WO2006104088A1 - 1-(3-(2-(1-ベンゾチオフェン-5-イル)エトキシ)プロピル)アゼチジン-3-オールまたはその塩の製造法 - Google Patents
1-(3-(2-(1-ベンゾチオフェン-5-イル)エトキシ)プロピル)アゼチジン-3-オールまたはその塩の製造法 Download PDFInfo
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- WO2006104088A1 WO2006104088A1 PCT/JP2006/306127 JP2006306127W WO2006104088A1 WO 2006104088 A1 WO2006104088 A1 WO 2006104088A1 JP 2006306127 W JP2006306127 W JP 2006306127W WO 2006104088 A1 WO2006104088 A1 WO 2006104088A1
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D333/00—Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom
- C07D333/50—Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom condensed with carbocyclic rings or ring systems
- C07D333/52—Benzo[b]thiophenes; Hydrogenated benzo[b]thiophenes
- C07D333/54—Benzo[b]thiophenes; Hydrogenated benzo[b]thiophenes with only hydrogen atoms, hydrocarbon or substituted hydrocarbon radicals, directly attached to carbon atoms of the hetero ring
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P25/00—Drugs for disorders of the nervous system
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P25/00—Drugs for disorders of the nervous system
- A61P25/02—Drugs for disorders of the nervous system for peripheral neuropathies
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D333/00—Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom
- C07D333/50—Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom condensed with carbocyclic rings or ring systems
- C07D333/52—Benzo[b]thiophenes; Hydrogenated benzo[b]thiophenes
- C07D333/62—Benzo[b]thiophenes; Hydrogenated benzo[b]thiophenes with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to carbon atoms of the hetero ring
- C07D333/64—Oxygen atoms
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D409/00—Heterocyclic compounds containing two or more hetero rings, at least one ring having sulfur atoms as the only ring hetero atoms
- C07D409/02—Heterocyclic compounds containing two or more hetero rings, at least one ring having sulfur atoms as the only ring hetero atoms containing two hetero rings
- C07D409/12—Heterocyclic compounds containing two or more hetero rings, at least one ring having sulfur atoms as the only ring hetero atoms containing two hetero rings linked by a chain containing hetero atoms as chain links
Definitions
- the present invention relates to a novel process for producing 1- (3- (2- (1-benzothiophene 5-yl) ethoxy) propyl) azetidine 3-ol or a salt thereof useful as a therapeutic agent for diseases of central and peripheral nerves.
- 1- 3- (2- (1-benzothiophene 5-yl) ethoxy) propyl
- azetidine 3-ol or a salt thereof useful as a therapeutic agent for diseases of central and peripheral nerves.
- the method (1) lacks such as (A) low yield, (B) complicated purification operations such as silica gel column chromatography, (C) a lot of waste is discharged. Has a point.
- the method (2) uses reagents such as (B) borane-tetrahydrofuran complex and boron trifluoride tetrahydride-furan complex that are harmful to the human body, have high flammability and toxicity, and have problems with stability. (B) Because of the disadvantages such as the need for handling and storage and the need for special equipment, it is not satisfactory as an industrial production method.
- the production method of 2- (1 benzothiophene 5-yl) ethanol used in (3) and (4) above includes, for example, (5) bromination of 5-methyl-1 benzothiophene with N bromosuccinimide, and cyanide (1) benzothiophen-5-yl) acetonitrile, followed by hydrolysis and then reduction (Non-patent Documents 1, 2, 3), (6) 5 Bromo 1 acts on benzothiophene with magnesium To make a Grignard reagent, followed by reaction with ethylene oxide (Patent Document 2), (7) 5- (1 benzothiophene) carbaldehyde is converted into methoxymethylene ylide and Wittig reaction. Then, hydrolysis (1 benzothiophene-5yl) acetaldehyde, followed by reduction (Patent Document 3) is known.
- methods (8) and (9) use (A) intermediates are irritating, (B) use highly toxic reagents (cyanide compounds), and (C) complex waste disposal (D) a large number of steps, (E) a low yield, (F) a high reaction temperature, (G) a complicated reaction operation, and the like. It is not satisfactory as a production method.
- the intermediate (A) is an oily substance
- a complicated operation such as distillation or silica gel column chromatography is required to isolate them.
- a complicated by-product is generated, which is complicated.
- C) The 5-halogeno-1-benzothiophene derivative has a low melting point. Separation of product force requires complicated operations such as distillation or silica gel column chromatography, and
- the 4-halogenothiophenol used in the above (10) is, for example, (11) a method of demethylating by reacting a large excess of chlorine after halogenating thioazole with chlorine or bromine ( Patent Document 6), (12) Method of reacting (4-halogenophenylthio) acetic acid with sodium sulfide in the presence of sodium hydroxide (Patent Document 7), (13) Monohalogenobenzene in the presence of salt and zinc , Reacting with monosalt-sulfur to obtain dino-mouth genodiphenyl polysulfide, and then reducing with zinc hydrochloride (Patent Document 8), (14) 1,4 dihalogenobenzene in 1-methyl-2-pyrrolidone In addition, a method of reacting with sodium hydrogen sulfate (Patent Document 9) is known.
- Patent Document 1 International Publication No. 03Z035647 Pamphlet
- Patent Document 2 EP0129478
- Patent Document 3 Pamphlet of International Publication No.99Z31056
- Patent Document 4 Pamphlet of International Publication No. 02Z100850
- Patent Document 5 Pamphlet of International Publication No. 2005Z012291
- Patent Document 6 Japanese Patent Laid-Open No. 08-143533
- Patent Document 7 Japanese Patent Laid-Open No. 05-178816
- Patent Document 8 Japanese Patent Laid-Open No. 05-140086
- Patent Document 9 Japanese Patent Laid-Open No. 04-182463
- Patent Document 10 Pamphlet of International Publication No. 98Z43967
- Non-Patent Document 1 Journal 'Ob' Medicinal 'Chemistry (J. Med. Chem.), 1991, 34th, p. 65-73
- Non-Patent Document 2 Journal 'Ob' Medicinal 'Chemistry (J. Med. Chem.), 1997, 40th, p. 1049-1062
- Non-Patent Document 3 Nihon Kagaku-Journal, 1967, No. 88, p. 445 -447
- Non-Patent Document 4 Journal 'Ob' 'Heterocyclic' Chemistry (J. Heterocyclic Chem.), 1965, II, p. 44-48
- Non-Patent Document 5 Journal 'Ob' Medicinal 'Chemistry (J. Med. Chem.), 2003, 46th, p. 2446-2455
- R 1 represents a hydrogen atom or an optionally substituted alkyl, cycloalkyl or aryl group, and is reacted with an alcohol represented by the general formula [2]
- a propionic acid ester derivative represented by “wherein R 1 has the same meaning as described above”, and then subjected to a hydrolysis reaction in the presence of a base, is characterized in that 3- (2— (1 Benzothiophene 5-yl) ethoxy) propionic acid or a salt thereof; general formula [2] [chemical formula 3]
- An important intermediate in the reaction; 3- (2- (1 benzothiophene 5-yl) ethoxy) propionic acid or a salt thereof is derivatized into a reactive derivative and then reacted with 3-azetidinol or a salt thereof in the presence of a base.
- R 1 has the same meaning as described above, and is reacted with an alcohol represented by the general formula [2]
- a process for producing (2- (1 benzothiophene-5 yl) ethoxy) propyl) azetidin 3-ol or a salt thereof has been found.
- a dihydrobenzothiophene derivative represented by “wherein X 1 has the same meaning as described above” and subjected to a dehydration reaction in the presence of an acid catalyst, is represented by the general formula [6]
- the benzothiophene derivative represented by “X 1 has the same meaning as described above” in the presence of a base and a palladium catalyst.
- R 2 and R 3 are the same or different and may be substituted alkyloxycarbonyl, cycloalkyloxycarbonyl or aralkyloxycarbonyl. Or a cyan group.
- a benzothiophene derivative represented by the formula “R 2 and R 3 have the same meaning as described above” or a salt thereof is reacted with an acid or a base, and subjected to a decarboxylation reaction as necessary.
- R 4 represents a hydrogen atom or an optionally substituted alkyl, cycloalkyl, or aralkyl group.
