Classifications

• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K31/00—Medicinal preparations containing organic active ingredients
  • A61K31/33—Heterocyclic compounds
  • A61K31/395—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
  • A61K31/435—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with one nitrogen as the only ring hetero atom
  • A61K31/47—Quinolines; Isoquinolines
  • A61K31/4738—Quinolines; Isoquinolines ortho- or peri-condensed with heterocyclic ring systems
  • A61K31/4743—Quinolines; Isoquinolines ortho- or peri-condensed with heterocyclic ring systems condensed with ring systems having sulfur as a ring hetero atom
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K31/00—Medicinal preparations containing organic active ingredients
  • A61K31/33—Heterocyclic compounds
  • A61K31/395—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
  • A61K31/435—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with one nitrogen as the only ring hetero atom
  • A61K31/4353—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with one nitrogen as the only ring hetero atom ortho- or peri-condensed with heterocyclic ring systems
  • A61K31/4365—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with one nitrogen as the only ring hetero atom ortho- or peri-condensed with heterocyclic ring systems the heterocyclic ring system having sulfur as a ring hetero atom, e.g. ticlopidine
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K31/00—Medicinal preparations containing organic active ingredients
  • A61K31/60—Salicylic acid; Derivatives thereof
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K45/00—Medicinal preparations containing active ingredients not provided for in groups A61K31/00 - A61K41/00
  • A61K45/06—Mixtures of active ingredients without chemical characterisation, e.g. antiphlogistics and cardiaca
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
  • A61P11/00—Drugs for disorders of the respiratory system
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
  • A61P9/00—Drugs for disorders of the cardiovascular system
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
  • A61P9/00—Drugs for disorders of the cardiovascular system
  • A61P9/04—Inotropic agents, i.e. stimulants of cardiac contraction; Drugs for heart failure
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
  • A61P9/00—Drugs for disorders of the cardiovascular system
  • A61P9/06—Antiarrhythmics
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
  • A61P9/00—Drugs for disorders of the cardiovascular system
  • A61P9/08—Vasodilators for multiple indications
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
  • A61P9/00—Drugs for disorders of the cardiovascular system
  • A61P9/10—Drugs for disorders of the cardiovascular system for treating ischaemic or atherosclerotic diseases, e.g. antianginal drugs, coronary vasodilators, drugs for myocardial infarction, retinopathy, cerebrovascula insufficiency, renal arteriosclerosis

Definitions

• the present invention also relates to the use of a therapeutically effective amount of a compound of formula 1 or a pharmaceutically acceptable salt, solvate, prodrug, active metabolite, racemate or enantiomer thereof, in conjunction with a stent for treating and/or preventing recurrence of Cardiovascular Diseases.
• the present invention also provides the combination therapy of a compound of formula 1 or a pharmaceutically acceptable salt, solvate, prodrug, active metabolite, racemate or enantiomer thereof, in conjunction with a stent impregnated (coated) with the compound of formula I, a pharmaceutically acceptable salt, prodrug, active metabolite, racemate or enantiomer thereof, and/or other cardio-protective agent(s) for treating and/or preventing Cardiovascular Diseases and/or recurrences thereof.
• the present invention relates to themanufacture of a device coated or impregnated with a compound of formula 1 or a pharmaceutically acceptable salt, solvate, prodrug, active metabolite, racemate or enantiomer thereof, for the treatment, prevention or amelioration of Cardiovascular Diseases.
• Cardiovascular Diseases refers to diseases treatable, preventable, or able to be ameliorated by performance of interventional procedures including coronary (PCI) and non-coronary interventions.
• cardiovascular diseases encompassed by the invention include coronary occlusion, restenosis, acute coronary syndrome (ACS), high risk vascular diseases (HRVD), cerebro vascular aneurysm (CVA), congestive heart failure, cardiac alternation, ventricular aneurysm, mural aneurysm, myocardial infarction, cardiac arrest, cardiac dysrhythmia including atrial fibrillation, cardiac edema, cardiac dyspnea, cardiac failure, tachycardia, cardiac hemoptysis, cardiac incompetence, cardiac murmur, cardiac syncope, cardiac tamponade, cerebrovascular disease and or peripheral artery disease
• administering is intended to include various routes of administration, particularly oral, which allow for the compound of formula I to perform its intended function of treating and/or preventing the occurrence or recurrence of Cardiovascular Diseases as part of the combination therapy (treatment) with an interventional procedure such as a PCI procedure.
• Such administration by virtue of the combination treatment includes the performance of a PCI procedure e.g. the implantation of stent, or performance of balloon angioplasty.
