phenyl group or a hydroxy group.

R ₂ is hydrogen, C ₁ -C ₄ alkyl group, C ₅ or C ₆ alicyclic ring, phenyl group and substituted phenyl group, hydroxy group, amino group and substituted amino group, C ₁ -C ₄ alkoxy group, C acyl group of ₁ -C _4,
Halogen is shown. However, an alkyl group of C ₁ -C _4, alkoxy group of C ₁ -C _4, an acyl group of C ₁ -C _4, alkyl group moiety in the C ₅ or C ₆ aliphatic ring by 1-3 fluoro atoms It may be optionally substituted. The substituted phenyl group has 1-4 substituents on the phenyl ring, and the substituent is a halogen, a hydroxy group, an alkoxy group or an amino group, and the meaning of the following substituted phenyl group is the same as this.

R ₃ is selected from hydrogen, halogen, C ₁ -C ₄ alkyl group, C ₁ -C ₄ alkoxy group, amino group, substituted amino group, C ₁ -C ₄ alkyl group and C ₁ -C ₄ The alkoxy group may contain atoms such as N, S, O, and F. The substituted amino group has an alkyl group of C ₁ -C ₄ on the amino group, aliphatic ring of C ₅ or C _6, a phenyl group or substituted phenyl group, the following meanings substituted amino groups are the same as this.

R ₄ is hydrogen, C ₁ -C ₄ alkyl group, C ₅ or C ₆ alicyclic ring, phenyl group and substituted phenyl group, hydroxy group, amino group and substituted amino group, C ₁ -C ₄ alkoxy group, C acyl groups of ₁ -C _4, halogen, a kind of a carboxylic acid and carboxylic acid ester shown. However, an alkyl group of C ₁ -C _4, alkoxy group of C ₁ -C _4, an acyl group of C ₁ -C _4, alkyl group moiety in the C ₅ or C ₆ aliphatic ring by 1-3 fluoro atoms It may be optionally substituted.

R ₅ and R ₆ are hydrogen, a C ₁ -C ₄ alkyl group, a C ₅ or C ₆ alicyclic ring, a 5- or 6-membered one or two N, O, S heteroatoms containing saturated or unsaturated aliphatic ring, phenyl group and substituted phenyl group, hydroxy group, an alkoxy group of C ₁ -C _4, an acyl group of C ₁ -C _4, halogen, carboxylic acid and carboxylic acid ester, amino group and substituted amino group, a nitro group, or One of acetonitrile and the like is shown. However, an alkyl group of C ₁ -C _4, alkoxy group of C ₁ -C _4, an acyl group of C ₁ -C _4, alkyl group moiety in the C ₅ or C ₆ aliphatic ring by 1-3 fluoro atoms It may be optionally substituted.

Another preferred embodiment of the present invention is a compound of the general formula (1) and a pharmaceutically acceptable salt thereof, wherein X is oxygen, Z is CH, Y is O, N, S About.

  Another preferred embodiment of the present invention is that when X is oxygen, Z is C,

Relates to a compound of the general formula (1) and pharmaceutically acceptable salts thereof, characterized in that Y is O, N, S.

Another preferred embodiment of the present invention is a compound of the general formula (1) and a pharmaceutically acceptable salt thereof, wherein X is oxygen, Z is N, Y is O, N, S About.

Another preferred embodiment of the present invention relates to compounds of general formula (1) and their pharmaceutically acceptable salts, characterized in that when X is O, R ₃ is Cl or —OCH ₃ .
The aralkyl piperidine (or piperazine) derivative according to the present invention is characterized in that the asymmetric carbon in the structure is an achiral and a chiral carbon atom.

The aralkyl piperidine (or piperazine) derivative according to the present invention is a salt in which the salt contains a pharmaceutically acceptable anion, and the salt is hydrochloride, hydrobromide, sulfate, trifluoroacetate or methane. A sulfonate salt, the salt contains 0.5-3 molecules of crystal water, and the aralkylpiperidine (or piperazine) derivative is:
I-1 7- [4- (4- (3- (6-Chloro-benzisoxazolyl))-1-piperazinyl) -n-butoxy]
-3,4-dihydro-2 (1H) -quinolinone,
I-2 7- [4- (4- (3- (5-chloro-benzisoxazolyl))-1-piperazinyl) -n-butoxy] -3,4-dihydro-2 (1H) -quinolinone,
I-3 7- [4- (4- (3- (benzisoxazolyl))-1-piperazinyl) -n-butoxy] -3,4-dihydro-2 (1H) -quinolinone,
I-4 7- [4- (4- (3- (6-Fluoro-benzisoxazolyl))-1-piperazinyl) -n-butoxy] -3,4-dihydro-2 (1H) -quinolinone,
I-5 7- [4- (4- (3- (6-Trifluoromethyl-benzisoxazolyl))-1-piperazinyl) -n-butoxy] -3,4-dihydro-2 (1H)- Quinolinone,
I-6 7- [4- (4- (3- (6-Methyl-benzisoxazolyl))-1-piperazinyl) -n-butoxy] -3,4-dihydro-2 (1H) -quinolinone,
I-7 7- [4- (4- (3- (5-methyl-benzisoxazolyl))-1-piperazinyl) -n-butoxy] -3,4-dihydro-2 (1H) -quinolinone,
I-8 7- [4- (4- (3- (6-hydroxy-benzisoxazolyl))-1-piperazinyl) -n-butoxy] -3,4-dihydro-2 (1H) -quinolinone,
I-9 7- [4- (4- (3- (5-methoxy-benzisoxazolyl))-1-piperazinyl) -n-butoxy] -3,4-dihydro-2 (1H) -quinolinone,
I-10 7- [4- (4- (3- (5-cyano-benzisoxazolyl))-1-piperazinyl) -n-butoxy] -3,4-dihydro-2 (1H) -quinolinone,
I-11 7- [4- (4- (3- (5-bromo-benzisoxazolyl))-1-piperazinyl) -n-butoxy] -3,4-dihydro-2 (1H) -quinolinone,
I-12 7- [4- (4- (3- (7-Bromo-6-methoxy-benzisoxazolyl))-1-piperazinyl) -n-butoxy] -3,4-dihydro-2 (1H ) -Quinolinone,
II-1 7- [4- (4- (3- (6-Fluoro-benzisoxazolyl))-1-piperidinyl) -n-butoxy] -3,4-dihydro-2 (1H) -quinolinone,
II-2 7- [3- (4- (3- (6-Fluoro-benzisoxazolyl))-1-piperidinyl) -n-propoxy] -3,4-dihydro-2 (1H) -quinolinone,
II-3 7- [2- (4- (3- (6-Fluoro-benzisoxazolyl))-1-piperidinyl) -ethoxy] -3,4-dihydro-2 (1H) -quinolinone,
II-4 7- [2- (4- (3-Benzisoxazolyl) -1-piperidinyl) -ethoxy] -3,4-dihydro-2 (1H) -quinolinone,
II-5 7- [4- (4- (3- (6-chloro-benzisoxazolyl))-1-piperidinyl) -n-butoxy] -3,4-dihydro-2 (1H) -quinolinone,
II-6 7- [4- (4- (3- (5-methoxy-benzisoxazolyl))-1-piperidinyl) -n-butoxy] -3,4-dihydro-2 (1H) -quinolinone,
II-7 7- [4- (4- (3- (5-fluoro-benzisoxazolyl))-1-piperidinyl) -n-butoxy] -3,4-dihydro-2 (1H) -quinolinone,
II-8 7- [4- (4- (3- (5,6-Dimethoxy-benzisoxazolyl))-1-piperidinyl) -n-butoxy] -3,4-dihydro-2 (1H)- Quinolinone,
II-9 7- [4- (4- (3- (5-hydroxy-benzisoxazolyl))-1-piperidinyl) -n-butoxy] -3,4-dihydro-2 (1H) -quinolinone,
II-10 7- [4- (4- (3- (5,6-dihydroxy-benzisoxazolyl))-1-piperidinyl) -n-butoxy] -3,4-dihydro-2 (1H)- Quinolinone,
II-11 E-7- [4- (4- (3- (6-Fluoro-benzisoxazolyl))-1-piperidinyl) -2-butenyloxy] -3,4-dihydro-2 (1H)- Quinolinone,
II-12 Z-7- [4- (4- (3- (6-Fluoro-benzisoxazolyl))-1-piperidinyl) -2-butenyloxy] -3,4-dihydro-2 (1H)- Quinolinone,
II-13 7-(((1R, 2S) -2- (4- (3- (6-Fluoro-benzisoxazolyl))-1-piperidinyl) methyl) cyclohexyl) methoxy) -3,4-dihydro -2 (1H) -quinolinone,
II-14 7-(((1R, 2R) -2- (4- (3- (6-fluoro-benzisoxazolyl))-1-piperidinyl)
Methyl) cyclohexyl) methoxy) -3,4-dihydro-2 (1H) -quinolinone,
III-1 7- [4- (4- (3- (1,2-benzisothiazolyl))-1-piperazinyl) -n-butoxy] -3,4-dihydro-2 (1H) -quinolinone,
III-2 7- [3- (4- (3- (1,2-benzisothiazolyl))-1-piperazinyl) -n-propoxy] -3,4-dihydro-2 (1H) -quinolinone,
III-3 7- [2- (4- (3- (1,2-benzisothiazolyl))-1-piperazinyl) -ethoxy] -3,4-dihydro-2 (1H) -quinolinone,
III-4 7- [4- (4- (3- (6-Methoxy-1,2-benzisothiazolyl))-1-piperazinyl) -n-butoxy] -3,4-dihydro-2 (1H) -Quinolinone,
III-5 7- [4- (4- (3- (7-methoxy-1,2-benzisothiazolyl))-1-piperazinyl) -n-butoxy] -3,4-dihydro-2 (1H) -Quinolinone,
III-6 7- [4- (4- (3- (5-methoxy-1,2-benzisothiazolyl))-1-piperazinyl) -n-butoxy] -3,4-dihydro-2 (1H) -Quinolinone,
III-7 7- [4- (4- (3- (4-Methoxy-1,2-benzisothiazolyl))-1-piperazinyl) -n-butoxy] -3,4-dihydro-2 (1H) -Quinolinone,
IV-1 6- (4- (4- (3- (6-Fluoro-benzisoxazolyl))-1-piperidinyl) -n-butoxy) -dihydroindol-2-one,
IV-2 5- (4- (4- (3- (6-Fluoro-benzisoxazolyl))-1-piperidinyl) -n-butoxy) -2 (3H) -benzoxazolone,
IV-3 6- [4- (4- (3- (6-Fluoro-benzisoxazolyl-1-piperazinyl) -n-butoxy]-(1H) -indole,
IV-4 6- [4- (4- (3- (6-Fluoro-benzisoxazolyl))-1-piperazinyl) -n-butoxy]-(1H) -benzimidazole,
IV-5 6- [4- (4- (3- (6-Fluoro-benzisoxazolyl))-1-piperazinyl) -n-butoxy]-(1H) -indazole,
IV-6 6- [4- (4- (3- (6-Fluoro-benzisoxazolyl))-1-piperazinyl) -n-butoxy]-(1H) -benzo (1,2,3) triazole ,
IV-7 7- (4- (4- (3- (6-fluoro-benzisoxazolyl))-1-piperidinyl) -n-butoxy) -2 (1H) -quinolinone,
IV-8 7- (4- (4- (3- (6-Fluoro-benzisoxazolyl))-1-piperidinyl) -n-butoxy) -2H-benzo [b] [1,4] oxazine- 3 (4H) -on,
IV-9 7- (4- (4- (3- (6-fluoro-benzisoxazolyl))-1-piperidinyl) -n-butoxy) -3-methyl-2 (1H) -quinolinone or
IV-10 7- (4- (4- (3- (6-Fluoro-benzisoxazolyl))-1-piperidinyl) -n-butoxy) -4-methyl-2 (1H) -quinolinone It is selected from.

The present invention further relates to a composition for the treatment of schizophrenia comprising a therapeutically effective amount of a compound represented by the general structural formula (1) or a free base or salt of the compound and a medically acceptable carrier.

  The invention further relates to the use of a compound or its free base or salt for the manufacture of a medicament for the treatment of schizophrenia and other neuropsychiatric disorders. The neuropsychiatric diseases include neuralgia, mania, schizophrenia, anxiety, various types of depression, Parkinson's disease and the like.

  The specific structural formula is as shown in Table 1:

However, more preferred compounds are
II-1 7- [4- (4- (3- (6-Fluoro-benzisoxazolyl))-1-piperidinyl) -n-butoxy] -3,4-dihydro-2 (1H) -quinolinone or
III-1 7- [4- (4- (3- (1,2-benzisothiazolyl))-1-piperazinyl) -n-butoxy] -3,4-dihydro-2 (1H) -quinolinone Selected from the group.

The compound of the general formula (1) can have a chiral center, and a plurality of isomers generated by the chiral center can be produced by usual methods such as resolution, fractional crystallization, chiral synthesis, etc., and these single isomers May have better activity and less side effects than the racemate.

The compounds of the present invention can be synthesized by the following methods:
General manufacturing method:

However, D and E represent halogen, A, X, Y, Z, n, R ₁ , R ₂ , R ₃ , R ₄ , R ₅ , R ₆ are as described above, and the base is K ₂ CO ₃ , Et ₃ organic or inorganic base such as N or pyridine can be a to.

Compound I (10 mmol), Compound II (20 mmol) and anhydrous potassium carbonate (30 mmol) were added to 30 ml DMF and reacted at 60 ° C. for 12 hours.When the reaction was stopped, 100 ml of water was added to the reaction solution, and 50 ml of ethyl acetate * (3) Extract and combine the extracts, backwash with 100 ml of water, wash with saturated saline, dry over anhydrous magnesium sulfate, evaporate to dryness to obtain a white powder, suspension of the white powder in 30 ml of hexane And stirred for 20 minutes and filtered to give compound III.