- R 2 and R 3 have the same meaning as described above, and the benzothiophene derivative represented by the general formula [10]
- R 4 has the same meaning as described above], and is an important intermediate for the production of a benzothiopheneacetic acid derivative or a salt thereof represented by the general formula [11]
- X 1 has the same meaning as described above, and a (phenolthio) acetic acid derivative or a salt thereof is reacted with a halogenating agent to give a general formula [4]
- X 1 has the same meaning as described above.
- the conductor is then subjected to a dehydration reaction in the presence of an acid catalyst to obtain a general formula [6]
- X 1 has the same meaning as described above. 5
- a halogeno 1 monobenzothiophene derivative represented by the following formula then, in the presence of a base and a palladium catalyst, the general formula [8] [Chemical Formula 26]
- R 2 and R ° have the same meaning as described above, and a coupling reaction with a malonic acid derivative or a salt thereof represented by the general formula [12]
- R 2 and R 3 have the same meaning as described above. Then, the benzothiophene derivative or a salt thereof represented by the following formula is used, and then reacted with an acid or a base, and subjected to a decarboxylation reaction as necessary. And the general formula [11]
- R 4 has the same meaning as described above.
- a benzothiophene acetic acid derivative represented by the above or a salt thereof and then subjected to a hydrolysis reaction as necessary, followed by presence of alkali metal borohydride.
- the inventors have found a method for producing 2- (1 benzothiophene 5-yl) ethanol, which is characterized by being subjected to a reduction reaction in which an activator is added.
- X 1 has the same meaning as described above, and a (phenolthio) acetic acid derivative or a salt thereof is reacted with a halogenating agent to give a general formula [4]
- X 1 has the same meaning as described above.
- R 2 and R ° have the same meaning as described above.
- R 4 has the same meaning as described above.
- a benzothiophene acetic acid derivative represented by the above or a salt thereof and then subjected to a hydrolysis reaction as necessary, followed by presence of alkali metal borohydride. Then, it is subjected to a reduction reaction in which an activator is added to give 2- (1 benzothiophene-5-yl) ethanol, and then subjected to a carlo reaction with acrylonitrile and Michael in the presence of a base, and then the presence of an acid.
- R 1 has the same meaning as described above, and is reacted with an alcohol represented by the general formula [2]
- the process for producing 1- (3- (2- (1-benzothiophene-1-yl) ethoxy) propyl) 3-azetidinol or a salt thereof according to the present invention includes (1) high yield, (2) silica gel It does not require column chromatography, (3) therefore has low waste, (4) does not use harmful and stable reagents, and is an industrial production method. It is useful as
- the method for producing 3- (2- (1 benzothiophene-5yl) ethoxy) propionic acid or a salt thereof according to the present invention is (1) less by-products, (2) flammable gas is generated. It is useful as an industrial production method.
- the method for producing a benzothiophene acetic acid derivative represented by the general formula [10] of the present invention or a salt thereof includes (1) a method that does not involve an irritating intermediate, (2) a highly toxic reagent (Cyan ⁇ ⁇ ⁇ (3) No complicated waste treatment required (4) Fewer steps, (5) High yield, (6) High temperature reaction not used, (7) Reaction operation Is useful as an industrial production method.
- the method for producing a 5-halogeno 1 benzothiophene derivative represented by the general formula [6] of the present invention can be purified by simple operations such as (1) few by-products and (2) extraction and crystallization. (3) Therefore, it does not require complicated purification operations such as distillation or silica gel column chromatography, and is useful as an industrial production method.
- a halogen atom means a fluorine atom, a chlorine atom, a bromine atom and an iodine atom
- an alkyl group means, for example, methyl, ethyl, propylene.
- a linear or branched C_alkyl group such as alkyl, isopropyl, butyl, sec butyl, isobutyl, tert butyl, pentyl, isopentyl, hexyl, heptyl and octyl; Cyclopropyl, cyclobutyl, cycl
- an alk alkyl group such as benzyl, diphenylmethyl, trityl, phenethyl and naphthylmethyl
- an alkoxy group refers to, for example, methoxy, ethoxy
- Linear or branched C alkyls such as ropoxy, isopropoxy, butoxy, isobutoxy, sec butoxy, tert butoxy, pentyloxy and isopentyloxy
- Roxy group for example, methoxycarbol, ethoxycarbonyl, 1,1-dimethylpropoxycarbonyl, isopropoxycarbonyl, 2-ethylhexyloxycarbonyl, tert butoxy Linear or branched C alkyloxycarbox, such as carbonyl and tert-pentyloxycarboxyl
- a cycloalkyl group such as, for example, cyclopropoxycarbonyl, cyclobutoxycarbonyl, cyclopentyloxycarbonyl, and cyclohexoxycarbonyl.
- a carboxy group includes, for example, an alkoxy carbonyl group such as benzyloxy carbonyl and phenethyl oxycarbonyl group;
- an alkenyl group means, for example, a C alkenyl group such as vinyl, propenyl, butenyl, pentenyl, hexenyl, heptenyl and otaenyl.
- R 1 alkyl, cycloalkyl and aryl groups are substituted with one or more selected groups such as a halogen atom, hydroxyl group, nitro group, alkyl group, cycloalkyl group, alkoxy group, alkenyl group and aryl group. You can be! /
- alkyloxycarbonyl, cycloalkyloxycarbonyl and alkyloxycarbonyl groups of R 2 and R 3 are halogen atoms, hydroxyl groups, nitro groups, alkyl groups, cycloalkyl groups, alkoxy groups, alkoxyl groups. Forces such as groups and aryl groups are selected and replaced with one or more groups!
- the alkyl, cycloalkyl and aralkyl groups of R 4 are a halogen atom, hydroxy It may be substituted with one or more selected groups such as a ru group, a nitro group, an alkyl group, a cycloalkyl group, an alkoxy group, a alkaryl group and an aryl group.
- R 1 has the same meaning as described above, and is reacted with an alcohol represented by the general formula [2]
- R 1 is a propionic acid ester derivative represented by “wherein R 1 has the same meaning as described above” and undergoes a hydrolysis reaction in the presence of a base
- R 1 is a hydrogen atom or an alkyl group.
- a production method in which a production method is preferably a hydrogen atom, a methyl group, an ethyl group or a propyl group is more preferred, and a production method in which a production method is a hydrogen atom or an ethyl group is more preferred.
- a production method in which the production method in which the acid used is an inorganic acid is preferred is sulfuric acid or hydrogen chloride is more preferred.
- the acid is hydrogen chloride
- a production method in which R 1 is a hydrogen atom is preferred.
- the acid is sulfuric acid
- a production method in which R 1 is an ethyl group is preferred.
- the 3-ol is subjected to a reduction reaction in which an activator is added in the presence of an alkali metal borohydride to give 1- (3- (2- (1-benzothiophene-5-yl) ethoxy) propyl) azetidine 3-ol
- an activator is added in the presence of an alkali metal borohydride to give 1- (3- (2- (1-benzothiophene-5-yl) ethoxy) propyl) azetidine 3-ol
- a production method in which the alkali metal borohydride used is sodium borohydride is preferred.
- a production method that is shigu sulfuric acid is more preferred.
- the amount of sulfuric acid used is 0.5 to 0.6 times mol of alkali metal borohydride, and sulfuric acid is added at 0 to 30 ° C over 10 minutes to 6 hours. 30 A production method that reacts at 70 ° C is preferred.
- X 1 has the same meaning as described above, and a (phenolthio) acetic acid derivative or a salt thereof is reacted with a halogenating agent to give a general formula [4]
- X 1 and X 2 have the same meaning as described above, and then subjected to an intramolecular ring-closing reaction in the presence of a Lewis acid, followed by a reduction reaction.
- a production method in which X 1 is a bromine atom a production method in which a production method in which a production method in which chlorine atom, bromine atom or iodine atom is preferred is a bromine atom or an iodine atom is more preferred is more preferred.
- X 1 is a chlorine atom or a bromine source.
- a production method in which a production method that is a bromine atom or an iodine atom is preferred, and a production method in which a production method that is a bromine atom is more preferred is a bromine atom.
- [0025] According to a method for crystallizing and isolating a crystal of a dihydrobenzothiophene derivative represented by the general formula [5], crystallization of aliphatic hydrocarbons such as hexane and cyclohexane is performed.
- the method is preferable, and the method of crystallizing from hexane or cyclohexane is more preferable, and the method of crystallizing from cyclohexane is more preferable.