• treatment refers to the amelioration, inhibition, prevention of occurrence or recurrence, reduction in severity or effect of cardiovascular diseases including but not limited to restenosis, acute coronary syndromes, myocardial infarction, cerebro vascular aneurysm, and high risk vascular diseases by the use of a PCI or other interventional procedure in conjunction with treatment with a compound of formula I.
• effective amount refers to the amount of a compound of formula I and/or other cardio protective agent (drug) necessary or sufficient to treat or prevent the particular Cadiovascular Disease in a treatment regimen comprised of a compound of formula 1 in conjunction with PCI or other interventional procedure as prescribed by a qualified treating physician.
• the effective amount may vary depending on factors known to one of skill in the art, including for example, the optional combination of compound 1 with aspirin, the use of drug coated stents, mode and regimen of administration, the size of the subject, genetic or behavioral predisposition to Cardiovascular Diseases or the severity and recurrence thereof.
• factors known to one of skill in the art including for example, the optional combination of compound 1 with aspirin, the use of drug coated stents, mode and regimen of administration, the size of the subject, genetic or behavioral predisposition to Cardiovascular Diseases or the severity and recurrence thereof.
• One of skill in the art would be able to consider these and . related factors to make the appropriate determination regarding effective amount.
• “Pharmaceutically acceptable carrier” refers to any substance co- administered with the compound of formula 1 (excluding of course the stent or other angioplasty devise) and which allows the compound to perform its intended function.
• examples of such carriers include solutions, solvents, dispersion media, delay agents, emulsions, microparticles and the like for combination therapies.
• phrases "combination therapy,” “combination treatment,” “in conjunction with,” “combination of a compound of formula I and stent,” and “in conjunction with a PCI procedure” if and as used herein are synonymous and indicate that a patient who is a candidate for a PCI or other interventional procedure is administered a therapeutically effective dose(s) of a compound of formula I or a pharmaceutically acceptable salt, prodrug, active metabolite, racemate or enantiomer thereof, optionally in combination with aspirin at a reasonable period of time prior to and/or after the PCI or other interventional procedure.
• a reasonable period of time for administering the compound of formula I, optionally with aspirin, prior to PCI or other interventional procedure may be up to about sixty days prior and may include no prior administration.
• the purpose of the prior administration is to achieve on-going beneficial effect plus a rapid onset of an effect on platelet function prior to the intervention procedure, and over and above the rapid onset characteristic of a compound of formula I, particularly the HC1 salt, thereby maximizing the potential benefit to the patient.
• the dosing of a, compound of formula I prior to an interventional procedure such as stenting or balloon angioplasty may not be practical or necessary in emergency situations.
• One embodiment of the present invention is the use of a pharmaceutical composition comprising a therapeutically effective amount of a compound of formula I, or pharmaceutically acceptable salt, solvate. racemate or enantiomer thereof, in conjunction with an interventional procedure such as PCI for the treatment and/or prevention of Cardiovascular Diseases and recurrence thereof.
• Also preferred for the purpose of the invention is the use of a compound of formula I, or a pharmaceutically acceptable salt, solvate, racemate or enantiomer thereof, in conjunction with a stent procedure for the treatment and/or prevention of restenosis in peripheral and/or cerebro vascular diseases.
• the active metabolite is a mixture of four enantiomers each of which has shown dose dependent anti-platelet aggregation ability, and thus useful for the practice of the invention.
• the RS enantiomer has been shown to be most potent and is therefore preferred.
• prodrug of the compound of formula I presented by formulae III and IV their respective pharmaceutically acceptable salts, solvates, racemates or enantiomers thereof:
• a 2-acetoxy-5-( ⁇ -cyclopropylcarbonyl-2-fluorobenzyl)-4, 5,6,7- tetrahydrothieno[3,2-c]pyridine or the acid addition salt has an asymmetric carbon in their molecule and in each compound two isomers having R and S configuration can exist.
• the present invention encompasses an individual iso er or a mixture of these isomers in optional proportions.
• An optically active isomer of 2-ac ⁇ toxy-5-( ⁇ -cyclopropylcarbonyl- 2-fluorobenzyl)-4,5,6,7-tetrahydrothieno[3,2-c]pyridine acid addition salt is prepared using an optically active starting material or is isolated from a racemic mixture of synthetically prepared 2-acetoxy-5-( ⁇ -cyclopropylcarbonyl-2-fluorobenzyl)-4,5,6,7- tetrahydrothieno[3,2-c]pyridine acid addition salt by a conventional optical resolution.
• the compound of formula I may be prepared by a variety of methods, particularly those disclosed in U.S. Patent No. 5,288,726, the entire content of which is incorporated herein by reference.
• the acid addition salts of the compound of formula 1 may be prepared following procedures disclosed in PCT application WO 02/04461 , published January 17, 2002.