Compound III (10 mmol), Compound IV (20 mmol) and anhydrous potassium carbonate (30 mmol) were added to 30 ml DMF and reacted at 80 ° C. for 5 hours.When the reaction was stopped, 100 ml of water was added to the reaction solution, and 50 ml of ethyl acetate * 3 extracted, combined extracts, backwashed with 100 ml water, washed with saturated brine, dried over anhydrous magnesium sulfate, evaporated to dryness to give an oil, salted with HCl, ethanol ( Or methanol) to give product V.

  However, Compound I can be purchased commercially or can be prepared by the related methods of the document J. Med. Chem. 1991, 34, 3316-3328 and PCT patent WO2005019215.

  Compound II can be purchased commercially or synthesized by the following method:

Some compounds III are commercially available, but related intermediates that are not readily commercially available can be produced by general synthetic methods.

  Compound IV can be produced by a general synthesis method.

Heterocyclic substituted piperidine (or piperazine) derivatives according to the present invention have a relatively high affinity for the dopamine D ₂ receptor, the majority of these compounds exhibit antagonistic activity against the receptor, compound is in vitro showing a partial agonism against D ₂ receptors
Receptor binding studies reveal.

Animal test results have shown that this class of compounds can ameliorate the associated symptoms in apomorphine model mice. Since these in vitro action targets and in vivo pharmacological models are closely related to neurological diseases caused by disruption of dopamine function, particularly schizophrenia, it is suggested that the compounds of the present invention have therapeutic effects on schizophrenia. To do.

Preferred compound II-1 has significant antischizophrenic activity, relatively good absorption after oral administration, and acute toxicity (LD ₅₀ > 2000 mg / Kg, once oral administration to mice) comparable to aripiprazole and ziprasidone However, animal model studies have shown that it is much lower than risperidone, has a negative Ames test, has a relatively large therapeutic index, and has the potential to be developed as a novel anti-schizophrenia drug .

  The derivative of the present invention can be administered to a patient in need of such treatment by oral or injection in the form of a composition. Specifically, the doctor can determine the condition, age, and sex of the patient.

  The composition comprises a therapeutically effective amount of the aralkyl piperidine (or piperazine) derivative and a medically acceptable carrier.

  Such a carrier refers to a carrier often used in the pharmaceutical field, for example, a diluent or excipient such as water; an adhesive such as a cellulose derivative, gelatin or polyvinylpyrrolidone; a filler such as starch; There are disintegrants such as calcium, sodium bicarbonate, and lubricants such as calcium stearate or magnesium stearate. Also, other adjuvants such as flavoring agents and sweeteners can be added to the composition. In the case of oral administration, it can be produced into a general solid preparation such as a tablet, powder or capsule. In the case of injection administration, it can be produced into an injection solution.

  Various dosage forms of the composition of the present invention can be prepared by a general method in the medical field, and the content of the active ingredient is 0.1% to 99.5% (weight ratio).

Overall the above, aralkyl substituted piperidine or piperazine derivative of the present invention has a relatively high affinity for dopamine D ₂ receptors, as well as having a relatively strong antagonistic activity, partial agonist for dopamine D ₂ receptors The action is also embodied. In vivo studies have shown that this class of compounds can ameliorate related symptoms in apomorphine model mice. Since these in vitro action targets and in vivo pharmacological models are closely related to schizophrenia, it is suggested that the compounds according to the present invention have a therapeutic effect on schizophrenia. Of these, II-1 has a relatively strong anti-schizophrenia effect, relatively good absorption after oral administration, and its acute toxicity (LD ₅₀ > 2000 mg / Kg, once oral administration to mice) is aripiprazole and ziprasidone It is much lower than risperidone and has the potential to be researched and developed as a new antipsychotic drug.

It shows the affinity curve of the positive drug haloperidol (haloperidol) for dopamine D ₂ receptors. ₂ shows the affinity curve of Compound II-1 for dopamine D ₂ receptor. ₂ shows the affinity curve of compound III-1 for dopamine D ₂ receptor. ₂ shows a partial agonist activity curve of Compound II-1 for dopamine D ₂ receptor. Fig. 2 shows the effect of Compound II-1 on apomorphine-induced mouse schizophrenia behavior. Fig. 2 shows the effect of Compound II-1 on apomorphine-induced mouse schizophrenia behavior.

Example 1
I-1 7- [4- (4- (6-Chloro-benzisoxazolyl) -1-piperazinyl) -n-butoxy] -3,4-dihydro-2 (1H) -quinolinone hydrochloride
1) Preparation of methyl 4-chloro-salicylate
Slowly add 5 ml of concentrated sulfuric acid dropwise to 100 ml of methanol and when the solution cools, 4-chloro-
Salicylic acid powder (17.20 g, 0.1 mol) was added, refluxed for 24 hours, cooled, a large amount of precipitate was deposited, filtered, washed with a small amount of methanol, recrystallized with absolute ethanol, 4-chloro-
15.60 g of methyl salicylate are obtained. Yield 83%.

2) Preparation of 4-chloro-N, 2-dihydroxy-benzamide Hydroxylamine hydrochloride solid (5.25 g, 75 mmol) was placed in an eggplant-shaped flask and a small amount of water was added dropwise in an ice bath to dissolve it. 15 ml of NaOH solution was added dropwise, stirred for 5 minutes, and 50 ml of dioxane solution of methyl 4-chloro-salicylate (9.3 g, 50 mmol) was added dropwise to the solution under N ₂ protection. A reddish brown precipitate was precipitated, filtered, put into an eggplant-shaped flask, 50 ml of 10% hydrochloric acid was added, refluxed for 0.5 hour, cooled to room temperature, a yellow precipitate was precipitated, filtered, and filtered with absolute ethanol. Recrystallization gives 8.25 g of 4-chloro-N, 2-dihydroxy-benzamide. Yield 88%.

3) Preparation of 3-hydroxy-6-chloro-benzisoxazole
Under N ₂ protection, 4-chloro-N, 2-dihydroxy-benzamide (8 g, 42.7 mmol) was added to 10 ml of tetrahydrofuran, the internal temperature was kept below 30 ° C., and 10 ml of SOCl ₂ was slowly added dropwise. Stir for 30 minutes, evaporate to dryness, azeotropically distill the remaining SOCl ₂ with anhydrous benzene and evaporate to dryness to give a yellow powder. The obtained powder is dissolved with 10 ml of dioxane, the internal temperature is kept below 30 ° C., 5 ml of Et ₃ N is slowly added dropwise and stirred for 30 minutes, and then 10% hydrochloric acid is brought to pH = 2. And stirred until a large amount of pale yellow precipitate is deposited, filtered and recrystallized with methanol to give 6.50 g of 3-hydroxy-6-chloro-benzisoxazole. Yield 89%.

4) Preparation of 3,6-dichlorobenzisoxazole
3-Hydroxy-6-chloro-benzisoxazole (6 g, 35 mmol), 20 ml phosphoryl chloride, 1 ml Et ₃ N were placed in a microwave reactor, reacted at 150 ° C. for 0.5 hour, and phosphoryl chloride was distilled off. The residue is diluted with 20 ml of dichloromethane, 20 g of ice-water mixture is added and stirred, the organic phase is separated, the aqueous phase is subsequently extracted with 20 ml * 2 of dichloromethane, the dichloromethane layers are combined and washed with 20 ml of saturated brine. Wash, dehydrate with anhydrous MgSO ₄ , evaporate to dryness, separate by alumina (200-300 mesh) column chromatography, eluting with dichloromethane: methanol = 200: 1, 5.2 g of 3,6-dichlorobenzisoxazole Get. Yield 79%.

5) Preparation of 6-chloro-3-piperazinyl-benzisoxazole
3,6-Dichlorobenzisoxazole (5.2 g, 27.8 mmol) and anhydrous piperazine (24 g, 278 mmol) were placed in an eggplant-shaped flask and reacted at 120 ° C. for 24 hours. After completion of the reaction, 52 ml of ice water was added to quench the reaction. Add 15 ml of 50% NaOH solution to the solution, stir for 5 minutes, extract with dichloromethane 30 ml * 3, combine the dichloromethane layers, wash with saturated brine 20 ml, dry over anhydrous MgSO ₄ and evaporate to dryness. Separated by alumina (200-300 mesh) column chromatography, dichloromethane:
Elution with methanol = 100: 1 gives 4.7 g of 6-chloro-3-piperazinyl-benzisoxazole. Yield 71%.

6) Preparation of 7- (4-chlorobutoxy) -3,4-dihydro-2 (1H) -quinolinone
1-bromo-4-chloro-butane (3.4 g, 20 mmol), anhydrous potassium carbonate powder (4.14 g, 30 mmol) and 7-hydroxy-3,4-dihydro-2 (1H) -quinolinone (1.63 g, 10 mmol). Add to 10 ml of acetone, reflux for 24 hours, evaporate and dry the reaction solution, partition with dichloromethane and 20 ml of water, extract the organic layer in turn with 20 ml of water * 2 and 20 ml of saturated brine, and dry over anhydrous magnesium sulfate. Evaporate to dryness to obtain a pale yellow powder. The obtained powder is slurry washed with 20 ml * 3 of n-hexane, filtered and dried to obtain 1.98 g of 7- (4-chlorobutoxy) -3,4-dihydro-2 (1H) -quinolinone. Yield 78%.

7) Preparation of 7- [4- (4- (6-Chloro-benzisoxazolyl) -1-piperazinyl) -n-butoxy] -3,4-dihydro-2 (1H) -quinolinone hydrochloride
7- (4-chlorobutoxy) -3,4-dihydro-2 (1H) -quinolinone (278 mg, 1.1 mmol), 6-chloro-3-piperazinyl-benzisoxazole (237 mg, 1 mmol), anhydrous potassium carbonate powder ( 414 mg, 3.3 mmol) was added to 10 ml of DMF, and the mixture was refluxed for 24 hours.The reaction solution was evaporated to dryness, dichloromethane and water were added in an amount of 20 ml each, and the organic layer was extracted with 20 ml of water * 2 and 20 ml of saturated brine, Dry over anhydrous magnesium sulfate, evaporate to dryness to obtain a pale yellow powder, dissolve in 5 ml of acetone, stir in an ice bath, precipitate a white solid, filter, wash with a small amount of acetone, dry 7- [4- (4- (6-chloro-benzisoxazolyl) -1-piperazinyl) -n-butoxy] -3,4-dihydro-2 (1H)-
260 mg of quinolinone was obtained, dissolved in 5 ml of absolute ethanol, adjusted to pH = 2 with HCl / C ₂ H ₅ OH, a white solid was precipitated, filtered, recrystallized from absolute ethanol, and 200 mg of product obtain.
Yield 38%.

Elemental analysis: C ₂₄ H ₂₇ ClN ₄ O ₃ × 2HCl (Theoretical value%: C 63.36, H 5.98, N 12.31; Actual value% C 63.11, H 5.89, N 12.01)
1HNMR (DMSO-d6): δ9.82 (s, 1H, CONH), 7.94-6.48, (6H, aromatic ring-H), 4.09-4.10 (2H,
Piperazine-H), 3.83 (t, J = 6.4Hz, 2H, O-CH2,) 3.56-3.60 (2H, piperazine-H), 3.21-3.48 (m, 6H), 2.76 (t, J = 8Hz, 2H ) 2.55 (t, J = 8Hz, 2H) 1.60-1.93 (m, 4H)
MS: m / z 454
Example 2
I-2 7- [4- (4- (5-Chloro-benzisoxazolyl) -1-piperazinyl) -n-butoxy] -3,4-dihydro-2 (1H) -quinolinone hydrochloride
In the preparation of I-1, 5-chloro-salicylic acid is used as a starting material instead of 4-chloro-salicylic acid, and the target compound is obtained in the synthesis process of Example 1.

Elemental analysis: C ₂₄ H ₂₇ ClN ₄ O ₃ × 2HCl (theoretical value: C 63.36, H 5.98, N 12.31; actual value% C 63.32, H 5.92, N 12.24)
1HNMR (DMSO-d6): δ 10.03 (s, 1H, CONH), 7.99-6.46, (6H, aromatic ring-H), 4.10-4.15 (2H,
Piperazine-H), 3.99 (t, J = 6.4Hz, 2H, O-CH2,) 3.50-3.70 (2H, piperazine-H), 3.22-3.57 (m, 6H), 2.75 (t, J = 8Hz, 2H ), 2.45 (t, J = 8Hz, 2H) 1.71-1.98 (m, 4H)
MS: m / z 454
Example 3
I-3 7- [4- (4- (Benzisoxazolyl) -1-piperazinyl) -n-butoxy] -3,4-dihydro-2 (1H) -quinolinone hydrochloride
In the preparation of I-1, salicylic acid is used as a starting material instead of methyl 4-chloro-salicylate, and the target compound is obtained in the synthesis process of Example 1.

Elemental analysis: C ₂₄ H ₂₈ N ₄ O ₃ × 2HCl (theoretical value: C 68.55, H 6.71, N 13.32; actual value% C 68.50,
(H 6.65, N 13.21)
1HNMR (DMSO-d6): δ10.00 (s, 1H, CONH), 7.96-6.48, (7H, aromatic ring-H), 4.05-4.10 (2H, piperazine-H), 3.93 (t, J = 6.4Hz , 2H, O-CH2,) 3.59-3.62 (2H, piperazine-H), 3.20-3.50 (m, 6H), 2.78 (t, J = 8Hz, 2H) 2.41 (t, J = 8Hz, 2H) 1.73- 1.93 (m, 4H)
MS: m / z 420
Example 4
I-4 7- [4- (4- (6-Fluoro-benzisoxazolyl) -1-piperazinyl) -n-butoxy] -3,4-dihydro-2 (1H) -quinolinone hydrochloride
In the preparation of I-1, instead of 4-chloro-salicylic acid, 4-fluoro-salicylic acid is used as a starting material, and the target compound is obtained in the synthesis process of Example 1.