- R represents an optionally substituted alkyloxycarbol, cycloalkyloxycarbol or aralkyloxycarboxyl group;
- R 2 has the same meaning as described above .
- R 2 is an alkyloxycarbonyl group, an aralkyloxycarboxyl group or a cyano group; and
- R 3a is preferably a method of coupling with a malonic acid derivative represented by R 2 is more preferably a C alkyloxycarbol group, an alkyloxycarbon group or an alkylalkylcarbol group.
- Manufacturing method that is a bonyl group or an alk alkyl carboxy group is more preferable.
- X 1 is a chlorine atom, bromine atom or iodine atom is more preferred, but the production method in which X 1 is a bromine atom or iodine atom is more preferred!
- Production power when X 1 is bonded to the 4-position or 5-position of the benzothiophene ring Preferred manufacturing power is more preferable for bonding to the 5-position of the benzothiophene ring.
- R 2 is an alkyloxycarbonyl group, an aralkyloxycarboxyl group, or a cyan group;
- R 3a force An alkyloxycarbol group or an aralkyloxycarboxyl group
- Preferred R 2 is a C alkyloxycarbonyl group, C
- R 3a is C alkyloxycarbonyl
- More preferred is a production process in which the group is an alkyl or alkoxycarbonyl group.
- R 2 and R 3a have the same meanings as described above.”
- Preferred 5 position of benzothiophene ring More preferred is a production method that binds to.
- R 4 has the same meaning as described above
- a production method in which the 4- or 5-position of the benzothiophene ring is bonded is further preferred. I like it.
- R 4 is a hydrogen atom or an optionally substituted alkyl, cycloalkyl, or aralkyl group is preferred.
- preferred compounds include the following compounds.
- a compound in which R 1 is a hydrogen atom or an alkyl group is preferably a hydrogen atom, a methyl group, an ethyl group, or a propyl group, and a compound in which a more preferable hydrogen atom or ethyl group is more preferable.
- preferable compounds include the following compounds.
- a compound in which X 1 is a chlorine atom, a bromine atom or an iodine atom is preferred, and a compound in which a compound in which X 1 is a bromine atom or an iodine atom is more preferred is a bromine atom.
- R 2 is an alkyloxycarbol, a cycloalkyloxycarboro, an alkyloxycarboro group or a cyano group
- an alkyloxycarboro group, an aralkyloxycarboro group is preferred.
- a compound having a cyano group is more preferable, and a C alkyloxycarbol group or an al C alkyloxycarboro group is preferred. More preferred are compounds which are groups or cyan groups.
- R 3 is an alkyloxycarbonyl, cycloalkyloxycarbonyl, or alkyloxycarbonyl group is preferable, and a compound in which R3 is an alkyloxycarbo ol group or an aralkyloxycarbo col group is preferable.
- C alkyl better than force
- a compound that is a 1-4 carboxy group or an aralkyl carboxy group is
- the compound represented by “wherein R 2 and R 3 have the same meaning as described above” is bonded to the 4-position or 5-position of the benzothiophene ring, preferably to the 5-position. More preferred are the compounds described above.
- Representative compounds of the general formula [9] of the present invention or salts thereof include, for example, the following compounds.
- Et represents an ethyl group
- ⁇ represents a tert-butyl group.
- the compound of the general formula [5] is subjected to an intramolecular ring-closing reaction in the presence of a Lewis acid and then subjected to a reduction reaction. Can be manufactured.
- the compound of general formula [5] can be easily derived into the compound of general formula [6] by subjecting it to a dehydration reaction in the presence of an acid catalyst.
- the compound of the general formula [3] or a salt thereof can be obtained, for example, by reacting thiophenol with chloroacetic acid in the presence of a base to give (vinylthio) acetic acid, followed by halogenation, or 4-halogenothioff It can be easily obtained in a good yield by a method of reacting ⁇ nol with black mouth acetic acid in the presence of a base.
- the salt of the compound of the general formula [3] is not particularly limited as long as it is a generally known salt in an acidic group such as a carboxyl group.
- the salt with an alkali metal such as sodium, potassium and cesium is used.
- salts with nitrogen-containing organic bases such as jetylamine and dicyclohexylamine.
- a compound of the general formula [3] or a salt thereof is reacted with a halogenating agent to give an acid halide, and then subjected to an intramolecular cyclization reaction in the presence of a Lewis acid to give a compound of the general formula [13] Can be manufactured.
- This reaction is usually carried out in the presence of a solvent, and the solvent used is not particularly limited as long as it does not affect the reaction.
- a solvent for example, methylene chloride, chloroform, dichloroethane, etc. Aliphatic halogenated hydrocarbons of the above; -tro compounds such as nitromethane and -trobenzene; and carbon dioxide and the like. These solvents may be used as a mixture.
- Preferable solvents include aliphatic halogenated hydrocarbons, and methylene chloride is more preferable.
- the amount of the solvent to be used is not particularly limited, but preferably 1 to 50 times (v / w), more preferably 3 to 15 times (v / w) the compound of the general formula [3] or a salt thereof. w).
- halogenating agent used in this reaction examples include phosphorus oxychloride, phosphorus oxyphosphorus, phosphorus trichloride, phosphorus pentachloride, chloride, bromide and chloride. ⁇ ⁇ oxalyl and the like, and salt is preferred.
- the amount of rosinizing agent used depends on the type of halogenating agent. In the case of onyl, the amount is 0.5 times mol or more, preferably 1 to 2 times mol for the compound of the general formula [3] or a salt thereof.
- Examples of the Lewis acid used in this reaction include aluminum chloride, aluminum bromide, boron trifluoride, titanium tetrachloride, iron chloride, tin chloride, mercury chloride, and sulfuric acid. Salt aluminum is preferred.
- the Lewis acid is used in an amount of 1 mol or more, preferably 1 to 5 mol per mol of the compound of the general formula [3] or a salt thereof.
- the reaction temperature is not particularly limited, but is 20 ° C to the boiling point of the solvent, preferably 0 to 70 ° C.
- the reaction time is not particularly limited, but is 10 minutes to 50 hours, preferably 30 minutes to 20 hours.
- the compound of the general formula [5] can be produced by subjecting the compound of the general formula [13] to a reduction reaction.
- This reaction is usually carried out in the presence of a solvent, and the solvent used is not particularly limited as long as it does not affect the reaction.
- aliphatic solvents such as methylene chloride, chloroform and dichloroethane are used.
- Halogenated hydrocarbons such as methylene chloride, chloroform and dichloroethane are used.
- Halogenated hydrocarbons such as tetrahydrofuran, 1,2-dimethoxyethane, bis (2-methoxyethyl) ether and dioxane; ⁇ , ⁇ dimethylformamide, ⁇ , ⁇ dimethylacetamide and 1 methyl 2—
- Amides such as pyrrolidone; Sulfoxides such as dimethyl sulfoxide; Alcohols such as methanol, ethanol, propanol, 2-propanol and butanol; -Tolyls such as acetonitrile; Esters such as methyl acetate and ethyl acetate; Nitro
- Preferable solvents include a mixed solvent of aliphatic halogenated hydrocarbons and alcohols, and a mixed solvent of methylene chloride and methanol is more preferable.
- the amount of the solvent used is not particularly limited, but is preferably a compound of the general formula [13] 1 to 50 times the amount (v / w), more preferably 3 to 15 times the amount (v / w).
- Examples of the reducing agent used in this reaction include alkali metals such as lithium, sodium and potassium; alkaline earth metals such as magnesium and calcium; zinc, aluminum, chromium, titanium, iron, samarium, selenium and hydro Metals such as sulfite sodium and their metal salts; metal hydrides such as diisobutylaluminum hydride, trialkylaluminum hydride, tin hydride compounds and hydrosilanes; sodium borohydride, lithium borohydride and Borohydride complex compounds such as potassium borohydride; aluminum hydride complex compounds such as lithium aluminum hydride; and borane and alkylborane.
- Preferred reducing agents include borohydride complex compounds, with sodium borohydride being more preferred.
- the amount of the reducing agent used varies depending on the type of the reducing agent.
- the amount of the reducing agent is preferably 0.25 times mol or more with respect to the compound of the general formula [13]. 0.25 to 2 moles.
- the reaction temperature is not particularly limited, but is 20 ° C to the boiling point of the solvent, preferably 0 to 70 ° C.