• An acid salt of the compound of formula I (2-acetoxy-5-( ⁇ -cyclopropylcarbonyl-2- fluorobenzyl)-4,5,6,7-tetrahydrothieno[3,2-c]pyridine) is prepared in the presence or absence of an inert solvent but preferably in an inert solvent by addition of 2-acetoxy-5- ( ⁇ -cyclopropylcarbonyl-2-fluorobenzyl)-4,5,6,7-tetrahydrothieno[3,2-c]pyridine, which is synthesized by a method described in U.S. Patent No. 5,288,726, to an acid (preferably hydrochloric acid, hydrogen chloride (gas), or maleic acid; more preferably concentrated hydrochloric acid.
• an acid preferably hydrochloric acid, hydrogen chloride (gas), or maleic acid; more preferably concentrated hydrochloric acid.
• an inert solvent may also be prepared in the presence or absence of an inert solvent by dropwise addition or addition of an acid (preferably hydrochloric acid, hydrogen chloride (gas), or maleic acid; more preferably concentrated hydrochloric acid or maleic acid; most preferably concentrated hydrochloric acid) to 2-acetoxy-5-( ⁇ - cyclopropylcarbonyl-2-fluorobenzyl)-4,5,6.7-tetrahydrothieno[3,2-c]pyridine.
• the crystalline seeds of said salt can be added, if necessary.
• the amount of acid (preferably hydrochloric or maleic) to be added is from is from 0.1 equivalent to 2.0 equivalent, but preferably from 0.5 to 1.5 and more preferably about 1.0 equivalent of acid.
• the solvent used in the above reaction is not particularly restricted provided that it has no adverse effect on the reaction and it can dissolve a starting material in some extent.
• the example of such solvent includes an aliphatic hydrocarbon such as hexane, cyclohexane, heptane, liguloin or petroleum ether; an aromatic hydrocarbon such as benzene, toluene or xylene; a halogeno-hydrocarbon such as dichloromethane, chloroform, carbon tetrachloride, 1,2-dichloroethane, chlorobenzene, or dichlorobenzene; an ether derivative such as diethyl ether, diisopropyl ether, tetrahydrofuran, dioxane, dimethoxyethane or diethylene glycol dimethyl ether; a ketone derivative such as acetone, methyl ethyl ketone, or diethyl ketone; an ester derivative such as ethyl
• the preferable solvent is an ether derivative, a ketone derivative, an ester derivative, a carboxylic acid derivative, or a nitrile derivative
• more preferable solvent is tetrahydrofuran, dioxane, acetone, methyl ethyl ketone, ethyl acetate, acetic acid or acetonitrile
• still more preferable solvent is tetrahydrofuran, dioxane, acetic acid or acetone.
• Acetone is most preferred.
• the prefered solvent is an ether derivative, a ketone derivative, as ester derivative or a nitrile derivative. More preferred as solvent is tetrahydrofuran, dioxane, acetone, methyl ethyl ketone, ethyl acetate, or acetonitrile.
• Acetone is most preferred.
• the reaction temperature will vary with reagent, solvent and the like and usually is from -20 °C to 100 °C, preferably from 0 °C to 70 °C.
• the reaction temperature is from 30 °C to 60 °C and preferably from 40 °C to 55 °C.
• preparation of the maleic acid salt preferably reaction is carried out by addition 2-acetoxy-5-( -cyclopropylcarbonyl-2-fluorobenzyl)-4, 5,6,7- tetrahydrothieno[3,2-c]pyridine to a solution of maleic acid in acetone between 0 and 70
• reaction is carried out by dropwise addition of one and a half of required amounts of concentrated hydrochloric acid (usually equimolar with thienopyridine derivative) to a solution of 2-acetoxy-5-( -cyclopropylcarbonyl-2- fluorobenzyl)-4,5,6,7-tetrahydrothieno[3,2-c]pyridine in acetone between 35 °C and 60
• °C preferably between 45 and 55 °C
• crystalline seeds of said salt are added, followed by allowing to stand at said temperature for 30 minutes to 2 hours; and then by further dropwise addition of the residual half of required amounts of hydrochloride to the reaction mixture over from 30 minutes to 2 hours followed by allowing to stand at said temperature for 1 to 3 hours.
• Active metabolites are formed in-vivo but may also be prepared using procedures known to one of skill in the art or by modifications thereof as stated supra. Procedures and processes for making prodrugs are known to one of skill in the art or may be arrived at with minimal experimentation or modifications from those known to one of skill in the art. Prodrugs of the active metabolite may be formed in vivo or may be prepared by one of skill in the art using disclosed procedures for compound of formula 1 with variations thereof.
• the present invention encompasses the manufacture of a stent coated or impregnated with a compound of formula 1 or a pharmaceutically acceptable salt, solvate, prodrug, active metabolite, racemate or enantiomer thereof, for the treatment, prevention or amelioration of Cardiovascular Diseases.