Elemental analysis: C ₂₄ H ₂₇ FN ₄ O ₃ × 2HCl (theoretical value: C 56.36, H 5.72, N 10.96; actual value% C 56.49, H 5.75, N 10.88)
1HNMR (DMSO-d6): δ 10.08 (s, 1H, CONH), 8.02-6.48, (6H, aromatic ring-H), 4.01-4.11 (2H,
Piperazine-H), 3.97 (t, J = 6.4Hz, 2H, O-CH2,) 3.57-3.64 (2H, piperazine-H), 3.22-3.48 (m, 6H), 2.79 (t, J = 8Hz, 2H ), 2.40 (t, J = 8Hz, 2H) 1.80-1.93 (m, 4H)
MS: m / z 438
Example 5
I-5 7- [4- (4- (6-Trifluoromethyl-benzisoxazolyl) -1-piperazinyl) -n-
Butoxy] -3,4-dihydro-2 (1H) -quinolinone hydrochloride
In the preparation of I-1, instead of 4-chloro-salicylic acid, 4-trifluoromethyl-salicylic acid is used as a starting material, and the target compound is obtained in the synthesis process of Example 1.

Elemental analysis: C ₂₅ H ₂₇ F ₃ N ₄ O ₃ × 2HCl (theoretical value: C 53.48, H 5.21, N 9.98; actual value% C 53.26, H 5.18, N 9.94)
1HNMR (DMSO-d6): δ9.93 (s, 1H, CONH), 8.04-6.48, (6H, aromatic ring-H), 4.03-4.09 (2H, piperazine-H), 3.98 (t, J = 6.4Hz , 2H, O-CH2,) 3.55-3.60 (2H, piperazine-H), 3.21-3.49 (m, 6H), 2.80 (t, J = 8Hz, 2H), 2.39 (t, J = 8Hz, 2H) 1.80 -1.93 (m, 4H)
MS: m / z 488
Example 6
I-6 7- [4- (4- (6-Methyl-benzisoxazolyl) -1-piperazinyl) -n-butoxy] -3,4-dihydro-2 (1H) -quinolinone hydrochloride
In the preparation of I-1, 4-methyl-salicylic acid is used as a starting material instead of 4-chloro-salicylic acid, and the target compound is obtained in the synthesis process of Example 1.

Elemental analysis: C ₂₅ H ₃₀ N ₄ O ₃ × 2HCl (theoretical value: C 59.17, H 6.36, N 11.04; actual value% C 59.05,
(H 6.34, N 11.01)
1HNMR (DMSO-d6): δ 9.89 (s, 1H, CONH), 7.94-6.48, (6H, aromatic ring-H), 4.03-4.09 (2H, piperazine-H), 3.87 (t, J = 6.4Hz , 2H, O-CH2,) 3.57-3.60 (2H, piperazine-H), 3.21-3.51 (m, 6H), 2.80 (t, J = 8Hz, 2H), 2.44 (t, J = 8Hz, 2H), 1.79-1.93 (m, 7H)
MS: m / z 434
Example 7
I-7 7- [4- (4- (5-Methyl-benzisoxazolyl) -1-piperazinyl) -n-butoxy] -3,4-dihydro-2 (1H) -quinolinone hydrochloride
In the preparation of I-1, 5-methyl-salicylic acid is used as a starting material instead of 4-chloro-salicylic acid, and the target compound is obtained in the synthesis process of Example 1.

Elemental analysis: C ₂₅ H ₃₀ N ₄ O ₃ × 2HCl (theoretical value: C 59.17, H 6.36, N 11.04; actual value% C 58.93,
(H 6.32, N 10.97)
1HNMR (DMSO-d6): δ 9.90 (s, 1H, CONH), 7.74-6.48, (6H, aromatic ring-H), 4.09-4.18 (2H, piperazine-H), 3.88 (t, J = 6.4Hz , 2H, O-CH2,) 3.57-3.63 (2H, piperazine-H), 3.20-3.57 (m, 6H), 2.78 (t, J = 8Hz, 2H), 2.43 (t, J = 8Hz, 2H) 1.80 -2.01 (m, 7H)
MS: m / z 434
Example 8
I-8 7- [4- (4- (6-Hydroxy-benzisoxazolyl) -1-piperazinyl) -n-butoxy] -3,4-dihydro-2 (1H) -quinolinone hydrochloride
In the preparation of I-1, 4-hydroxy-salicylic acid is used as a starting material instead of 4-chloro-salicylic acid, and the target compound is obtained in the synthesis process of Example 1.

Elemental analysis: C ₂₅ H ₂₈ F ₃ N ₄ O ₃ × 2HCl (theoretical value: C 53.48, H 5.21, N 9.98; actual value% C 53.26, H 5.18, N 9.94)
1HNMR (DMSO-d6): δ 9.87 (s, 1H, CONH), 8.04-6.48, (6H, aromatic ring-H), 5.12 (b, 1H, hydroxy-H), 4.10-4.15 (2H, piperazine- H), 3.85 (, J = 6.4Hz, 2H, O-CH2,) 3.60-3.72 (2H, piperazine-H), 3.21-3.53 (m, 6H), 2.84 (t, J = 8Hz, 2H), 2.39 (t, J = 8Hz, 2H) 1.83-2.01 (m, 4H)
MS: m / z 488
Example 9
I-9 7- [4- (4- (5-Methoxy-benzisoxazolyl) -1-piperazinyl) -n-butoxy] -3,4-dihydro-2 (1H) -quinolinone hydrochloride
In the preparation of I-1, 5-methoxy-salicylic acid is used as a starting material instead of 4-chloro-salicylic acid, and the target compound is obtained in the synthesis process of Example 1.

Elemental analysis: C ₂₅ H ₃₀ N ₄ O ₃ × 2HCl (theoretical value: C 57.36, H 6.16, N 10.70; actual value% C 57.13,
(H 6.13, N 10.65)
1HNMR (DMSO-d6): δ9.92 (s, 1H, CONH), 8.04-6.48, (6H, aromatic ring-H), 4.05-4.10 (2H,
Piperazine-H), 3.80 (b, 5H, O-CH2,) 3.59-3.62 (2H, piperazine-H), 3.20-3.50 (m, 6H), 2.78 (t, J = 8Hz, 2H) 2.41 (t, J = 8Hz, 2H) 1.73-1.93 (m, 4H)
MS: m / z 450
Example 10
I-10 7- [4- (4- (5-Cyano-benzisoxazolyl) -1-piperazinyl) -n-butoxy] -3,4-dihydro-2 (1H) -quinolinone hydrochloride
In the preparation of I-1, instead of 4-chloro-salicylic acid, 5-cyano-salicylic acid is used as a starting material, and the target compound is obtained in the synthesis process of Example 1.

Elemental analysis: C ₂₅ H ₂₇ N ₅ O ₃ × 2HCl (theoretical value: C 57.92, H 5.64, N 13.51; actual value% C 57.80,
(H 5.62, N 13.48)
1HNMR (DMSO-d6): δ 10.05 (s, 1H, CONH), 7.94-6.48, (6H, aromatic ring-H), 3.95-4.07 (2H,
Piperazine-H), 3.99 (t, J = 6.4Hz, 2H, O-CH2,) 3.54-3.60 (2H, piperazine-H), 3.11-3.49 (m, 6H), 2.67 (t, J = 8Hz, 2H ), 2.39 (t, J = 8Hz, 2H) 1.81-1.98 (m, 4H)
MS: m / z 445
Example 11
I-11 7- [4- (4- (5-Bromo-benzisoxazolyl) -1-piperazinyl) -n-butoxy] -3,4-dihydro-2 (1H) -quinolinone hydrochloride
In the preparation of I-1, instead of 4-chloro-salicylic acid, 5-bromo-salicylic acid is used as a starting material, and the target compound is obtained in the synthesis process of Example 1.

Elemental analysis: C ₂₄ H ₂₇ BrN ₄ O ₃ × 2HCl (Theoretical value: C 50.37, H 5.11, N 9.79; Actual value% C 50.16, H 5.08, N 9.75)
1HNMR (DMSO-d6): δ10.01 (s, 1H, CONH), 8.01-6.48 (6H, aromatic ring-H), 4.12-4.23 (2H, piperazine-H), 3.89 (t, J = 6.4 Hz, 2H, O-CH2,) 3.50-3.54 (2H, piperazine-H), 3.11-3.5
1 (m, 6H), 2.80 (t, J = 8Hz, 2H), 2.33 (t, J = 8Hz, 2H) 1.77-1.93 (m, 4H)
MS: m / z 498
Example 12
I-12 7- [4- (4- (7-Bromo-6-methoxy-benzisoxazolyl) -1-piperazinyl) -n-butoxy] -3,4-dihydro-2 (1H) -quinolinone Hydrochloride
In the preparation of I-1, instead of 4-chloro-salicylic acid, 3-bromo-salicylic acid is used as a starting material, and the target compound is obtained in the synthesis process of Example 1.

Elemental analysis: C ₂₅ H ₂₉ BrN ₄ O ₄ × 2HCl (Theoretical value: C 49.85, H 5.19, N 9.30; Actual value% C 49.70, H 6.11, N 10.61)
1HNMR (DMSO-d6): δ9.93 (s, 1H, CONH), 7.98-6.48, (5H, aromatic ring-H), 4.05-4.10 (2H, piperazine-H), 3.95 (m, J = 6.4Hz , 5H, O-CH2,) 3.59-3.62 (2H, piperazine-H), 3.20-3.50 (m, 6H), 2.78 (t, J = 8Hz, 2H) 2.41 (t, J = 8Hz, 2H) 1.73- 1.93 (m, 4H)
MS: m / z 528
Example 13
II-1 7- [4- (4- (6-Fluoro-benzisoxazolyl) -1-piperidinyl) -n-butoxy] -3,4-dihydro-2 (1H) -quinolinone hydrochloride
1) Preparation of 1-acetyl-4- (2,4-difluorobenzoyl) piperidine
Add 1,3-difluorobenzene (6.7 g, 58.7 mmol) and ammonium chloride (13.3 g, 250 mmol) to 15 ml of dichloromethane and cool to room temperature. 50 ml of dichloromethane in which 1-acetyl-4-piperidinylcarboxylic acid chloride (9.8 g, 51.8 mmol) is dissolved is added dropwise, and the mixture is refluxed for 3 hours. After the reaction is complete, the mixture is poured into a mixture of ice and hydrochloric acid, extracted with 20 ml * 3 of dichloromethane, the organic phase is separated, dried over anhydrous magnesium sulfate, filtered and evaporated to dryness to give 5.01 g of product. Yield 36%.

2) Preparation of 2,4-difluorophenyl group- (4-piperidinyl) methanone hydrochloride
1-acetyl-4- (2,4-difluorobenzoyl) piperidine (5.6 g, 20.9 mmol) was added to 19 ml of 6N
Add to hydrochloric acid and reflux for 5 hours. Evaporate to dryness under reduced pressure, add 20 ml isopropanol to the residue, stir, filter and dry to give 4.67 g product. Yield 85%.

3) Preparation of 2,4-difluorophenyl group- (4-piperidinyl) methanone oxime hydrochloride
2,4-Difluorophenyl group- (4-piperidinyl) methanone hydrochloride (3.0 g, 11.5 mmol) and hydroxylamine hydrochloride (3.0 g, 42.8 mmol) are added to 5 ml of ethanol. 3 ml of N, N-dimethylethanolamine is added dropwise thereto, stirred at room temperature, and then refluxed for 3 hours. After completion of the reaction, the reaction mixture is cooled to room temperature, and the precipitate is filtered and dried to obtain 2.6 g of the desired compound. This is a white crystal and the yield is 96%.

4) Preparation of 4- (6-fluoro-1,2-benzisoxazolyl) -piperidine
2,4-Difluorophenyl- (4-piperidinyl) -methanone oxime hydrochloride (5.52 g, 20 mmol)
Was added to 25 ml of 50% potassium hydroxide, refluxed for 4 hours, cooled to room temperature, extracted with toluene 25 ml * 2, combined with the organic phase, dried over anhydrous magnesium sulfate, filtered, and reduced pressure Evaporate to dryness and recrystallize with diethyl ether to give 3.3 g of product. Yield 75%.

5) Preparation of 7- (4-chlorobutoxy) -3,4-dihydro-2 (1H) -quinolinone
1-bromo-4-chloro-butane (3.4 g, 20 mmol), anhydrous potassium carbonate powder (4.14 g, 30 mmol) and 7-hydroxy-3,4-dihydro-2 (1H) -quinolinone (1.63 g, 10 mmol). Add to 10 ml of acetone, reflux for 24 hours, evaporate and dry the reaction solution, partition with dichloromethane and 20 ml of water, extract the organic layer in turn with 20 ml of water * 2 and 20 ml of saturated brine, and dry over anhydrous magnesium sulfate. Evaporate to dryness to obtain a light yellow powder, slurry wash the resulting powder with 20 ml * 3 of n-hexane, filter, dry, 7- (4-chlorobutoxy) -3,4-dihydro- 1.98 g of 2 (1H) -quinolinone are obtained. Yield 78%.

6) Preparation of 7- [4- (4- (6-Fluoro-benzisoxazolyl) -1-piperidinyl) -n-butoxy] -3,4-dihydro-2 (1H) -quinolinone hydrochloride
7- (4-Chlorobutoxy) -3,4-dihydro-2 (1H) -quinolinone (297 mg, 1 mmol), 4- (6-fluoro-1,2-benzisoxazolyl) -piperidine (242 mg, 1.1 mmol) and anhydrous potassium carbonate powder (414 mg, 3.3 mmol) added to 10 ml, refluxed for 24 hours, evaporated to dryness, partitioned between dichloromethane and water 20 ml each, organic layer in turn 20 ml * 2, saturated Extract with 20 ml of brine, dry over anhydrous magnesium sulfate, evaporate to dryness to obtain a pale yellow powder, dissolve in 5 ml of acetone, stir in an ice bath, precipitate a white solid, filter, and add a small amount Washed with acetone and dried to obtain 260 mg of white powder, dissolved in absolute ethanol, HCl / EtOH was added dropwise until pH = 2,
A white precipitate is precipitated, filtered and recrystallized with absolute ethanol to give 200 mg of product. Yield 42%.