- the reaction time is not particularly limited, but is 10 minutes to 50 hours, preferably 30 minutes to 20 hours.
- the compound of the general formula [5] thus obtained may be used as it is in the next reaction without isolation, but it is preferable to isolate it by crystallizing it.
- Crystallization is preferably a method of crystallization of aliphatic hydrocarbons such as hexane and cyclohexane, more preferably a method of crystallization from hexane or cyclohexane, and a method of crystallization from cyclohexane. Is more preferable.
- the compound of the general formula [6] can be produced by subjecting the compound of the general formula [5] to a dehydration reaction in the presence of an acid catalyst.
- This reaction is usually carried out in the presence of a solvent, and the solvent used is not particularly limited as long as it does not affect the reaction, and examples thereof include hexane and cyclohexane.
- Aliphatic hydrocarbons aromatics such as benzene, toluene and xylene Hydrocarbons; Aliphatic halogenated hydrocarbons such as methylene chloride, chloroform, and dichloroethane; Ethers such as tetrahydrofuran, 1,2-dimethoxyethane, bis (2-methoxyethyl) ether and dioxane; Amides such as formamide, ⁇ , ⁇ -dimethylacetamide and 1-methyl 2-pyrrolidone; sulfoxides such as dimethyl sulfoxide; esters such as methyl acetate and ethyl acetate; ketones such as acetonitrile and 2-butanone; Examples include alcohols such as methanol, ethanol, propanol,
- Preferred solvents include ketones, and acetone is more preferred.
- the amount of solvent used is not particularly limited, but is preferably 1 to 50 times (v / w), more preferably 1 to 10 times (v / w) the amount of the compound of general formula [5] .
- Examples of the acid catalyst used in this reaction include hydrochloric acid, sulfuric acid, methanesulfonic acid, trifluoromethanesulfonic acid, p-prested acids such as toluenesulfonic acid and dichloroacetic acid; and aluminum chloride, trifluoride, and the like.
- Lewis acids such as boron fluoride and boron trichloride are mentioned, and p-toluenesulfonic acid is preferred.
- the amount of the acid catalyst to be used is 0.0001 times mol or more, preferably 0.001 to 1 times mol for the compound of the general formula [5].
- the reaction temperature is not particularly limited, but is 20 ° C to the boiling point of the solvent, preferably 0 to 70 ° C.
- the reaction time is not particularly limited, but is 10 minutes to 50 hours, preferably 30 minutes to 20 hours.
- the compound of the general formula [9] or a salt thereof is represented by the general formula [7] in the presence of a base and a palladium catalyst, in the presence or absence of a ligand, in the presence or absence of a reducing agent.
- the compound can be produced by subjecting it to a coupling reaction with a compound of the general formula [8] or a salt thereof.
- This reaction is usually carried out in the presence of a solvent, and the solvent used is not particularly limited as long as it does not adversely influence the reaction.
- aliphatics such as hexane and cyclohexane are used.
- Hydrocarbons Halogenated hydrocarbons such as methylene chloride, chloroform, and dichloroethane; Ethers such as tetrahydrofuran, 1,2-dimethoxyethane, bis (2-methoxyethyl) ether and dioxane; benzene, toluene and xylene
- Aromatic hydrocarbons ⁇ ⁇ ⁇ ⁇ , ⁇ dimethylformamide, ⁇ , ⁇ dimethylacetamide and amides such as 1-methyl-2-pyrrolidone; sulfoxides such as dimethyl sulfoxide; esters such as ethyl acetate and butyl acetate; And 2-ketones such as butanone; methanol, ethanol Examples include alcohols such
- the amount of the base used is preferably 2 to 10 times mol, more preferably 2 to 4 times mol, as long as it is 1 mol or more with respect to the compound of the general formula [7].
- Examples of the palladium catalyst used in this reaction include noradium carbon and Metal palladium such as noradium black; inorganic palladium salts such as palladium chloride; organic palladium salts such as palladium acetate; tetrakis (triphenylphosphine) palladium (0), bis (triphenylphosphine) palladium (II) chloride, 1, 1, 1 Bis (diphenylphosphino) phenolic palladium (II) chloride and organic palladium complexes such as tris (dibenzylideneacetone) dipalladium (0); and polymer-supported bis (acetate) triphosphine palladium (II) and polymer-supported di (acetato) dicyclohexylphosphine palladium (II) and other polymer-fixed organic palladium complexes.
- the amount of the palladium catalyst used is not particularly limited, but is preferably 0.0001 to 1 mole, more
- the ligands optionally used in this reaction include, for example, trialkylphosphines such as trimethylphosphine and tri (tert-butyl) phosphine; tricycloalkylphosphines such as tricyclohexylphosphine; Triaryl phosphines such as triphosphine and tritolyl phosphines; Trialkyl phosphites such as trimethyl phosphite, triethyl phosphite and tributyl phosphite; Tricycloalkyl phosphites such as tricyclohexyl phosphite; Triphenyl phosphite etc.
- trialkylphosphines such as trimethylphosphine and tri (tert-butyl) phosphine
- tricycloalkylphosphines such as tricyclohexylphosphine
- Triaryl phosphines such as
- the amount of the ligand used is not particularly limited, but is preferably 0.0001 to 2 times mol, more preferably 0.005 to 0.2 times mol, of the compound of the general formula [7].
- Examples of the reducing agent optionally used in this reaction include hydrogenation such as lithium borohydride, sodium borohydride, calcium borohydride, sodium triacetoxyborohydride, and sodium cyanoborohydride.
- Examples include boron complex compounds.
- the amount of the reducing agent to be used is not particularly limited, but is preferably 0.0001 to 1 times mol, more preferably 0.01 to 0.1 times mol for the compound of the general formula [7].
- the amount of the compound of the general formula [8] or a salt thereof used is 1 to 5 with respect to the compound of the general formula [7]. Double mole, preferably 1 to 2 mole.
- This reaction may be performed at 0 to 200 ° C, preferably 50 to 150 ° C for 1 minute to 24 hours.
- the compound of general formula [10] or a salt thereof is reacted with an acid or a base in the presence or absence of water or in the presence or absence of an alcohol. And can be produced by subjecting to a decarboxylation reaction as necessary.
- This reaction is usually carried out in the presence of a solvent, and the solvent used is not particularly limited as long as it does not adversely influence the reaction.
- aliphatics such as hexane and cyclohexane are used.
- Hydrocarbons Halogenated hydrocarbons such as methylene chloride, chloroform, and dichloroethane; Ethers such as tetrahydrofuran, 1,2-dimethoxyethane, bis (2-methoxyethyl) ether and dioxane; benzene, toluene and xylene
- Aromatic hydrocarbons ⁇ ⁇ ⁇ ⁇ , ⁇ dimethylformamide, ⁇ , ⁇ dimethylacetamide and amides such as 1-methyl-2-pyrrolidone; sulfoxides such as dimethyl sulfoxide; esters such as ethyl acetate and butyl acetate; And 2-ketones such as butanone; methanol, ethanol Alcohols such as but
- the amount of the solvent used is not particularly limited, but is preferably 1 to 50 times (v / w), more preferably 1 to 15 times (v / w) of the compound of the general formula [9] or a salt thereof. w).
- Examples of the acid used in this reaction include inorganic acids such as hydrochloric acid, sulfuric acid, phosphoric acid, hydrogen chloride, and hydrogen bromide; organic acids such as acetic acid, trichlorodiacetic acid, and trifluoroacetic acid. And boric acid; and organic sulfonic acids such as methanesulfonic acid and p-toluenesulfonic acid.
- the amount of the acid to be used is preferably 0.001 to 5 times the mol of the compound of the general formula [9] or a salt thereof.
- An acid may be used as a solvent.
- the amount of the base to be used is 2 to 10 times mol, preferably 2 to 5 times mol, of the compound of the general formula [9] or a salt thereof.
- the amount of water optionally used in this reaction is not particularly limited, but preferably 0.5 to 5 times the amount of the compound of the general formula [9] or a salt thereof (v) in order to have a function as a solvent. / w).
- alcohols optionally used in this reaction include primary alcohols such as methanol, ethanol, propanol and butanol; and glycols such as ethylene glycol, propylene glycol and diethylene glycol.
- the amount of alcohol used is not particularly limited, but is preferably 0.5 to 5 times (v / w) based on the compound of the general formula [9] or a salt thereof in order to provide a function as a solvent.
- This reaction may be carried out at 0 to 200 ° C., preferably 20 to 150 ° C. for 1 minute to 24 hours.
- the decarboxylation reaction carried out as necessary is carried out by heating in the presence or absence of an acid.
- Acids optionally used in this reaction include, for example, inorganic acids such as hydrochloric acid, sulfuric acid, phosphoric acid, hydrochloric acid and hydrogen bromide; organic carboxylic acids such as acetic acid, trichlorodiacetic acid and trifluoroacetic acid; and And organic sulfonic acids such as methanesulfonic acid and p-toluenesulfonic acid.
- the amount of the acid used is 0.001 times mol or more, preferably 0.01 to 5 times mol for the compound of the general formula [9] or a salt thereof.
- acid It may be used as a solvent.
- This reaction may be carried out in the presence of a solvent, if necessary.
- the solvent used is not particularly limited as long as it does not adversely affect the reaction.
- aliphatic hydrocarbons such as hexane and cyclohexane
- halogens such as methylene chloride, chloroform, and dichloroethane.
- Hydrocarbons such as tetrahydrofuran, 1,2-dimethoxyethane, bis (2-methoxyethyl) ether and dioxane; aromatic hydrocarbons such as benzene, toluene and xylene; ⁇ , ⁇ dimethylformamide, ⁇ , Amides such as ⁇ ⁇ ⁇ ⁇ -dimethylacetamide and 1-methyl-2-pyrrolidone; Sulfoxides such as dimethylsulfoxide; Esters such as ethyl acetate and butyl acetate; Ketones such as acetone and 2-butanone; Methanol, ethanol, propanol , Butanol, 2 pro And alcohols such as 2-methyl 2-propanol; glycols such as ethylene glycol, propylene glycol and diethylene glycol; -tolyls such as acetonitrile; and water. These may be used as a mixture. Good.
- This reaction may be carried out at 50 to 200 ° C, preferably 50 to 150 ° C for 1 minute to 24 hours.
- 2- (1 benzothiophene 5-yl) ethanol which is a compound of the formula [15] is subjected to a hydrolysis reaction of the compound of the general formula [11] or a salt thereof as necessary, and the compound of the formula [14]
- the compound (1 benzothiophene 5-yl) acetic acid or a salt thereof can be derived and then subjected to a reduction reaction in which an activator is added in the presence of an alkali metal borohydride.
- This reaction is usually carried out in the presence of a solvent, and the solvent used is not particularly limited as long as it does not affect the reaction.
- a solvent for example, tetrahydrofuran, 1,2-dimethoxyethane, bis Acetates such as (2-methoxyethyl) ether and dioxane And the like, and tetrahydrofuran is preferred.
- these solvents can be used for halogenated hydrocarbons such as methylene chloride and chloroform, aromatic hydrocarbons such as benzene, toluene and xylene; and aliphatic hydrocarbons such as hexane, cyclohexane and octane. You may mix and use.
- the amount of the solvent to be used is not particularly limited, but preferably 1 to 20 times (v / w), more preferably 2 to 10 times (v / w) the compound of the formula [14] or a salt thereof. / w).
- alkali metal borohydride used in this reaction examples include sodium borohydride, lithium borohydride, and potassium borohydride.
- Sodium borohydride is preferred.
- the amount of alkali metal borohydride to be used is preferably 1 to 10 times mol, more preferably 1 to 2 times mol for the compound of the formula [14] or a salt thereof. It is.
- Examples of the activator used in this reaction include proton acids such as sulfuric acid, hydrogen chloride, and trifluoroacetic acid, and sulfuric acid and hydrogen chloride are more preferable.
- the amount of the active agent used varies depending on the type of the activator. For example, in the case of sulfuric acid, the amount is preferably 0.5 to 1 times, more preferably 0.5 to 0.6 times the amount of alkali metal borohydride. is there.
- the addition time of the activator varies depending on the type of the activator, but in the case of sulfuric acid, it is preferably 10 minutes to 6 hours, more preferably 30 minutes to 2 hours.
- the activator may be added after appropriately dissolving in a solvent.
- the reaction temperature is not particularly limited, but is preferably 20 to 150 ° C, and preferably 0 to 80 ° C. Furthermore, by adding an activator at 0 to 30 ° C. and then reacting at 40 to 80 ° C., the formation of by-products can be suppressed, which is more preferable.
- the reaction time is not particularly limited, but it is preferably 10 minutes to 50 hours, and preferably 1 to 20 hours.
- the hydrolysis reaction of the compound of the general formula [11] or a salt thereof carried out as necessary may be carried out by a reaction known per se, for example, in the presence of a base.
- a reaction known per se for example, in the presence of a base.
- it can be derived into a compound of the formula [14] or a salt thereof.
- This reaction is usually carried out in the presence of a solvent, and the solvent used is not particularly limited as long as it does not affect the reaction.
- a solvent for example, hexane and cyclohexane are used.
- Aliphatic hydrocarbons such as hexane; Aromatic hydrocarbons such as benzene, toluene and xylene; Halogenated hydrocarbons such as methylene chloride and chloroform, Tetrahydrofuran, 1,2-dimethoxyethane, Bis ( Ethers such as 2-methoxyethyl) ether and dioxane; sulfoxides such as dimethyl sulfoxide; alcohols such as methanol, ethanol, propanol, butanol, 2-propanol and tert-butanol; and water.
- the solvent may be used as a mixture
- Preferred solvents include mixed solvents of aromatic hydrocarbons and alcohols such as benzene, toluene and xylene, mixed solvents of alcohols and water, mixed solvents of toluene and methanol, and mixed solvents of methanol and water. preferable.
- the amount of the solvent to be used is not particularly limited, but preferably 0.5 to 10 times (v / w), more preferably 0.5 to 5 times (v / w) the compound of the general formula [11] or a salt thereof. w)
- Preferred bases include inorganic bases, more preferably sodium hydroxide and potassium hydroxide.
- the amount of the base used is preferably 1 to 3 mol, more preferably 1 mol or more, with respect to the compound of the general formula [11] or a salt thereof.
- This reaction is preferably carried out by adding water.
- the amount of water to be added should be at least 1 mol per mol of the compound of general formula [1 1] or a salt thereof, preferably 0.1 to 10 times (v / w) in order to have a function as a solvent. More preferably, the amount is 0.3 to 2 times (v / w).
- the reaction temperature is not particularly limited, but is preferably 10 to 40 ° C. as long as it is from 0 ° C. to the boiling point of the solvent or less.
- the reaction time is not particularly limited, but 10 to 50 hours is sufficient, and 1 to 24 hours is preferable.
- the thus obtained compound of the formula [14] or a salt thereof can be isolated from the reaction mixture by a usual method after completion of the reaction. For example, after the reaction is complete, acidify with dilute hydrochloric acid. It can be isolated by distilling off the solvent after extraction with an organic solvent such as toluene. Further, a base can be added to the extract to isolate it as a salt.
- the salt of the compound of the formula [14] is not particularly limited as long as it is a commonly known salt in an acidic group such as a carboxyl group.
- a salt with an alkali metal such as sodium, potassium and cesium; calcium and Salts with alkaline earth metals such as magnesium; ammonium salts; And salts with nitrogen-containing organic bases such as dicyclohexylamine.
- Preferred salts include salts with alkali metals such as sodium and potassium, with sodium salts being more preferred.
- a compound of the formula [16] can be produced by subjecting the compound of the formula [15] to Atariguchi-tolyl and Michael addition reaction in the presence of a base.
- This reaction is usually carried out in the presence of a solvent, and the solvent used is not particularly limited as long as it does not affect the reaction.
- aliphatic carbonization such as hexane and cyclohexane is used.
- Hydrogen Aromatics such as benzene, toluene and xylene Hydrocarbons; Halogenated hydrocarbons such as methylene chloride and chloroform, ethers such as tetrahydrofuran, 1,2-dimethoxyethane, bis (2-methoxyethyl) ether and dioxane; Sulfoxides such as dimethyl sulfoxide And tertiary alcohols such as tert-butanol and tert-amyl alcohol.
- Preferable solvents include aromatic hydrocarbons alone and aromatic hydrocarbons, mixed solvents of ethers and tertiary alcohols, and aromatic hydrocarbons alone, aromatic hydrocarbons and ethers.