Elemental analysis: C ₂₅ H ₂₈ FN ₃ O ₃ × HCl (Theoretical value: C 63.35, H 6.17, N 8.87; Actual value: C 63.22, H 6.11, N 8.80)
1HNMR (DMSO-d6): δ 9.88 (B, 1H, CONH) 8.00-6.38 (6H, aromatic ring-H) 3.94 (t, J = 6.4Hz, 2H, O-CH2) 3.20 (m, 2H, piperidine -H) 1.51-3.02 (17H, -CH2)
MS: m / z 437
Example 14
II-2 7- [3- (4- (6-Fluoro-benzisoxazolyl) -1-piperidinyl) -n-propoxy] -3,4-dihydro-2 (1H) -quinolinone hydrochloride
In the preparation of II-1, 1-bromo-3-chloro-propane is used as a starting material in place of 1-bromo-4-chloro-butane, and the target compound is obtained in the synthesis process of Example 13.

Elemental analysis: C ₂₄ H ₂₆ FN ₃ O ₃ × HCl (Theoretical value: C 62.67, H 5.92, N 9.14; Actual value% C 62.60, H 5.95, N 9.20)
1HNMR (DMSO-d6): δ 9.88 (B, 1H, CONH) 7.95-6.52 (6H, aromatic ring-H) 3.91 (t, J = 6.4Hz, 2H, O-CH2) 3.26 (m, 2H, piperidine -H) 1.55-2.83 (15H, -CH2)
MS: m / z 423
Example 15
II-3 7- [5- (4- (6-Fluoro-benzisoxazolyl) -1-piperidinyl) -pentoxy] -3,4-dihydro-2 (1H) -quinolinone hydrochloride
In the preparation of II-1, 1-bromo-3-chloro-propane is used as a starting material instead of 1-bromo-5-chloro-pentane, and the target compound is obtained in the synthesis process of Example 13.

Elemental analysis: C ₂₆ H ₃₀ FN ₃ O ₃ × HCl (theoretical value: C 63.99, H 6.40, N 8.61; actual value% C 63.90, H 6.44, N 8.60)
1HNMR (DMSO-d6): δ 10.02 (B, 1H, CONH) 8.12-6.56, (6H, aromatic ring-H) 3.81 (t, J = 6.4 Hz, 2H, O—CH2) 3.20 (m, 2H, Piperidine-H) 1.46-2.91 (19H, -CH2)
MS (APCI): m / z 451 [M + H] +
Example 16
II-4 7-[(4-Benzisoxazolyl-1-piperidinyl) -n-butoxy] -3,4-dihydro-2 (1H) -quinolinone hydrochloride
1) Preparation of 4- (2-fluoro-phenyl) -1-methylpiperidine
Under N ₂ protection, 800 ml of THF solution of 4-chloro-N-methylpiperidine (245 g, 1.8 mol) was slowly added dropwise to 250 ml of tetrahydrofuran to which Mg powder (55.7 g, 2.3 mol) and a small amount of ethyl bromide were added. After completion of the addition, 440 ml of THF solution of 2-fluorobenzonitrile (222 g, 1.8 mol) was added dropwise to the reaction solution. After completion of the addition, the mixture was refluxed for 3 hours and reacted at room temperature for 13 hours. Pour into 2.3 L water containing 700 g NH ₄ Cl, reflux for 2 hours, extract with diethyl ether after cooling,
The extracts are combined, evaporated to dryness, fractionated, and the fraction at 124 ° C. is collected to give 224 g of product.

2) Preparation of 3- (1-methyl-4-piperidinyl) -1,2-benzisothiazole hydrochloride
85% of 4- (2-fluoro-phenyl) -1-methylpiperidine hydrochloride (28.2 g, 0.13 mmol) and hydroxylamine hydrochloride (19.2 g, 0.28 mol) in ethyl glycol (400 ml) -water (200 ml) Add 200 ml of KOH (80.8 g, 1.2 mol) aqueous solution, react under reflux for 5 hours under N ₂ protection, and after completion of the reaction, pour into 1000 ml of water, extract with diethyl ether, combine the extracts and dry. Dissolve in a small amount of acetone, adjust to pH = 2 with HCl / EtOH, precipitate a large amount of white precipitate and recrystallize with EtOH—H ₂ O to give 15.4 g of product.

3) Preparation of 3- (4-piperidinyl) -1,2 benzisothiazole hydrochloride
Phenoxyformyl chloride (8.8 g, 0.056 mol) was added to a toluene solution of 3- (1-methyl-4-piperidinyl) -1,2-benzisothiazole (12.3 g), and reacted for 16 hours under N ₂ protection, Cool, filter, and concentrate the filtrate to give an oil that is dissolved in diethyl ether, dripped petroleum ether to precipitate a white solid, 5 g of the white solid is dissolved in KOH solution and refluxed for 16 hours. Evaporate ethanol to obtain a brown oily substance, dissolve it in a small amount of acetone, add HCl / EtOH dropwise until pH = 2, precipitate a white solid, and recrystallize with methanol-water. Product 2.0g
Get.

4) Preparation of 7- [4- (4-Benzisoxazolyl-1-piperidinyl) -butoxy] -3,4-dihydro-2 (1H) -quinolinone hydrochloride
7- (4-Chlorobutoxy) -3,4-dihydro-2 (1H) -quinolinone (297 mg, 1 mmol), 3- (4-piperidinyl) -1,2-benzisothiazole (220 mg, 1 mmol), anhydrous carbonic acid Potassium powder (414 mg, 3.3 mmol) was added to 10 ml and reacted under reflux for 24 hours. The reaction solution was evaporated to dryness and partitioned between dichloromethane and water (20 ml each), and the organic layer was extracted sequentially with water (20 ml * 2) and saturated brine (20 ml). Dried over anhydrous magnesium sulfate and evaporated to dryness to obtain a pale yellow powder, dissolved in 5 ml of acetone, stirred in an ice bath to precipitate a white solid, filtered and washed with a small amount of acetone. Dried to obtain 260 mg of white powder, dissolved in absolute ethanol, HCl / EtOH was added dropwise until pH = 2, a white precipitate was precipitated, filtered, recrystallized from absolute ethanol, Get 200mg. Yield 44%.

Elemental analysis: C ₂₅ H ₂₉ N ₃ O ₃ × HCl (Theoretical value%: C 65.85, H 6.63, N 9.22; Actual value% C65.82, H 6.60, N 9.25)
1HNMR (DMSO-d6): δ 9.88 (B, 1H, CONH) 7.91-6.38 (6H, aromatic ring-H) 3.87 (t, J = 6.4Hz, 2H, O-CH2) 3.22 (m, 2H, piperidine -H) 1.58-2.99 (18H, -CH2)
MS: m / z 419
Example 17
II-5 7- [4- (4- (6-Chloro-benzisoxazolyl) -1-piperidinyl) -n-butoxy] -3,4-dihydro-2 (1H) -quinolinone hydrochloride
In the preparation of II-1, instead of 1,3-difluorobenzene, 1-chloro-3-fluoro-benzene
The target compound is obtained by the synthesis process of Example 13 from

Elemental analysis: C ₂₃ H ₂₈ ClN ₃ O ₃ × HCl (theoretical value: C 61.23, H 5.96, N 8.57; actual value% C 61.20,
(H 5.93, N 8.60)
1HNMR (DMSO-d6): δ 9.88 (B, 1H, CONH) 8.08-6.40 (6H, aromatic ring-H) 3.89 (t, J = 6.4Hz, 2H, O-CH2) 3.14 (m, 2H, piperidine -H) 1.40-2.95 (17H, -CH2)
MS: m / z 453
Example 18
II- 6 7- [4- (4- (5-Methoxy-benzisoxazolyl) -1-piperidinyl) -n-butoxy] -3,4-dihydro-2 (1H) -quinolinone hydrochloride
Preparation of (4- (2-hydroxy-5-methoxyphenyl) (1-acetyl-piperidinyl) methanone oxime hydrochloride
(4- (2-Hydroxy-5-methoxyphenyl) (1-acetyl-piperidinyl) methanone oxime hydrochloride is prepared in steps 1, 2 and 3 of synthesizing II-1 using 4-methoxyphenol as a raw material.

2) Preparation of 1-acetyl-4- (5-methoxy-1,2-benzisoxazolyl) piperidine Free (4- (2-hydroxy-5-methoxyphenyl) (1-acetyl-piperidinyl) methanone Reaction of 0.034 mol of oxime and 4.5 ml acetic anhydride at 60 ° C. for 1.5 hours, distill off the acetic anhydride to give an acylated product, which was suspended in 80 ml DMF suspended in NaH (1.1 g, 0.023 mol) The mixture was reacted at room temperature for 16 hours, poured into 300 ml of water, extracted with ethyl acetate, and the organic phase was washed successively with water and saturated brine, and dried over anhydrous MgSO ₄ to obtain an oily product. Crystallization with ether gives 3.7 g of solid and recrystallization with toluene-cyclohexane gives 2.1 g of 1-acetyl-4- (5-methoxy-1,2-benzisoxazolyl) piperidine.

3) Preparation of 4- (5-methoxy-1,2-benzisoxazolyl) piperidine hydrochloride
1-acetyl-4- (5-methoxy-1,2-benzisoxazolyl) piperidine 0.07mol and 110ml
6N HCl was refluxed for 6 hours, allowed to stand at room temperature, a large amount of white precipitate was precipitated, and recrystallized with ethanol to give 4- (5-methoxy-1,2-benzisoxazolyl) piperidine hydrochloride Get.

4) Preparation of 7- [4- (4- (5-methoxy-benzisoxazolyl) -1-piperidinyl) -n-butoxy] -3,4-dihydro-2 (1H) -quinolinone hydrochloride Examples 7- [4- (4- (5-Methoxy-benzisoxazolyl) -1-piperidinyl) -n-butoxy] -3,4-dihydro-2 (1H) -quinolinone hydrochloride in step 4 of 13 obtain. Yield 52%.

Elemental analysis: C ₂₆ H ₃₁ N ₃ O ₄ × HCl (Theoretical value%: C 64.25, H 6.64, N 8.15; Actual value% C 64.22, H
6.51, N 8.19)
1HNMR (DMSO-d6): δ 9.88 (B, 1H, CONH) 7.95-6.38 (6H, aromatic ring-H) 3.92 (t, J = 6.4Hz, 2H, O-CH2) 3.18 (m, 2H, piperidine -H) 1.54-3.02 (20H, -CH2)
MS: m / z 449
Example 19
II-7 7- [4- (4- (5-Fluoro-benzisoxazolyl) -1-piperidinyl) -n-butoxy] -3,4-dihydro-2 (1H) -quinolinone hydrochloride
In the preparation of II-1, 4-fluorophenol is used as a raw material instead of 1,3-difluorobenzene, and the target compound is obtained by the synthesis process of Example 13.

Elemental analysis: C ₂₅ H ₂₈ FN ₃ O ₃ × HCl (Theoretical value: C 63.35, H 6.17, N 8.87; Actual value% C 63.31, H 6.15, N 8.85)
1HNMR (DMSO-d6): δ 9.88 (B, 1H, CONH) 7.96-6.38 (6H, aromatic ring-H) 3.95 (t, J = 6.4Hz, 2H, O-CH2) 3.27 (m, 2H, piperidine -H) 1.56-2.83 (18H, -CH2)
MS: m / z 437
Example 20
II-8 7- [4- (4- (5,6-Dimethoxy-benzisoxazolyl) -1-piperidinyl) -n-butoxy] -3,4-dihydro-2 (1H) -quinolinone hydrochloride
In the preparation of II-1, instead of 1,3-difluorobenzene, 3 , 4-dimethoxyphenol is used as a raw material, and the target compound is obtained in the synthesis process of Example 13.

Elemental analysis: C ₂₇ H ₃₄ N ₃ O ₅ × HCl (Theoretical value%: C 62.84, H 6.64, N 8.14; Actual value% C 62.82, H
6.62, N 8.16)
1HNMR (DMSO-d6): δ 9.88 (B, 1H, CONH) 8.08-6.40 (5H, aromatic ring-H) 3.89-3.35 (m, 8H, O-CH2) 3.20 (m, 2H, piperidine-H) 1.53-2.97 (17H, -CH2)
MS: m / z 479
Example 21
II-9 7- [4- (5-Hydroxy-benzisoxazolyl) -1-piperidinyl) -n-butoxy] -3,4-dihydro-2 (1H) -quinolinone hydrochloride obtained in Example 18 The obtained 1-acetyl-4- (5-methoxy-1,2-benzisoxazolyl) piperidine (2.1 g) and 25 ml of 48% HBr solution were refluxed for 4 hours, and the reaction was continued at room temperature for 10 hours. The product was precipitated, filtered, and recrystallized with methanol-diethyl ether to give 1.0 g of 5-hydroxy-3- (4-piperidinyl) -1,2-benzisoxazole hydrobromide, In step 4 of 13, add 7- [4- (4- (5-hydroxy-benzisoxazolyl) -1-piperidinyl) -n-butoxy] -3,4-dihydro-2 (1H) -quinolinone hydrochloride obtain. Yield 49.3%.

Elemental analysis: C ₂₅ H ₂₉ N ₃ O ₄ × HCl (Theoretical value: C 63.62, H 6.41, N 8.90; Actual value% C 63.58, H 6.30, N 8.97)
1HNMR (DMSO-d6): δ 9.88 (B, 1H, CONH) 8.08-6.40 (6H, aromatic ring-H) 5.13 (b, 1H, hydroxy-H) 3.89 (t, J = 6.4Hz, 2H, O -CH2) 3.14 (m, 2H, piperidine-H) 1.40-2.95 (17H, -CH2)
MS: m / z 435
Example 22
II-10 7- [4- (5,6-Dihydroxy-benzisoxazolyl) -1-piperidinyl) -n-butoxy] -3,4-dihydro-2 (1H) -quinolinone hydrochloride Example 20 1-acetyl-4- (5,6-dimethoxy-1,2-benzisoxazolyl) piperidine (2.1 g) obtained in 1 above and 25 ml of 48% HBr solution were refluxed for 4 hours and reacted at room temperature for 10 hours. Subsequently, a white precipitate was precipitated, filtered, and recrystallized with methanol-diethyl ether to obtain 1.0 g of 5-hydroxy-3- (4-piperidinyl) -1,2-benzisoxazole hydrobromide. Further, in Step 4 of Example 13, 7- [4- (4- (5,6-dihydroxybenzisoxazolyl) -1-piperidinyl) -n-butoxy] -3,4-dihydro-2 (1H) -Obtain quinolinone hydrochloride. Yield 61%.

Elemental analysis: C ₂₅ H ₂₉ N ₃ O ₅ × HCl (Theoretical value%: C 61.53, H 6.20, N 8.61; Actual value% C 61.43, H 6.30, N 8.71)
1HNMR (DMSO-d6): δ 9.88 (B, 1H, CONH) 8.08-6.40 (5H, aromatic ring-H) 5.20 (b, 2H, hydroxy-H) 3.80 (t, J = 6.4Hz, 2H, O -CH2) 3.21 (m, 2H, piperidine-H) 1.50-2.93 (17H, -CH2)
MS: m / z 451
Example 23
II-11 (E) -7- [4- (4- (3- (6-Fluoro-benzisoxazolyl))-1-piperidinyl) -2-butenyloxy] -3,4-dihydro-2 (1H ) -Quinolinone Preparation
Using (E) -1,4-dichloro-2-butene and 4- (3- (6-fluoro-benzisoxazolyl))-1-piperidine as raw materials, the preparation method II in General Production Method 1 (E ) -3- (1-4- (4-Chloro-2-butenyl) piperidinyl))-6-fluorobenzisoxazole is prepared.

(E) -3- (1-4- (4-chloro-2-butenyl) piperidinyl))-6-fluorobenzisoxazole and 7-hydroxy-3,4-dihydro-2 (1H) -quinolinone Step 4 of IV-1 below
And reacted with E-7- [4- (4- (3- (6- (Fluoro-benzisoxazolyl))-1-piperidinyl) -2-butenyloxy] -3,4-dihydro-2 (1H) -Prepare quinolinone. Yield 52%.

Elemental analysis: C ₂₅ H ₂₆ FN ₃ O ₃ (theoretical value%: C 68.95, H 6.02, N 9.65; actual value% C 68.99, H 6.07, N 9.61)
1HNMR (DMSO-d6): δ 9.89 (B, 1H, CONH) 8.08-6.40 (5H, aromatic ring-H) 5.20 (b, 2H, hydroxy-H) 3.80 (t, J = 6.4Hz, 2H, O -CH2) 3.21 (m, 2H, piperidine-H) 1.50-2.93 (17H, -CH2)
MS: m / z 435
Example 24
II-12 (Z) -7- [4- (4- (3- (6-Fluoro-benzisoxazolyl))-1-piperidinyl) -2-butenyloxy] -3,4-dihydro-2 (1H ) -Quinolinone Preparation
By using 1,4-dichloro-2-butene and 4- (3- (6-fluoro-benzisoxazolyl))-1-piperidine as raw materials, the preparation method II in General Production Method 1 is (E) -3- (1-4- (4-Chloro-2-butenyl) piperidinyl))-6-fluorobenzisoxazole is prepared.

(E) -3- (1-4- (4-chloro-2-butenyl) piperidinyl))-6-fluorobenzisoxazole and 7-hydroxy-3,4-dihydro-2 (1H) -quinolinone Step 4 of IV-1 below
And reacted with E-7- [4- (4- (3- (6- (Fluoro-benzisoxazolyl))-1-piperidinyl) -2-butenyloxy] -3,4-dihydro-2 (1H) -Prepare quinolinone. Yield 55%.

Elemental analysis: C ₂₅ H ₂₆ FN ₃ O ₃ (theoretical value%: C 68.95, H 6.02, N 9.65; actual value% C 68.99, H 6.07, N 9.61)
1HNMR (DMSO-d6): δ9.91 (B, 1H, CONH) 8.08-6.40 (5H, aromatic ring-H) 5.20 (b, 2H, hydroxy-H) 3.80 (t, J = 6.4Hz, 2H, O -CH2) 3.21 (m, 2H, piperidine-H) 1.50-2.93 (17H, -CH2)
MS: m / z 435
Example 25
II-13 7-(((1R, 2S) -2- (4- (3- (6-Fluoro-benzisoxazolyl))-1-piperidinyl) methyl) cyclohexyl) methoxy) -3,4-dihydro -2 (1H) -Quinolinone
1) Using 1,2-dichloromethylcyclohexane and 4- (3- (6-fluoro-benzisoxazolyl))-1-piperidine as raw materials, 3- (4- ( 1-(((1R, 2S) -2- (chloromethyl) cyclohexyl) methylpiperidinyl))-6-fluoro-benzisoxazole is obtained.

2) 3- (4- (1-(((1R, 2S) -2- (chloromethyl) cyclohexyl) methylpiperidinyl))-6-fluoro-benzisoxazole and 7-hydroxy-3,4-dihydro -2 (1H) -quinolinone as a raw material and reacted in Step 4 of IV-1 below to produce 7-(((1R, 2S) -2- (4- (3- (6-fluoro-benzisoxazolyl) ))-1-Piperidinyl) methyl) cyclohexyl) methoxy) -3,4-dihydro-2 (1H)-
Get quinolinone. Yield 65%.

Elemental analysis: C ₂₉ H ₃₄ FN ₃ O ₃ (theoretical value: C 70.85, H 6.97, N 8.55; actual value% C 70.81, H 6.90, N 8.61)
1HNMR (DMSO-d6): δ9.889 (B, 1H, CONH) 8.08-6.40 (5H, aromatic ring-H) 5.20 (b, 2H, hydroxy-H) 3.80 (t, J = 6.4Hz, 2H, O -CH2) 3.21 (m, 2H, piperidine-H) 1.50-2.93 (17H, -CH2)
MS: m / z 491
Example 26
II-14 7-(((1R, 2R) -2- (4- (3- (6-Fluoro-benzisoxazolyl))-1-piperidinyl) methyl) cyclohexyl) methoxy) -3,4-dihydro -2 (1H) -Quinolinone
1) Using (1R, 2R) -1,2-dichloromethylcyclohexane and 4- (3- (6-fluoro-benzisoxazolyl))-1-piperidine as raw materials, the preparation method III in General Production Method 1 3- (4- (1-(((1R, 2R) -2- (chloromethyl) cyclohexyl) methylpiperidinyl))-6-fluoro-benzisoxazole is obtained.

2) 3- (4- (1-(((1R, 2R) -2- (chloromethyl) cyclohexyl) methylpiperidinyl))-6-fluoro-benzisoxazole and 7-hydroxy-3,4-dihydro -2 (1H) -quinolinone as a raw material and reacted in Step 4 of IV-1 below to produce 7-(((1R, 2R) -2- (4- (3- (6-fluoro-benzisoxazolyl) ))-1-Piperidinyl) methyl) cyclohexyl) methoxy) -3,4-dihydro-2 (1H)-
Get quinolinone. Yield 65%.

Elemental analysis: C ₂₉ H ₃₄ FN ₃ O ₃ (theoretical value: C 70.85, H 6.97, N 8.55; actual value% C 70.81, H 6.90, N 8.61)
1HNMR (DMSO-d6): δ9.889 (B, 1H, CONH) 8.08-6.40 (5H, aromatic ring-H) 5.20 (b, 2H, hydroxy-H) 3.80 (t, J = 6.4Hz, 2H, O -CH2) 3.21 (m, 2H, piperidine-H) 1.50-2.93 (17H, -CH2)
MS: m / z 491
Example 27
III-1 7- [4- (1,2-Benzisothiazol-3-yl) -1-piperazinyl) -n-butoxy] -3,4-dihydro-2 (1H) -quinolinone hydrochloride
1) Preparation of 7- (4-chlorobutoxy) -3,4-dihydro-2 (1H) -quinolinone
1-bromo-4-chloro-butane (3.4 g, 20 mmol), anhydrous potassium carbonate powder (4.14 g, 30 mmol) and 7-hydroxy-3,4-dihydro-2 (1H) -quinolinone (1.63 g, 10 mmol). Add to 10 ml of acetone, reflux for 24 hours, evaporate and dry the reaction solution, and partition with dichloromethane and water (20 ml each). Extract the organic layer with water (20 ml * 2) and saturated brine (20 ml), and dry over anhydrous magnesium sulfate. Evaporate to dryness to obtain a light yellow powder, slurry wash the resulting powder with 20 ml * 3 of n-hexane, filter, dry, 7- (4-chlorobutoxy) -3,4-dihydro- 1.98 g of 2 (1H) -quinolinone are obtained. Yield 78%.

2) Preparation of 4- (1,2-benzisothiazol-3-yl) -1-piperazine
3-Chloro- (1,2-benzisothiazole) (14 g, 200 mmol) and anhydrous piperazine (6.8 g, 40 mmol) were placed in an eggplant-shaped flask and heated at 125 ° C. for 24 hours. After completion of the reaction, 52 ml of ice water was added. The reaction was quenched, an additional 3.2 g of 50% NaOH solution was added, stirred for 5 minutes, extracted with 50 ml * 3 of CH ₂ Cl ₂ , and the organic layer was washed with 50 ml * 2 of ice water and 50 ml * 2 of saturated brine, respectively. And dried over anhydrous MgSO4 to give 4- (1,2-benzisothiazol-3-yl) -1-piperazine.

3) Preparation of 7- [4- (1,2-Benzisothiazol-3-yl) -1-piperazinyl) -n-butoxy] -3,4-dihydro-2 (1H) -quinolinone hydrochloride
7- (4-Chlorobutoxy) -3,4-dihydro-2 (1H) -quinolinone (297 mg, 1 mmol), 4- (1,2-benzisothiazol-3-yl) -1-piperidine (242 mg, 1.1 mmol) and anhydrous potassium carbonate powder (414 mg, 3.3 mmol) added to 10 ml, refluxed for 24 hours, evaporated to dryness, partitioned between dichloromethane and water 20 ml each, organic layer in turn 20 ml * 2, saturated Extract with 20 ml of brine, dry over anhydrous magnesium sulfate, evaporate to dryness to obtain a pale yellow powder, dissolve in 5 ml of acetone, stir in an ice bath, precipitate a white solid, filter, Of ethanol, adjust to pH = 2 with HCl / EtOH, precipitate a white solid and filter to give 260 mg of product. Yield 59%.

Elemental analysis: C ₂₄ H ₂₈ N ₄ O ₂ S × 2HCl (theoretical value: C 66.03, H 6.46, N 12.80; actual value% C 66.10, H 6.40, N 12.70)
¹ HNMR (DMSO-d ₆ ): δ9.98 (s, 1H, CONH) , 8.13-6.45, (7H, aromatic ring -H), 4.05-4.10 (2H, piperazine--H), 3.95 (t, J = 6.4Hz, 2H, O-CH 2 ,) 3.59-3.62 (2H, Piperazine-H), 3.20-3.50 (m, 6H), 2.78 (t, J = 8Hz, 2H) 2.41 (t, J = 8Hz, 2H) 1.73-1.93 (m, 4H)
MS: 437 [M + H] +
Example 28
III-2 7- [3- (1,2-Benzisothiazolyl) -1-piperazinyl) -n-propoxy] -3,4-dihydro-2 (1H) -quinolinone hydrochloride
Using 1-bromo-3-chloro-propane as a raw material, the desired product is prepared by the general method 1.

Elemental analysis: C ₂₃ H ₂₆ N ₄ O ₂ S × 2HCl (theoretical value: C 55.75, H 5.70, N 11.31; actual value% C 55.69, H 5.81, N 11.30)
¹ HNMR (DMSO-d ₆ ): δ10.02 (s, 1H, CONH), 8.05-6.50, (7H, aromatic ring-H), 4.07-4.12 (2H,
Piperazine -H), 3.95 (t, J = 6.4Hz, 2H, O-CH 2,) 3.62-3.66 (2H, piperidine -H), 3.15-3.47 (m, 6H ), 2.80 (t, J = 8Hz, 2H), 2.47 (t, J = 8Hz, 2H) 1.89-2.15 (m, 2H)
MS: m / z 423 [M + H] ⁺
Example 29
III-3 7- [2- (1,2-Benzisothiazolyl) -1-piperazinyl) -ethoxy] -3,4-dihydro-
2 (1H) -Quinolinone hydrochloride
1-Bromo-2-chloro-ethane is used as a raw material, and the desired product is obtained by the general production method 1.

Elemental analysis: C ₂₂ H ₂₄ N ₄ O ₂ S × 2HCl (theoretical value: C 54.88, H 5.44, N 11.64; actual value% C 54.87, H 5.40, N 11.60)
¹ HNMR (DMSO-d ₆ ): δ10.02 (s, 1H, CONH), 8.01-6.50, (7H, aromatic ring-H), 4.12-4.18 (2H,
Piperazine -H), 3.99 (t, J = 6.4Hz, 2H, O-CH 2,) 3.69-3.78 (2H, piperidine -H), 3.25-3.57 (m, 6H ), 2.74 (t, J = 8Hz, 2H), 2.68 (t, J = 8Hz, 2H)
MS: m / z 409 [M + H] ⁺
Example 30
III-4 7- [4- (6-Methoxy-1,2-benzisothiazolyl) -1-piperazinyl) -n-butoxy] -3,4-dihydro-2 (1H) -quinolinone hydrochloride
1) Preparation of 6-methoxy- (1,2-benzisothiazolyl) -1-piperazine
Prepared with reference to the method of J. Med. Chem. 1991.34. 3316-3328. Yield 20%.