- Solvent mixtures of aromatic hydrocarbons and tertiary alcohols are preferred, mixed solvents of toluene, toluene and tetrahydrofuran, mixed solvents of toluene and tert-butanol, and mixtures of toluene and tert-amyl alcohol A solvent is more preferred.
- the amount of the solvent to be used is not particularly limited, but is preferably 0.5 to 10 times (v / w), more preferably 0.5 to 3 times (v / w) the amount of the compound of formula [15].
- a small amount of a primary alcohol such as methanol and ethanol; a secondary alcohol such as 2-propanol; and water may be mixed with these solvents as additives.
- the amount of the additive used is 0.5 times the amount (v / w) or less, preferably 0.1 times the amount (v / w) or less of the compound of the formula [15].
- Bases used in this reaction include, for example, 1,8-diazabicyclo [5.4.0] undec-7-en (DBU), tetramethylammonium hydroxide and benzyltrimethylammonium.
- the amount of the base used is 0.0001 times mol or more, preferably 0.01 to 0.1 times mol for the compound of the formula [15].
- This reaction may be performed in the presence of a catalyst.
- Catalysts used as desired include the commonly known quaternary ammonium salts, such as tetrabutylammonium bromide, benzyltrimethylammonium chloride and benzylylbromide. Trimethylammo-um Is preferred.
- the amount of the catalyst used is 0.0001 times mol or more, preferably 0.01 to 0.1 times mol for the compound of the formula [15].
- an inorganic base such as sodium hydroxide or potassium hydroxide is used as the base, it is preferably carried out in the presence of a catalyst.
- the amount of acrylonitrile used in this reaction is preferably 1 to 2 moles compared to the compound of the formula [15].
- the reaction temperature is not particularly limited, but 0 ° C. force may be used as long as it is not higher than the boiling point of the solvent.
- the reaction time is not particularly limited, but it may be 1 minute to 24 hours, preferably 30 minutes to 4 hours.
- the compound of the general formula [2] By subjecting the compound of the formula [16] to a reaction with the alcohol of the general formula [1] in the presence of an acid, the compound of the general formula [2] can be produced.
- Examples of the acid used in this reaction include inorganic acids such as hydrochloric acid, sulfuric acid, hydrogen chloride and hydrogen bromide; and organic sulfonic acids such as methanesulfonic acid and p-toluenesulfonic acid.
- Preferred acids include inorganic acids, and sulfuric acid and salt hydrogen are more preferred.
- the amount of the acid used is preferably 2 to 10 times the mol of the compound of the formula [16], which varies depending on the amount of the solvent used.
- Alcohols of general formula [1] used in this reaction include linear alkyl alcohols such as methanol, ethanol, propanol, butanol and pentanol; branched alkyl alcohols such as isobutyl alcohol; methoxyethanol, And substituted alkyl alcohols such as chloroethanol and cyclohexaneethanol; and aralkyl alcohols such as benzyl alcohol and phenethyl alcohol.
- examples of the alcohol include linear alkyl alcohols, and methanol, ethanol, propanol and butanol are more preferable.
- the amount of alcohol used should preferably be at least 1 mole per mole of the compound of formula [16]. In order to provide a function as a medium, the amount is 0.5 to 10 times (v / w), more preferably 0.5 to 5 times (v / w).
- This reaction may be carried out in the presence of a solvent.
- the solvent to be used is not particularly limited, and examples thereof include those similar to the Michael addition reaction.
- the reaction temperature is not particularly limited, but is preferably 20 to 150 ° C as long as it is from 0 ° C to the boiling point of the solvent.
- the reaction time is not particularly limited, but 10 to 50 hours is sufficient, and 1 to 24 hours is preferable.
- a compound of the formula [17] or a salt thereof can be produced by hydrolyzing the compound of the general formula [2] in the presence of a base.
- This reaction is usually carried out in the presence of a solvent, and the solvent used is not particularly limited as long as it does not affect the reaction.
- aliphatic carbonization such as hexane and cyclohexane is used.
- Sulphoxides Sulphoxides
- alcohols such as methanol, ethanol, propanol, butanol, 2-propanol and tert-butanol; and water.
- solvents may be used as a mixture.
- the solvent include a mixed solvent of alcohol and alcohol used in the esterification reaction, and a mixed solvent of alcohol and water, and a mixed solvent of toluene and methanol and a mixed solvent of methanol and water are more preferable.
- the amount of solvent used is not particularly limited, but preferably The amount of the compound of the general formula [2] is 0.5 to 10 times (v / w), more preferably 0.5 to 3 times (v / w).
- Preferred bases include inorganic bases, more preferably sodium hydroxide and potassium hydroxide.
- the amount of the base used is preferably 1 to 3 times the mol of the compound of the general formula [2].
- This reaction is preferably performed by adding water.
- the amount of water to be added should be 1 mol or more with respect to the compound of general formula [2], preferably 0.1 to 10 times (v / w), more preferably 0.3 to Double amount (v / w).
- the reaction temperature is not particularly limited, but is preferably 10 to 40 ° C. as long as it is from 0 ° C. to the boiling point of the solvent or less.
- the reaction time is not particularly limited, but 10 to 50 hours is sufficient, and 1 to 24 hours is preferable.
- the thus obtained compound of the formula [17] or a salt thereof can be isolated from the reaction mixture by a usual method after completion of the reaction.
- it can be isolated by acidifying with dilute hydrochloric acid, extracting with an organic solvent such as toluene, and then distilling off the solvent. Further, a base can be added to the extract to isolate it as a salt.
- the salt of the compound of the formula [17] is not particularly limited as long as it is a commonly known salt in an acidic group such as a carboxyl group.
- a salt with an alkali metal such as sodium, potassium and cesium; calcium and Salts with alkaline earth metals such as magnesium; ammonium salts; and trimethylamine, triethylamine, tributylamine, N 2, ⁇ -diisopropylethylamine, pyridine, ⁇ -methylbiperidine, ⁇ -methylmorpholine, jetylamine
- Preferred salts include salts with alkali metals such as sodium and potassium, with sodium salts being more preferred.
- the compound of formula [18], 1- (3- (2- (1-benzothiophene 5 yl) ethoxy) propiol) azetidine 3 ol is obtained after derivatizing the compound of formula [17] or a salt thereof into a reactive derivative. It can be produced by subjecting it to an amidation reaction with 3-azetidinol or a salt thereof in the presence of a base.
- the compound of the formula [17] or a salt thereof can be derived into a reactive derivative by reacting with an activator.
- Examples of the reactive derivative include acid halides, acid anhydrides, active amides, and active ester esters, and acid neurogens are preferred! /.
- Examples of the method for derivatization into the reactive derivative include derivatization to acid norogenides using halogenating agents such as chlorothionyl, chloroxalyl, phosphorus trichloride and phosphorus pentachloride; Derivation to acid anhydrides by condensation with acid halides such as isobutyl acid and pivaloyl chloride; condensation with imidazole and derivatization to active amides using active amide agents such as carbodimidazole And derivatization to active esters by condensation with p-to-phenol and 2-mercaptobenzothiazole.
- an acid chloride using a halogenating agent, and a derivative derived from a salt salt are preferred, and a derivative derived from an acid chloride is more preferred.
- the amount of activator used in this induction varies depending on the type of activator. For example, in the case of thionyl chloride, it should be 0.5 mol or more based on the compound of the formula [17] or a salt thereof. Is 1 to 2 moles.
- This reaction is usually carried out in the presence of a solvent, and the solvent used depends on the reaction.
- aliphatic hydrocarbons such as hexane and cyclohexane
- Aromatic hydrocarbons such as benzene, toluene, and xylene
- Halogenated hydrocarbons ethers such as tetrahydrofuran, 1,2-dimethoxyethane, bis (2-methoxyethyl) ether and dioxane
- ethers such as tetrahydrofuran, 1,2-dimethoxyethane, bis (2-methoxyethyl) ether and dioxane
- ⁇ , ⁇ dimethylformamide, ⁇ , ⁇ dimethylacetamide and 1-methyl- Amides such as 2-pyrrolidone
- Sulfoxides such as dimethyl sulfoxide
- Esters such as methyl acetate and ethyl acetate
- Ketones such as acetone and 2-butanone
- Preferred solvents include aromatic hydrocarbons such as benzene, toluene and xylene, and ethers such as tetrahydrofuran, 1,2-dimethoxyethane, bis (2-methoxystil) ether and dioxane. , 2-dimethoxyethane is more preferred.
- the amount of the solvent used is not particularly limited, but preferably 1 to 20 times (v / w), more preferably 1 to 10 times (v / w) of the compound of the formula [17] or a salt thereof. w).
- reaction temperature is not specifically limited, Preferably it is 60-150 degreeC, More preferably, it is 30-120 degreeC.
- the reaction time is not particularly limited, but is 10 minutes to 50 hours, preferably 30 minutes to 20 hours.
- the reactive derivative of the compound of the formula [17] or a salt thereof thus derived can be isolated and purified, it is preferable to proceed to the next reaction without isolation.
- the compound of the formula [18] can be produced by reacting the solution of the reactive derivative of the compound of the formula [17] or a salt thereof with 3azetidinol or a salt thereof in the presence of a base.
- Bases used in this reaction include, for example, organic bases such as triethylamine, diisopropylethylamine, 1,8 diazabicyclo [5.4.0] undeque 7 (DBU) and pyridine; and sodium hydroxide, hydroxy acid Inorganic bases such as potassium, sodium carbonate, potassium carbonate, sodium bicarbonate, and potassium bicarbonate.
- Preferred bases include inorganic bases, more preferably sodium hydroxide.
- the amount of the base used is preferably 1 to 10 moles, more preferably 1 mole or more based on the compound of the formula [17] or a salt thereof.
- the amount of azetidinol or a salt thereof used is preferably 1 to 2 times the mole of the compound of the formula [17] or a salt thereof.
- 3-azetidinol or a salt thereof is preferably used in an aqueous solution.
- the amount of water used to dissolve 3-azetidinol or a salt thereof is not particularly limited, but preferably 1 to 20 times (v / w) the amount of the compound of formula [17] or a salt thereof.
- the amount is preferably 1 to 10 times (v / w).
- reaction temperature is not specifically limited, Preferably it is 60-100 degreeC, More preferably, it is 30-50 degreeC.
- the reaction time is not particularly limited, but is 10 minutes to 50 hours, preferably 30 minutes to 20 hours.
- the compound of the formula [18] obtained in this way is subjected to a reaction by heating and cooling after completion of the reaction and, if necessary, post-treatment such as neutralization of the reaction solution and dilution with water. It can be crystallized from the liquid and isolated and purified.
- the compound of the formula [19] is a compound of the formula [18] in the presence of an alkali metal borohydride, 1- (3- (2- (2- (1 benzothiophene 5 yl) ethoxy) propyl) azetidin 3-ol or a salt thereof.
- an activator such as a protonic acid, a methylating agent and a silylating agent is added.
- This reaction is usually carried out in the presence of a solvent, and the solvent used is not particularly limited as long as it does not affect the reaction.
- a solvent for example, tetrahydrofuran, 1,2-dimethoxyethane, bis Examples include ethers such as (2-methoxyethyl) ether and dioxane, and tetrahydrofuran is more preferable.
- These solvents can also be used as methyl chloride.
- Halogenated hydrocarbons such as chlorobenzene and chloroform; aromatic hydrocarbons such as benzene, toluene and xylene; and aliphatic hydrocarbons such as hexane, cyclohexane and octane. May be.
- the amount of the solvent used is preferably 1 to 20 times (v / w), more preferably 3 to 10 times (v / w) of the compound of the formula [18].
- alkali metal borohydride used in this reaction examples include sodium borohydride, lithium borohydride, and potassium borohydride.
- Sodium borohydride is preferable.
- the amount of alkali metal borohydride to be used is preferably 1 to 10 times mol, more preferably 2 to 3 times mol, of the compound of formula [18].
- Examples of the activator used in this reaction include proton acids such as sulfuric acid, hydrogen chloride and trifluoroacetic acid; methylating agents such as dimethylsulfuric acid; and silylating agents such as trimethylsilyl chloride. Is mentioned.
- Preferred activators include protonic acids such as sulfuric acid and hydrogen chloride, with sulfuric acid being more preferred.
- the amount of activator used varies depending on the type of activator. For example, in the case of sulfuric acid, it is preferably 0.5 to 1 mole, more preferably 0.5 to 0.6 mole, relative to the alkali metal borohydride. is there.
- the addition time of the activator varies depending on the type of the activator, but in the case of sulfuric acid, it is preferably 10 minutes to 6 hours, more preferably 30 minutes to 4 hours.
- the activator may be dissolved in a suitable solvent and added.
- the amount of alkali metal borohydride used is 2.0 to 2.2 times the mole of the compound of formula [18], and the amount of sulfuric acid used is alkali metal borohydride,
- the molar ratio is 0.5 to 0.6 times and the dropping time of sulfuric acid is 1 to 4 hours, by-products can be further suppressed, and a highly pure compound of the formula [19] or a salt thereof can be obtained. it can.
- the reaction temperature is not particularly limited, but is preferably 20 to 150 ° C, and preferably 0 to 70 ° C.
- the reaction time is not particularly limited, but is preferably 10 minutes to 50 hours, and preferably 1 to 20 hours.
- the compound of formula [18] is suspended in ethers (3 to 10 times the volume (v / w))
- the compound of formula [18] which is preferably reacted at 30 to 70 ° C for 1 to 20 hours after adding remetall (2 to 3 times mol), adding an activator at 0 to 30 ° C Suspend in ethers (3 to 10 times the volume (v / w)), add sodium borohydride (2 to 3 times mole), and at 0 to 30 ° C, proton acid (0.5% to sodium borohydride)
- the compound of the formula [19] or a salt thereof thus obtained can be isolated by a usual method after completion of the reaction.
- 6.0 mol / L hydrochloric acid or the like is added to decompose the excess reducing agent, cooled to room temperature, made alkaline with an aqueous solution of sodium hydroxide and sodium chloride, and then with an organic solvent such as ethyl acetate. After extraction, it can be isolated by distilling off the solvent.
- an acid can also be added to an extract and it can also isolate as a salt.
- the salt of the compound of the formula [19] is not particularly limited as long as it is a commonly known salt in a basic group such as an amino group, and examples thereof include hydrochloric acid, hydrobromic acid, nitric acid and sulfuric acid.
- Salts with mineral acids salts with organic strength rubonic acids such as formic acid, acetic acid, citrate, oxalic acid, fumaric acid, maleic acid, succinic acid, phosphonic acid, tartaric acid, aspartic acid, trichloroacetic acid and trifluoroacetic acid; And salts with sulfonic acids such as methanesulfonic acid, benzenesulfonic acid, toluenesulfonic acid, mesitylenesulfonic acid and naphthalenesulfonic acid.
- Preferred salts include pharmacologically acceptable salts, and salts with maleic acid are more preferred.
- the present invention when isomers (for example, optical isomers), hydrates, solvates and various crystal forms exist, the present invention includes all of them.
- the production method of the present invention when there are isomers (for example, optical isomers), hydrates, solvates, and various crystal forms, the production method of the present invention is not limited to these. Everything can be used.
- the mixing ratio in the eluent is a volume ratio.
- the carrier in silica gel column chromatography is Fuji Silicon Chemical Co., Ltd., B. W. Silica gel, BW-127ZH or PSQ100B.
- a 550 mL solution of 585 g of potassium hydroxide was added dropwise at a temperature of 20 ° C. or lower to a suspension of 546 g of thiobutanol in 275 mL of water.
- a 825 mL solution of 492 g of acetic acid in black was added dropwise and stirred at 80 to 90 ° C. for 3 hours.
- the reaction mixture was cooled, adjusted to pH 1.5 with hydrochloric acid, and 1650 mL of methylene chloride and 550 mL of water were added.
- the organic layer was separated and anhydrous magnesium sulfate was added.
- Jetyl 2— (1 benzothiophene 5 yl) malonate 0.25 g of ethylene glycol l.OmL suspension was charged with 40% (w / w) potassium hydroxide aqueous solution l.OmL and water 0.3 mL, Refluxed for 2 hours. Water and toluene were added to the reaction mixture, and the aqueous layer was separated. The pH was adjusted to 2 using 6 mol / L hydrochloric acid, and ethyl acetate was added. The organic layer was separated and dried over anhydrous magnesium sulfate, and the solvent was distilled off under reduced pressure.