2) 7- [4- (6-Methoxy-1,2-benzisothiazolyl) -1-piperazinyl) -n-butoxy] -3,4-
Dihydro-2 (1H) -quinolinone hydrochloride 7- [4- (6-methoxy-1,2-benzisothiazolyl) -1-piperazinyl) -n-butoxy] -3 by the procedure of Step 7 of Example 1 1,4-dihydro-2 (1H) -quinolinone hydrochloride is prepared. Yield 40%.

Elemental analysis: C ₂₅ H ₃₀ N ₄ O ₃ S × 2HCl (Theoretical value: C 55.65, H 5.98, N 10.38; Actual value% C 55.60, H 5.95, N 10.30)
¹ HNMR (DMSO-d ₆ ): δ10.01 (s, 1H, CONH), 8.21-6.56, (6H, aromatic ring-H), 4.08-4.15 (2H,
Piperazine-H), 3.79 (m, 5H, O-CH ₂ ) 3.52-3.60 (2H, piperazine-H), 3.16-3.48 (m, 6H), 2.79 (t, J = 8Hz, 2H), 2.47 ( t, J = 8Hz, 2H) 1.82-2.01 (m, 4H)
MS: m / z 466
Example 31
III-5 7- [4- (7-Methoxy-1,2-benzisothiazolyl) -1-piperazinyl) -n-butoxy] -3,4-dihydro-2 (1H) -quinolinone hydrochloride
1) Preparation of 7-methoxy- (1,2-benzisothiazolyl) -1-piperazine
Prepared with reference to the method of J. Med. Chem. 1991.34. 3316-3328. Yield 35%.

2) 7- [4- (7-Methoxy-1,2-benzisothiazolyl) -1-piperazinyl) -n-butoxy] -3,4-
Dihydro-2 (1H) -quinolinone hydrochloride 7- [4- (7-methoxy-1,2-benzisothiazolyl) -1-piperazinyl) -n-butoxy] -3 by the procedure of Step 7 of Example 1 1,4-dihydro-2 (1H) -quinolinone hydrochloride is prepared. Yield 40%.

Elemental analysis: C ₂₅ H ₃₀ N ₄ O ₃ S × 2HCl (theoretical value: C 55.65, H 5.98, N 10.38; actual value% C 55.62, H 5.75, N 10.37)
¹ HNMR (DMSO-d ₆ ): δ10.05 (s, 1H, CONH), 8.16-6.50, (6H, aromatic ring-H), 4.10-4.18 (2H,
Piperazine-H), 3.89 (m, 5H, O-CH ₂ ) 3.51-3.60 (2H, piperazine-H), 3.22-3.48 (m, 6H)
, 2.76 (t, J = 8Hz, 2H), 2.44 (t, J = 8Hz, 2H) 1.72-1.96 (m, 4H)
MS: m / z 466
Example 32
III-6 7- [4- (5-Methoxy-1,2-benzisothiazolyl) -1-piperazinyl) -n-butoxy] -3,4-dihydro-2 (1H) -quinolinone hydrochloride
1) Preparation of 5-methoxy- (1,2-benzisothiazolyl) -1-piperazine
Prepared with reference to the method of J. Med. Chem. 1991.34. 3316-3328. Yield 36%.

2) 7- [4- (5-Methoxy-1,2-benzisothiazolyl) -1-piperazinyl) -n-butoxy] -3,4-
Dihydro-2 (1H) -quinolinone hydrochloride 7- [4- (5-methoxy-1,2-benzisothiazolyl) -1-piperazinyl) -n-butoxy] -3 by the procedure of Step 7 of Example 1 1,4-dihydro-2 (1H) -quinolinone hydrochloride is prepared. Yield 39%.

Elemental analysis: C ₂₅ H ₃₀ N ₄ O ₃ S × 2HCl (Theoretical value: C 55.65, H 5.98, N 10.38; Actual value% C 55.62, H 5.75, N 10.37)
¹ HNMR (DMSO-d ₆ ): δ10.00 (s, 1H, CONH) , 8.17-6.39 (6H, aromatic ring -H), 4.12-4.18 (2H, piperazine--H), 3.91 (m, 5H , O-CH 2,) 3.54-3.60 ( 2H, piperazine-H), 3.18-3.47 (m, 6H)
, 2.69 (t, J = 8Hz, 2H), 2.45 (t, J = 8Hz, 2H) 1.79-1.98 (m, 4H)
MS: m / z 466
Example 33
III-7 7- [4- (4-Methoxy-1,2-benzisothiazolyl) -1-piperazinyl) -n-butoxy] -3,4-dihydro-2 (1H) -quinolinone hydrochloride
1) Preparation of 4-methoxy- (1,2-benzisothiazolyl) -1-piperazine
Prepared with reference to the method of J. Med. Chem. 1991.34. 3316-3328. Yield 41%.

2) 7- [4- (4-Methoxy-1,2-benzisothiazolyl) -1-piperazinyl) -n-butoxy] -3,4-
Preparation of dihydro-2 (1H) -quinolinone hydrochloride 7- [4- (4-methoxy-1,2-benzisothiazolyl) -1-piperazinyl) -n-butoxy] by the operation of Step 7 of Example 1 -3,4-Dihydro-2 (1H) -quinolinone hydrochloride is prepared. Yield 39%.

Elemental analysis: C ₂₅ H ₃₀ N ₄ O ₃ S × 2HCl (theoretical value: C 55.65, H 5.98, N 10.38; actual value% C 55.63, H 5.71, N 10.36)
¹ HNMR (DMSO-d ₆ ): δ10.02 (s, 1H, CONH), 8.14-6.49, (6H, aromatic ring-H), 4.10-4.16 (2H,
Piperazine-H), 3.87 (m, 5H, O-CH ₂ )) 3.60-3.68 (2H, piperazine-H), 3.19-3.54 (m, 6H), 2.75 (t, J = 8Hz, 2H), 2.42 ( t, J = 8Hz, 2H) 1.71-1.80 (m, 4H)
MS: m / z 466
Example 34
IV-1 6- (4- (4- (3- (6-Fluoro-benzisoxazolyl))-1-piperidinyl) -n-butoxy) -dihydroindol-2-one
1) Add 2 ml of pyridine to 30 ml of dichloromethane solution of 3-methoxyaniline (4.92 g, 40 mmol), stir for 5 minutes and maintain the internal temperature at 0 ^° C. while keeping chloroacetyl chloride (6.78 g, 60 mmol) 20 ml of dichloromethane solution was slowly added dropwise, and after completion of the addition, reacted at room temperature for 12 hours,
The reaction was stopped, and the reaction solution was washed with 5% HCl 30 ml * 3, 5% NaOH 30 ml * 3, water 30 ml * 3, saturated brine 30 ml, dried over anhydrous magnesium sulfate, filtered, and filtered. The solvent is distilled off to obtain 6.43 g of 2-chloro-N- (3-methoxyphenyl) acetamide. Yield 80.7%.

2) 2-Chloro-N- (3-methoxyphenyl) acetamide (3.1 g, 16 mmol) and anhydrous AlCl ₃ powder (4.4 g, 32 mmol) were heated and stirred at 120 ° C. for 10 minutes to cause a molten state to appear, and 40 minutes The temperature was gradually raised to 240 ° C., stirred for 5 minutes, allowed to cool to obtain a brown powder, and the solid powder was poured into a mixture of 100 g of crushed ice and 50 ml of concentrated hydrochloric acid, stirred for 10 minutes, and then stirred for 10 minutes. Reflux for minutes, cool, precipitate a pale yellow powder, filter and recrystallize with water to give 1.5 g of 6-hydroxy-indoline-2-one. Yield 62%.

3) 1-Bromo-4-chloro-butane (9.4 g, 60 mmol) is dissolved in 50 ml DMF and 4- (6-fluoro-1,2-benzisoxazolyl) -piperidine (4.4 g, 20 mmol) and Anhydrous potassium carbonate powder (8.2 g, 60 mmol) was added and stirred at room temperature for 48 hours to stop the reaction, 100 ml of water and ethyl acetate were added to the reaction solution, shaken, and the aqueous layer was extracted with 100 ml of ethyl acetate. Combine the ethyl acetate layer, backwash with 200 ml of water, dehydrate with anhydrous magnesium sulfate, filter, collect the filtrate to 50 ml, extract with 5 ml of HCl 30 ml × 3, combine the extract, 5% The pH value was adjusted to 7 with NaOH, and further extracted with 30 ml x 3 ethyl acetate, the extracts were combined, dehydrated and evaporated to dryness, 3- (1- (4-chlorobutyl) -4-piperidinyl) 1.8 g of -6-fluoro-benzisoxazole are obtained. Yield 30%.

4) 6-hydroxy-indoline-2-one (0.75 g, 5 mmol), 3- (1- (4-chlorobutyl) -4-piperidinyl) -6-fluoro-benzisoxazole (1.55 g, 5 mmol) and anhydrous carbonic acid Potassium (1.38 g, 10 mmol) was added to 10 ml of DMF, reacted at 60 ° C. for 12 hours, 20 ml of water was added to the reaction solution, stirred for 30 minutes, 2 ml of absolute ethanol was added, sonicated for 5 minutes, filtered. , 6- (4- (4- (3- (6-Fluoro-benzisoxazolyl))-1-piperidinyl) -n-butoxy) -dihydroindol-2-one is obtained. Yield 32%.

Elemental analysis: C ₂₄ H ₂₆ FN ₃ O ₃ (Theoretical value: C 69.07, H 6.28, N 9.92; Actual value% C 69.12, H 6.38, N 9.95)
¹ HNMR (DMSO-d ₆ ): δ10.08 (s, 1H, CONH), 8.23-6.65, (6H, aromatic ring-H), 4.34-4.12 (2H,
Piperazine-H), 3.76 (m, 5H, O-CH ₂ )) 3.45-3.78 (2H, piperazine-H), 3.21-3.77 (m, 6H), 3.10 (t, J = 8Hz, 2H), 2.30 ( t, J = 8Hz, 2H) 1.71-1.90 (m, 4H)
MS: m / z 423
Example 35
IV-2 5- (4- (4- (3- (6-Fluoro-benzisoxazolyl))-1-piperidinyl) -n-butoxy) -2 (3H) -benzoxazolone
1) To a solution of benzoxazolone (2.0 g, 7.4 mmol) in trifluoroacetic acid (30 ml), quickly add 30 ml of a trifluoroacetoxyiodobenzene (7.64 g, 8.9 mmol) solution in trifluoroacetic acid. The reaction was stopped, most of the trifluoroacetic acid was distilled off, 5% NaHCO ₃ aqueous solution was added dropwise to pH = 8 with an ice bath, and the mixture was extracted with ethyl acetate 20 ml × 3. Combined, washed with 50 ml of saturated brine, dried over anhydrous magnesium sulfate, filtered, and the filtrate was evaporated to dryness to give an oily product that was separated by neutral alumina (200-300 mesh) column chromatography. Elute with CH ₂ Cl ₂ : MeOH = 200: 1 to CH ₂ Cl ₂ : MeOH = 100: 1, combine the eluent and evaporate to dryness to give 500 mg of 6-hydroxybenzisoxazole. Yield 45%.

  2) Using 6-hydroxybenzisoxazole and 3- (1- (4-chlorobutyl) -4-piperidinyl) -6-fluoro-benzisoxazole as raw materials, reacting in step 4 of IV-1 to produce 5- (4 -(4- (3- (6-Fluoro-benzisoxazolyl))-1-piperidinyl) -n-butoxy) -2 (3H) -benzoxazolone is obtained. Yield 56%.

Elemental analysis: C ₂₃ H ₂₄ FN ₃ O ₃ (theoretical value: C 67.47, H5.91, N 10.26; actual value: C 67.30, H 5.99, N 10.34)
¹ HNMR (DMSO-d ₆ ): δ10.01 (s, 1H, CONH), 8.18-6.77, (6H, aromatic ring-H), 4.17-4.16 (2H,
Piperazine-H), 3.87 (m, 5H, O-CH ₂ )) 3.60-3.78 (2H, piperazine-H), 3.20-3.58 (m, 6H), 2.75 (t, J = 8Hz, 2H), 2.52 ( t, J = 8Hz, 2H) 1.71-1.85 (m, 4H)
MS: m / z 409
Example 36
IV-3 Preparation of 6- [4- (4- (3- (6-Fluoro-benzisoxazolyl))-1-piperazinyl) -n-butoxy]-(1H) -indole
6-Hydroxyindole and 3- (1- (4-chlorobutyl) -4-piperidinyl) -6-fluoro-benzisoxazole were used as raw materials and reacted in Step 4 of IV-1 to give 6- [4- (4- (3- (6-Fluoro-benzisoxazolyl))-1-piperazinyl) -n-butoxy]-(1H) -indole is obtained.

Elemental analysis: C ₂₃ H ₂₄ FN ₃ O ₂ (theoretical value: C 70.21, H 6.15, N 10.68; actual value: C 70.25, H 6.17, N 10.61)
¹ HNMR (DMSO-d ₆ ): 8.23-6.77, (6H, aromatic ring -H), 4.15-4.19 (2H, piperazine--H), 3.87 (m, 5H , O-CH 2,) 3.60-3.72 (2H, piperazine--H), 3.20-3.58 (m, 6H), 2.75 (t, J = 8Hz, 2H), 2.52 (t, J = 8Hz, 2H) 1.71-1.85 (m, 4H)
MS: m / z 393
Example 37
IV-4 Preparation of 6- [4- (4- (3- (6-Fluoro-benzisoxazolyl))-1-piperazinyl) -n-butoxy]-(1H) -benzimidazole
1) 3-Hydroxy-o-phenylenediamine (1.24 g, 10 mmol) was added to 10 ml of formic acid and refluxed for 2 hours. Most of the formic acid was distilled off, adjusted to pH 7 with saturated NaHCO ₃ solution, Extracted with 30 ml of acetate 30 ml, the extract was washed with saturated brine, dried over anhydrous magnesium sulfate, filtered, the filtrate was evaporated to dryness and purified by neutral alumina column chromatography, 6-hydroxybenzimidazole Get 600mg.

6-Hydroxybenzimidazole and 1- (4-chlorobutyl) -4-piperidinyl) -6-fluoro-benzisoxazole were used as raw materials and reacted in Step 4 of IV-1 to give 6- [4- (4- (3 -(6-Fluoro-benzisoxazolyl))-1-piperazinyl) -n-butoxy]-(1H) -benzimidazole is obtained. Yield 75%.

Elemental analysis: C ₂₃ H ₂₃ FN ₄ O ₂ (theoretical value: C 66.99, H 5.88, N 14.20; actual value% C 66.73, H 5.83, N 13.99)
¹ HNMR (DMSO-d ₆ ): 8.17-6.49, (6H, aromatic ring -H), 4.18-4.19 (2H, piperazine--H), 3.86 (m, 5H , O-CH 2,) 3.66-3.68 (2H, piperazine--H), 3.25-3.54 (m, 6H), 2.79 (t, J = 8Hz, 2H), 2.42 (t, J = 8Hz, 2H) 1.71-1.90 (m, 4H)
MS: m / z 394
Example 38
IV-5 Preparation of 6- [4- (4- (3- (6-Fluoro-benzisoxazolyl))-1-piperazinyl) -n-butoxy]-(1H) -indazole
6-aminoindazole (2.66 g, 20 mmol) was added to 20% dilute sulfuric acid and reacted at 170 ° C. for 1 hour in a microwave reactor, with a microwave output of 600 W. The reaction is stopped, cooled, adjusted to pH 7 with 5% NaOH, stirred for 10 minutes, the precipitate is precipitated and recrystallized with water to give 1.5 g of 6-hydroxyindazole. Yield 51%.

6-hydroxyindazole and 3- (1- (4-chlorobutyl) -4-piperidinyl) -6-fluoro-
Using benzisoxazole as a raw material, reacting in step 4 of IV-1 to produce 6- [4- (4- (3- (6-fluoro-benzisoxazolyl))-1-piperazinyl) -n-butoxy] -(1H) -Indazole is obtained. Yield 62%.

Elemental analysis: C ₂₃ H ₂₃ FN ₄ O ₂ (theoretical value: C 66.99, H 5.88, N 14.20; actual value% C 66.71, H 5.80, N 13.89)
¹ HNMR (DMSO-d ₆ ): 8.21-6.49, (6H, aromatic ring -H), 4.18-4.19 (2H, piperazine--H), 3.87 (m, 5H , O-CH 2,) 3.66-3.75 (2H, piperazine--H), 3.25-3.54 (m, 6H), 2.79 (t, J = 8Hz, 2H), 2.42 (t, J = 8Hz, 2H) 1.71-1.90 (m, 4H)
MS: m / z 394
Example 39
IV-6 6- [4- (4- (3- (6-Fluoro-benzisoxazolyl))-1-piperazinyl) -n-butoxy]-(1H) -benzo (1,2,3) triazole Preparation of
1) 500 mg of Pd / C was added to a methanol solution of 3-nitro-4-aminophenol (4.6 g, 30 mmol), hydrogenated at room temperature for 2 hours to stop the reaction, Pd / C was removed by filtration, 4.1 g of hydroxy-o-phenylenediamine are obtained. Yield 95%.

2) Add 3-hydroxy-o-phenylenediamine (1.0 g, 8 mmol) to 0.2N HCl solution, slowly add 600 mg of NaNO ₂ solid, add and then stir at room temperature for 1.5 hours to stop the reaction, Extract with 30 ml of acetate, backwash the extract with 20 ml of 15% HCl, dry the organic layer, filter, evaporate to dryness, and 6-hydroxy- (1H) -benzo (1,2 3) Triazole is obtained.

3) 6-hydroxy- (1H) -benzo (1,2,3) triazole and 3- (1- (4-chlorobutyl) -4-piperidinyl) -6-fluoro-benzisoxazole as raw materials, In step 4 of 6- [4- (4- (3- (6-fluoro-benzisoxazolyl))-1-piperazinyl) -n-butoxy]-(1H) -benzo (1,2 3) Triazole is obtained. Yield 70%.

Elemental analysis: C ₂₁ H ₂₂ FN ₅ O ₂ (theoretical value: C 63.78, H 5.61, N 17.71; actual value% C 64.01, H 5.63, N 17.78)
¹ HNMR (DMSO-d ₆ ): 8.21-6.49, (6H, aromatic ring -H), 4.18-4.19 (2H, piperazine--H), 3.87 (m, 5H , O-CH 2,) 3.66-3.75 (2H, piperazine--H), 3.25-3.54 (m, 6H), 2.79 (t, J = 8Hz, 2H), 2.42 (t, J = 8Hz, 2H) 1.71-1.90 (m, 4H)
MS: m / z 395
Example 40
IV-7 Preparation of 7- (4- (4- (3- (6-Fluoro-benzisoxazolyl))-1-piperidinyl) -n-butoxy) -2 (1H) -quinolinone
7-Hydroxy-2 (1H) -quinolinone and 3- (1- (4-chlorobutyl) -4-piperidinyl) -6-fluoro-benzisoxazole were used as raw materials and reacted in Step 4 of IV-1, (4- (4- (3- (6-Fluoro-benzisoxazolyl))-1-piperidinyl) -n-butoxy) -2 (1H) -quinolinone is obtained. Yield 52%.

Elemental analysis: C ₂₄ H ₂₄ FN ₃ O ₃ (theoretical value: C 68.39, H5.74, N 9.97; actual value: C 68.35, H 5.95, N 10.02
¹ HNMR (DMSO-d ₆ ): δ10.03 (s, 1H, CONH), 8.16-6.77, (6H, aromatic ring-H), 4.11-4.16 (2H,
Piperazine-H), 3.81 (m, 5H, O-CH ₂ )) 3.65-3.78 (2H, piperazine-H), 3.25-3.58 (m, 6H), 2.75 (t, J = 8Hz, 2H), 2.52 ( t, J = 8Hz, 2H) 1.71-1.85 (m, 4H)
MS: m / z 421
Example 41
IV-8 7- (4- (4- (3- (6-Fluoro-benzisoxazolyl))-1-piperidinyl) -n-butoxy) -2H-benzo [b] [1,4] oxazine- Preparation of 3 (4H) -one
7-hydroxy-2H-benzo [b] [1,4] oxazin-3 (4H) -one and 3- (1- (4-chlorobutyl) -4-piperidinyl) -6-fluoro-benzisoxazole as raw materials , IV-1 step 4 and reacting with 7- (4- (4- (3- (6-fluoro-benzisoxazolyl))-1-piperidinyl) -n-butoxy) -2H-benzo [b ] [1,4] Oxazin-3 (4H) -one is obtained. Yield 51%.

Elemental analysis: C ₂₃ H ₂₄ FN ₃ O ₄ (Theoretical value: C 64.93, H 5.69, N 9.88; Actual value: C 64.91, H 5.66, N 9.81)
¹ HNMR (DMSO-d ₆ ): δ10.03 (s, 1H, CONH), 8.16-6.77, (6H, aromatic ring-H), 4.11-4.16 (2H,
Piperazine-H), 3.81 (m, 5H, O-CH ₂ )) 3.65-3.78 (2H, piperazine-H), 3.25-3.58 (m, 6H), 2.75 (t, J = 8Hz, 2H), 2.52 ( t, J = 8Hz, 2H) 1.71-1.85 (m, 4H)
MS: m / z 425
Example 42
IV-9 Preparation of 7- (4- (4- (3- (6-Fluoro-benzisoxazolyl))-1-piperidinyl) -n-butoxy) -3-methyl-2 (1H) -quinolinone
Reaction in Step 4 of IV-1 using 7-hydroxy-3-methyl-2 (1H) -quinolinone and 3- (1- (4-chlorobutyl) -4-piperidinyl) -6-fluoro-benzisoxazole as raw materials 7- (4- (4- (3- (6-fluoro-benzisoxazolyl))-1-piperidinyl) -n-butoxy) -3-methyl-2 (1
H) -Quinolinone is obtained. Yield 73%.

Elemental analysis: C ₂₅ H ₂₆ FN ₃ O ₃ (Theoretical value: C 68.95, H 6.02, N 9.65; Actual value: C 68.99, H 6.04, N 9.67)
¹ HNMR (DMSO-d ₆ ): δ10.08 (s, 1H, CONH), 8.13-6.77, (6H, aromatic ring-H), 4.25-4.16 (2H,
Piperazine-H), 3.77 (m, 5H, O-CH ₂ )) 3.65-3.0 (2H, piperazine-H), 3.25-3.58 (m, 6H)
, 2.75 (t, J = 8Hz, 2H), 2.52 (t, J = 8Hz, 2H) 1.71-1.85 (m, 7H)
MS: m / z 435
Example 43
IV-10 Preparation of 7- (4- (4- (3- (6-Fluoro-benzisoxazolyl))-1-piperidinyl) -n-butoxy) -4-methyl-2 (1H) -quinolinone
Reaction in Step 4 of IV-1 using 7-hydroxy-4-methyl-2 (1H) -quinolinone and 3- (1- (4-chlorobutyl) -4-piperidinyl) -6-fluoro-benzisoxazole as raw materials 7- (4- (4- (3- (6-fluoro-benzisoxazolyl))-1-piperidinyl) -n-butoxy) -3-methyl-2 (1H) -quinolinone. Yield 73%.

Elemental analysis: C ₂₅ H ₂₆ FN ₃ O ₃ (theoretical value: C 68.95, H 6.02, N 9.65; actual value: C 68.90, H 6.01, N 9.60)
¹ HNMR (DMSO-d ₆ ): δ10.08 (s, 1H, CONH), 8.11-6.77, (6H, aromatic ring-H), 4.24-4.16 (2H,
Piperazine-H), 3.77 (m, 5H, O-CH ₂ )) 3.64-3.0 (2H, piperazine-H), 3.21-3.58 (m, 6H)
, 2.74 (t, J = 8Hz, 2H), 2.52 (t, J = 8Hz, 2H) 1.71-1.85 (m, 7H)
MS: m / z 435
Example 44
Tablet: Derivative of the present invention 25mg
Sucrose 155mg
Cornstarch 65mg
Magnesium stearate 5mg
Preparation method: Active ingredient, sucrose and corn starch are mixed, moistened with water, stirred uniformly, dried, crushed and sieved, added with magnesium stearate, mixed uniformly, and tableted. Each tablet weighs 250 mg and the active ingredient content is 25 mg.

Example 45
Injection: derivative of the present invention 10 mg
Water for injection 90mg
Preparation method: The active ingredient is dissolved in water for injection, mixed uniformly, filtered, and the resulting solution is dispensed into ampoules under aseptic conditions. Each ampoule is 10mg and the active ingredient content is 1mg / 1 ampoule.

Example 46
Dopamine D2 receptor binding test Experimental materials:
D ₂ receptor isotope binding ligand [ ³ H] Spiperone (77.0 Ci / mmol); (+) Butaclamol; GF / C glass fiber filter paper; fat soluble scintillation fluid; D2 receptor expressed from sf9 cells Body protein.

experimental method
100 mM NaCl, performs binding test film product ^[3 H] spiperone and CHO-hD _2L cells in 50 mM Tris-HCl buffer of 250μ1 of Ph = 7.4 containing 1 mM MgCl ₂ and 1% DMSO. Two samples containing the compound to be measured, 0.4 nM [ ³ H] spiperone and about 12 ug protein are incubated at room temperature for 120 minutes. Filter quickly through Whatman GF / B glass fiber filter pretreated with 0.3% polyethylenimine under reduced pressure to separate the bound radioligand and measure the radioactivity retained on the filter by liquid scintillation spectroscopy. The target compound of the following Example is measured by the above test, and first, the competitive inhibition rate at 10 mmol / L concentration of each compound for the binding of [ ³ H] Spiperone and D ₂ receptor is measured by rough screening; A series of additional receptor binding tests are performed on compounds higher than 95%, half the inhibitory concentrations (compounds required to inhibit 50% binding of IC ₅₀ , [ ³ H] Spiperone and D ₂ receptors) Determine (concentration). Both tubes are measured at each concentration and each compound is tested alone twice. As a result of the test, at 10 mM, all the compounds show an occupation ratio of 95% or more with respect to the D ₂ receptor, and the IC ₅₀ values exhibited by all the different compounds are less than 500 nM (see Table 1 below). The preferred IC ₅₀ value of a preferred embodiment of the compound of the present invention is 100 nM or less, more preferably 50 nM or less, still more preferably 25 nM or less, and most preferably 10 nM or less.

Example 47
D2 receptor antagonism test Experimental materials:
CHO cells that stably express rD ₂ R; Forskolin, IBMX, Dopamine, haloperidol were purchased from Sigma; the remaining reagents were purchased from China Pharmaceutical Group Shanghai Chemical Reagents.

two. experimental method:
CHO-rD ₂ cells are seeded in a 96-well plate at 30,000 cells / hole and cultured overnight; each drug is lysed in serum-free F12 medium containing 100 μM IBMX and preincubated at 37 ^° C for 30 minutes. Bait; add serum-free F ₁₂ medium containing 10 μM Forskolin and 10 μM Dopamine, react for 8 minutes, add 100 μl of pre-chilled 1M HClO ₄ to terminate the reaction, leave on ice for 40 minutes, 20 μl of 2M Neutralize the reaction by adding K ₂ CO ₃ , centrifuge at 3,000 rpm, 4 ^° C for 15 minutes, discard the KClO ₄ precipitate, remove a certain amount of supernatant, dilute to 0.05 M acetate buffer, and radiate The amount of cAMP produced is measured by an immunization method. [ ¹²⁵ I] cAMP
The radioimmune kit is purchased from the Shanghai China Pharmaceutical University Nuclear Medicine Experimental Center, and the specific instructions can be found in its instruction manual. Each compound is measured in both tubes at each concentration and each compound is tested alone at least twice. See Figs. 1-3 for test results.