- the reaction mixture was added to a mixture of water and ethyl acetate and adjusted to pH 1 with 6 mol / L hydrochloric acid.
- the organic layer was separated and dried over anhydrous magnesium sulfate, and the solvent was distilled off under reduced pressure.
- tert-butyl 2- (1-benzothiophene 4-yl) 2 cyanoacetate 0.25 g ethylene glycol l.OmL solution, 40% (w / w) potassium hydroxide aqueous solution l.OmL and Water (0.3 mL) was added, and the mixture was stirred at 95 to 105 ° C for 1 hour. Water and toluene were added to the reaction mixture, and the aqueous layer was separated.
- the organic layer was separated, and adjusted to pH 13.6 by adding 60 mL of water and 5 mL of a 5 mol / L sodium hydroxide aqueous solution.
- the organic layer was separated, washed with water, the solvent was distilled off, and cyclohexane and toluene were collected.
- the precipitate was collected by filtration to obtain 16.5 g of a white solid (1-benzothiophene 5-yl) ethanol.
- reaction solution was cooled and adjusted to pH 6 with 7 mL of acetic acid. After stirring at 10-15 ° C for 1 hour, the precipitate was collected by filtration and collected as a white solid 1— (3 (2- (1 benzothiophene-5 yl) ethoxy) propiol) azetidine-3— All 31.9g was obtained.
- the chemical shift value of the 1 H-NMR ⁇ vector in DMSO-d is the value of Example 6-1.
- Ethyl acetate was added to the aqueous layer, and adjusted to ⁇ . ⁇ with 20% (w / w) aqueous sodium hydroxide solution.
- the organic layer was separated, washed successively with water and saturated aqueous sodium chloride solution, and dried over anhydrous magnesium sulfate.
- the solvent was removed by filtration, the solvent was distilled off under reduced pressure, 0.36 g of maleic acid was added to the residue, and the mixture was crystallized from 5 mL of ethyl acetate: 2 propanol (4: 1). 0.62 g of 3- (2- (1 benzothiophene 5-yl) ethoxy) propyl) azetidine 3-ol-maleate was obtained.
- the chemical shift value of the 1 H-NMR ⁇ vector in DMSO-d is the value of Example 6-1.
- the reaction mixture was concentrated under reduced pressure, water (OOmL) and ethyl acetate (lOOmL) were added, and the mixture was adjusted to ⁇ . ⁇ with a 5.0 mol / L aqueous sodium hydroxide solution.
- the organic layer was separated, washed with 50 mL of water, and adjusted to pHl.O with 6.0 mol / L hydrochloric acid.
- the aqueous layer was separated, 50 mL of ethyl acetate was collected, and then adjusted to ⁇ . ⁇ with a 5.0 mol / L sodium hydroxide aqueous solution. Separate the organic layer and dry anhydrous magnesium sulfate Insoluble matter was removed by filtration.
- the mixture was concentrated under reduced pressure, water and ethyl acetate were added, and the mixture was adjusted to pH 9.5 with 5.0 mol / L aqueous sodium hydroxide solution, and the organic layer was separated, washed with saturated aqueous sodium chloride solution, and then anhydrous.
- the process for producing 1 (3- (2- (1-benzothiophene-5yl) ethoxy) propyl) azetidine 3ol and a salt thereof according to the present invention is (1) safe for the human body.
Abstract
Description
Claims
Priority Applications (16)
Application Number | Priority Date | Filing Date | Title |
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EP06730075A EP1864978A4 (en) | 2005-03-28 | 2006-03-27 | PROCESS FOR PRODUCING 1- (3- (2- (1-BENZOTHIOPHEN-5-YL) -ETHOXY) PROPYL) AZETIDIN-3-OL OR ITS SALTS |
JP2007510482A JP5031554B2 (ja) | 2005-03-28 | 2006-03-27 | 1−(3−(2−(1−ベンゾチオフェン−5−イル)エトキシ)プロピル)アゼチジン−3−オールまたはその塩の製造法 |
CA2600381A CA2600381C (en) | 2005-03-28 | 2006-03-27 | Process for production of 1-(3-(2-(1-benzothiophen-5-yl)-ethoxy)propyl)azetidin-3-ol or salts thereof |
BRPI0609496A BRPI0609496C8 (pt) | 2005-03-28 | 2006-03-27 | derivado do éster do ácido propiônico |
US11/909,809 US7951963B2 (en) | 2005-03-28 | 2006-03-27 | Process for production of 1-(3-(2-(1-benzothiophen-5-yl)-ethoxy)propyl)azetidin-3-ol or salts thereof |
KR1020127032936A KR101337382B1 (ko) | 2005-03-28 | 2006-03-27 | 1-(3-(2-(1-벤조티오펜-5-일)에톡시)프로필)아제티딘-3-올 또는 그 염의 제조방법 |
AU2006229271A AU2006229271B2 (en) | 2005-03-28 | 2006-03-27 | Process for production of 1-(3-(2-(1-benzothiophen-5-YL)- ethoxy)propyl)azetidin-3-ol or salts thereof |
KR1020077024039A KR101283930B1 (ko) | 2005-03-28 | 2006-03-27 | 1-(3-(2-(1-벤조티오펜-5-일)에톡시)프로필)아제티딘-3-올또는 그 염의 제조방법 |
CN2006800102653A CN101151257B (zh) | 2005-03-28 | 2006-03-27 | 生产1-(3-(2-(1-苯并噻吩-5-基)乙氧基)丙基)氮杂环丁-3-醇或其盐的方法 |
NZ561672A NZ561672A (en) | 2005-03-28 | 2006-03-27 | Process for production of 1-(3-(2-(1-benzothiophen-5-yl)-ethoxy)propyl)azetidin-3-ol or salts thereof |
NO20074618A NO340071B1 (no) | 2005-03-28 | 2007-09-12 | Propionsyreester-derivat |
IL186044A IL186044A (en) | 2005-03-28 | 2007-09-18 | Procedure for the production of 3- (2- (1-benzothiovipan-5-yl) ethoxy) propionic acid or their salts and their intermediates |
US12/985,616 US8273902B2 (en) | 2005-03-28 | 2011-01-06 | Process for production of 1-(3-(2-(1-benzothiophen-5-yl)-ethoxy)propyl)azetidin-3-ol or salts thereof |
IL214245A IL214245A (en) | 2005-03-28 | 2011-07-21 | Procedure for the production of 1 - (3 - (2 - (- benzothiophene-5-ram) profile) azatidine-3-ol or salts thereof |
NO20161418A NO340366B1 (no) | 2005-03-28 | 2016-09-07 | Metode for fremstilling av 3-(2-(1-benzotiofen-5-yl)etoksy)propionsyre eller salter derav |
NO20161419A NO340420B1 (no) | 2005-03-28 | 2016-09-07 | Metode for fremstilling av 1-(3-(2-(1-benzotiofen-5-yl)-etoksy)propyl)azetidin-3-ol eller salter derav |
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JP2005206808 | 2005-07-15 | ||
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JP2005230666 | 2005-08-09 | ||
JP2005-230666 | 2005-08-09 |
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US11/909,809 A-371-Of-International US7951963B2 (en) | 2005-03-28 | 2006-03-27 | Process for production of 1-(3-(2-(1-benzothiophen-5-yl)-ethoxy)propyl)azetidin-3-ol or salts thereof |
US12/985,616 Division US8273902B2 (en) | 2005-03-28 | 2011-01-06 | Process for production of 1-(3-(2-(1-benzothiophen-5-yl)-ethoxy)propyl)azetidin-3-ol or salts thereof |
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US (2) | US7951963B2 (ja) |
EP (4) | EP2210884B1 (ja) |
JP (1) | JP5031554B2 (ja) |
KR (2) | KR101283930B1 (ja) |
CN (1) | CN101151257B (ja) |
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AU (1) | AU2006229271B2 (ja) |
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CA (2) | CA2600381C (ja) |
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ES (3) | ES2380443T3 (ja) |
IL (2) | IL186044A (ja) |
MX (1) | MX2007011938A (ja) |
NO (3) | NO340071B1 (ja) |
NZ (2) | NZ583580A (ja) |
PL (3) | PL2348022T3 (ja) |
PT (3) | PT2348022E (ja) |
SG (1) | SG155251A1 (ja) |
SI (3) | SI2210884T1 (ja) |
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