  The ordinate of the dose-effect curve indicates the percentage decrease in cAMP production due to DA antagonism of the compound.

Example 48
^[3 H] Adenojin incorporation assay for intrinsic agonistic activity against D2
Wash twice with 200 μl of serum-free medium to remove the serum on the cells, add 90 μl of medium without serum to each well, and incubate the plate for 2-3 hours. As a positive control, 10 μl serum-containing culture medium, carrier (culture medium without serum), negative control (antagonist) or measurement compound dissolved in serum-free culture medium and standard (10 μl 10 μM solution at a final concentration of 1 μM) Is added to each hole and the plate is returned to the incubator. After 18 hours, 10 μl of serum-free medium containing [ ³ H] adedin (0.5 μCi / well) is added and the plate is returned to the incubator. After 4 hours, trypsin (0.25%) (100 μl / hole) is added. Return the plate to the incubator again. After 1 hour, the test is terminated by rapid filtration through Whatman GF / B glass fiber filters. For example, using a Brandel MLR-96T cell collector, wash the filter with 500 ml of 50 mM Tris-HCl buffer pH 7.0. For example, the radioactivity (50% effective amount) retained in the filter is measured by a Wallac 1205 Betaplate liquid scintillation counter. As the definition of intrinsic activity, the total uptake (1 μM quinpirole) is subtracted in the culture medium without serum, and the measured compound is compared with 1 μM quinpirole (DA full agonist) classified as 100% intrinsic activity. All tests are done on triplicate samples and the various drugs preferably occupy a complete row on each plate. The compounds of the present invention preferably exhibit at least 1% -90% intrinsic activity, more preferably exhibit at least 10% -90% activity, more preferably exhibit at least 10% -80% activity, and more preferably It showed at least 20% -60% intrinsic activity, more preferably 30% -50% intrinsic activity. See Figure 4 for test results.

Example 49
In vivo anti-schizophrenia activity test of Compound II-1 Test material
1. Reagent and solution formulation and dosage Apomorphine: Apomorphine is dissolved in 0.1% target ascorbic acid and a 10 mg / kg dose solution is formulated.

  Dissolve aripiprazole in physiological saline, formulate a 5 mg / kg dose solution and dissolve with ultrasound.

  Dissolve risperidone in saline and formulate a 0.25 mg / kg dose solution.

  Compound II-1, 20 mg / kg, formulated just before use.

2. Test animals and grouping
Female KM mice, 18-22g. During the experiment, mice are randomly divided into a solvent control group, a model control group, a positive control group, and each measurement reagent group. The action observation test was 5 mice in each group. Activity observation test was 4 mice in each group.

two. Test method
1. Drug administration to mice: Each measurement reagent is forcibly orally administered at 0.1 ml / 10 g to each group of mice.

2. Mouse modeling 30 minutes after administration of the measurement reagent, intraperitoneal injection is performed at a body weight of 0.1 ml / 10 g each using an apomorphine solution having a concentration of 10 mg / kg.

3. Test
3.1 stereotypical observation
After giving apomorphine to the mouse, raise the tail, sniff, bite, jump, climb the wall, raise the head, etc. within 30 seconds before 5, 10, 15, 20, 25, 30 minutes Observe and record whether or not the same behavior appears, and score according to the following criteria: Level 0, the above behavior does not appear within 30 seconds of observation; Level 1, discontinuous moderate within 30 seconds of observation Action appears; 2 levels, strong above action appears within 30 seconds of observation.

3.2 Observation of mouse activity
After giving the mouse apomorphine, immediately put it in a box where free activity is allowed, first adapt to the environment for 5 minutes, then 0-5, 5-10, 10-15, 15-20, 20-25 Record the number of mouse activities at 25-30 minutes.

4. Processing of test results
4.1 stereotypical observational test
Statistics of the total number of regular exercise points at 6 time points in each group of mice, and the average value of each mouse
The result is shown as mean ± SD.

4.2 Mouse activity frequency observation test
The total number of activities in each time zone of each group of mice is statistically calculated, the average value of each mouse is calculated, and the result is shown as mean ± SD.

5 Statistical methods The results of regular conduct tests are statistically calculated using the LSD method. Mouse activity counts are statistically analyzed by duplicate analysis of variance and Q-test.

3. Experimental Results Results of the regular motor activity observation test: See Figures 5 and 6
Compared to A negative control group mice, the apomorphine modeling group's stereotypic fraction is clearly increased, explaining that apomorphine can cause schizophrenia in mice.

  b Compared to the model group, risperidone, aripiprazole, compound II-1 clearly can reduce the number of stereotypic motor movements in mice, explaining that this compound has a certain antischizophrenic effect.

Example 50
II-1 acute toxicity studies:
When calculated by Bliss method, mice were forced to orally administer II-1 once, LD ₅₀ was greater than 2000 mg / kg, acute toxicity was much lower than risperidone (83.2 mg / kg), aripiprazole (1400 mg / kg) and ziprasidone (1600mg / kg).

Example 51
Bacterial reverse mutation test of II-1 Species: Typhi salmonella histidine nutrient-deficient mutants TA ₉₇ , TA ₉₈ , TA ₁₀₀ and TA ₁₀₂ .
Results: The experiment comprises two parts, -S ₉ and + S _9, shows the antibacterial effect on the 5000 mg / dish against TA ₉₇ in the test system has TA ₉₈ and S ₉ in the test system without S _9. Other doses have no antibacterial activity against all strains and have a good growth background. All test dose did not result in a significant increase in the return number of bacterial colonies in experimental system also S ₉ there in experimental systems without S _9, Ames test is negative.

Claims (6)

Aralkyl piperidine (or piperazine) derivatives which are compounds represented by the following general structural formula (1) ′ or formula (1) ″ , or their free bases or pharmaceutically acceptable salts:
In formula (1) 'and formula (1)'' ,
Z is CH or N,
Y is O or S ;
n is 3 or 4 ,
R _5, R ₆ is hydrogen, an alkyl group of C1-C4, hydroxy group, an alkoxy group of C ₁ -C4, shows a kind of Ha androgenic, or cyano group, an alkyl group of the C ₁ -C _4, alkyl moiety in the alkoxy group of C ₁ -C ₄ is optionally substituted with 1-3 fluoro atoms.   2. The aralkyl piperidine (or piperazine) derivative according to claim 1, wherein the salt is a salt containing a pharmaceutically acceptable anion.   2. The aralkyl piperidine (or piperazine) derivative according to claim 1, wherein the salt is hydrochloride, hydrobromide, sulfate, trifluoroacetate or methanesulfonate. I-1 7- [4- (4- (3- (6-chloro-benzisoxazolyl))-1-piperazinyl) -n-butoxy] -3,4-dihydro-2 (1H) -quinolinone,
I-2 7- [4- (4- (3- (5-chloro-benzisoxazolyl))-1-piperazinyl) -n-butoxy] -3,4-dihydro-2 (1H) -quinolinone,
I-3 7- [4- (4- (3- (benzisoxazolyl))-1-piperazinyl) -n-butoxy] -3,4-dihydro-2 (1H) -quinolinone,
I-4 7- [4- (4- (3- (6-Fluoro-benzisoxazolyl))-1-piperazinyl) -n-butoxy] -3,4-dihydro-2 (1H) -quinolinone,
I-5 7- [4- (4- (3- (6-Trifluoromethyl-benzisoxazolyl))-1-piperazinyl) -n-butoxy] -3,4-dihydro-2 (1H)- Quinolinone,
I-6 7- [4- (4- (3- (6-Methyl-benzisoxazolyl))-1-piperazinyl) -n-butoxy] -3,4-dihydro-2 (1H) -quinolinone,
I-7 7- [4- (4- (3- (5-methyl-benzisoxazolyl))-1-piperazinyl) -n-butoxy] -3,4-dihydro-2 (1H) -quinolinone,
I-8 7- [4- (4- (3- (6-hydroxy-benzisoxazolyl))-1-piperazinyl) -n-butoxy] -3,4-dihydro-2 (1H) -quinolinone,
I-9 7- [4- (4- (3- (5-methoxy-benzisoxazolyl))-1-piperazinyl) -n-butoxy] -3,4-dihydro-2 (1H) -quinolinone,
I-10 7- [4- (4- (3- (5-cyano-benzisoxazolyl))-1-piperazinyl) -n-butoxy] -3,4-dihydro-2 (1H) -quinolinone,
I-11 7- [4- (4- (3- (5-bromo-benzisoxazolyl))-1-piperazinyl) -n-butoxy] -3,4-dihydro-2 (1H) -quinolinone,
I-12 7- [4- (4- (3- (7-Bromo-6-methoxy-benzisoxazolyl))-1-piperazinyl) -n-butoxy] -3,4-dihydro-2 (1H ) -Quinolinone,
II-1 7- [4- (4- (3- (6-Fluoro-benzisoxazolyl))-1-piperidinyl) -n-butoxy] -3,4-dihydro-2 (1H) -quinolinone,
II-2 7- [3- (4- (3- (6-Fluoro-benzisoxazolyl))-1-piperidinyl) -n-propoxy] -3,4-dihydro-2 (1H) -quinolinone,
II-3 7- [2- (4- (3- (6-Fluoro-benzisoxazolyl))-1-piperidinyl) -ethoxy] -3,4-dihydro-2 (1H) -quinolinone,
II-4 7- [2- (4- (3-Benzisoxazolyl) -1-piperidinyl) -ethoxy] -3,4-dihydro-2 (1H) -quinolinone,
II-5 7- [4- (4- (3- (6-chloro-benzisoxazolyl))-1-piperidinyl) -n-butoxy] -3,4-dihydro-2 (1H) -quinolinone,
II-6 7- [4- (4- (3- (5-methoxy-benzisoxazolyl))-1-piperidinyl) -n-butoxy] -3,4-dihydro-2 (1H) -quinolinone,
II-7 7- [4- (4- (3- (5-fluoro-benzisoxazolyl))-1-piperidinyl) -n-butoxy] -3,4-dihydro-2 (1H) -quinolinone,
II-8 7- [4- (4- (3- (5,6-Dimethoxy-benzisoxazolyl))-1-piperidinyl) -n-butoxy] -3,4-dihydro-2 (1H)- Quinolinone,
II-9 7- [4- (4- (3- (5-hydroxy-benzisoxazolyl))-1-piperidinyl) -n-butoxy] -3,4-dihydro-2 (1H) -quinolinone,
II-10 7- [4- (4- (3- (5,6-dihydroxy-benzisoxazolyl))-1-piperidinyl) -n-butoxy] -3,4-dihydro-2 (1H)- Quinolinone,
II-11 E-7- [4- (4- (3- (6-Fluoro-benzisoxazolyl))-1-piperidinyl) -2-butenyloxy] -3,4-dihydro-2 (1H)- Quinolinone,
II-12 Z-7- [4- (4- (3- (6-Fluoro-benzisoxazolyl))-1-piperidinyl) -2-butenyloxy] -3,4-dihydro-2 (1H)- Quinolinone,
II-13 7-(((1R, 2S) -2- (4- (3- (6-Fluoro-benzisoxazolyl))-1-piperidinyl) methyl) cyclohexyl) methoxy) -3,4-dihydro -2 (1H) -quinolinone,
II-14 7-(((1R, 2R) -2- (4- (3- (6-Fluoro-benzisoxazolyl))-1-piperidinyl) methyl) cyclohexyl) methoxy) -3,4-dihydro -2 (1H) -quinolinone,
III-1 7- [4- (4- (3- (1,2-benzisothiazolyl))-1-piperazinyl) -n-butoxy] -3,4-dihydro-2 (1H) -quinolinone,
III-2 7- [3- (4- (3- (1,2-benzisothiazolyl))-1-piperazinyl) -n-propoxy] -3,4-dihydro-2 (1H) -quinolinone,
III-3 7- [2- (4- (3- (1,2-benzisothiazolyl))-1-piperazinyl) -ethoxy] -3,4-dihydro-2 (1H) -quinolinone,
III-4 7- [4- (4- (3- (6-Methoxy-1,2-benzisothiazolyl))-1-piperazinyl) -n-butoxy] -3,4-dihydro-2 (1H) -Quinolinone,
III-5 7- [4- (4- (3- (7-methoxy-1,2-benzisothiazolyl))-1-piperazinyl) -n-butoxy] -3,4-dihydro-2 (1H) -Quinolinone,
III-6 7- [4- (4- (3- (5-methoxy-1,2-benzisothiazolyl))-1-piperazinyl) -n-butoxy] -3,4-dihydro-2 (1H) -Quinolinone,
III-7 7- [4- (4- (3- (4-Methoxy-1,2-benzisothiazolyl))-1-piperazinyl) -n-butoxy] -3,4-dihydro-2 (1H) -Quinolinone ,
IV- 7-7- (4- (4- (3- (6-fluoro-benzisoxazolyl))-1-piperidinyl) -n-butoxy) -2 (1H) -quinolinone,
IV-8 7- (4- (4- (3- (6-Fluoro-benzisoxazolyl))-1-piperidinyl) -n-butoxy) -2H-benzo [b] [1,4] oxazine- 3 (4H) -on,
IV-9 7- (4- (4- (3- (6-Fluoro-benzisoxazolyl))-1-piperidinyl) -n-butoxy) -3-methyl-2 (1H) -quinolinone and
IV-10 7- (4- (4- (3- (6-Fluoro-benzisoxazolyl))-1-piperidinyl) -n-butoxy) -4-methyl-2 (1H) -quinolinone from a compound or a free base or drug acceptable salt selected a Lal kill piperidine or piperazine derivatives. A composition for the treatment of schizophrenia comprising a therapeutically effective amount of a compound according to any one of claims 1 to 4 or a free base or pharmaceutically acceptable salt thereof and a medically acceptable carrier. object. Use of the compound according to any one of claims 1 to 4 or a free base or a pharmaceutically acceptable salt thereof for the preparation of a drug for treating schizophrenia.