• a stent impregnated or coated as above is supported by the superior, unexpected and beneficial effects of a compound of formula I compared to other cardiovascular agents coated on a stent hitherto.
• the practice of the invention comprises steps preferably in the order a) treatment of a patient in need of a PCI procedure with a therapeutically effective amount of a compound of formula 1, or a pharmaceutically acceptable salt, solvate, active metabolite, prodrug, racemate or enantiomer thereof, optionally in combination with aspirin or other cardio protective agent about 2 to 30 days prior to performing the PCI procedure b) performing the PCI procedure c) treatment of the patient with a therapeutically effective amount of a compound of formula 1, or a pharmaceutically acceptable salt, solvate, active metabolite, prodrug, racemate or enantiomer thereof, optionally in combination with aspirin or other cardio protective agent about 0 to 365 days after performance of the PCI procedure.
• a compound of formula I or a pharmaceutically acceptable salt, prodrug, active metabolite, racemate or enantiomer thereof, in conjunction with a stent is believed to achieve its beneficial therapeutic action by the unexpected effect of simultaneously providing stenting action (prevention of restenosis) and superior inhibition of platelet aggregation, and thereby treating and/or preventing Cardiovascular Diseases and/or recurrences thereof, more efficiently than with either the compound of formula I or stent alone.
• the advantages to be obtained by the use of a compound of formula 1 in conjunction with a stent or other PCI procedure are buttressed by the unexpectedly superior results for the compound of formula 1 compared to clopidogrel.
• the compound of formula I reduced the total area of cerebral infarct in rats, in a dose related manner compared to clopidogrel bisulfate which was about 10 times less potent though showing similar, yet milder effect on cerebral infarcts.
• a compound of formula 1, a pharmaceutically acceptable salt, prodrug, active metabolite, racemate or enantiomer thereof, and aspirin for the purpose of the invention, may be accomplished by having individual or unit doses of the compound of formula I and aspirin or by having a combined prepackaged or pre- formulated dose of aspirin and the compound, pharmaceutically acceptable salt, solvate, prodrug, racemate, or enantiomer of compound 1.
• a particularly preferred aspect of the present invention relates to a method for treating Cardiovascular Diseases such as acute coronary syndrome, cerebro vascular disease, high risk vascular disease, coronary occlusion, congestive heart failure, cardiac alternation, ventricular aneurysm, mural aneurysm, myocardial infarction, cardiac arrest, cardiac dysrhythmia, cardiac edema, cardiac dyspnea, cardiac failure, tachycardia, cardiac hemoptysis, cardiac incompetence, cardiac murmur, cardiac syncope, cardiac tamponade and peripheral vascular disease by the administration of a compound of formula 1 with or without aspirin in conjunction with a stent.
• Cardiovascular Diseases such as acute coronary syndrome, cerebro vascular disease, high risk vascular disease, coronary occlusion, congestive heart failure, cardiac alternation, ventricular aneurysm, mural aneurysm, myocardial infarction, cardiac arrest, cardiac dysrhythmia, cardiac edema, cardiac dyspn
• the specific dose of the compound of formula I administered according to the present invention to obtain therapeutic or prophylactic effect will, of course, be determined by the particular circumstances of the patient, including, for example, the route of administration and the particular Cardiovascular Disease being treated. Typical doses will contain a non-toxic dosage level of from about 0.01 mg/kg to about 50 mg/kg of body weight of a compound of formula I. More preferred doses of the compound of formula I are tablets or capsules containing from 5 mg to 100 mg of Active Ingredient per dose to an average weight patient or calibrated for the patient's weight and health characteristics. The frequency of dosing and length of dosing are determinations to be made by the treating physician(s) to achieve maximum efficacy for the particular patient and circumstance.
• the specific dose of aspirin in a combination with a compound of formula I or salt or prodrug thereof administered according to the present invention to obtain therapeutic or prophylactic effect will, of course, be determined by the particular circumstances of the patient.
• the amount of aspirin for the purpose of the present invention is about that generally approved for the particular patient population, e.g. from about 75 mg to about 300mg of aspirin 1 to 3 times daily.
• One preferred embodiment of the invention contemplates conjunctive treatment with a stent or other PCI procedure and a compound of formula I (with or without aspirin) wherein the compound of formula I is administered prior to and continues as prescribed for a reasonable period after the stent or other PCI procedure.
• the stent may be coated with cardio protective agents (drugs).
• the stent may be coated with cardio protective drugs that are amenable to localized delivery at or around the site of occlusion.
• Examples of drugs that may be coated onto stents and used in a combination treatment with a compound of formula 1 include active metabolites of compound 1, locally active statins, super statins, ACAT inhibitors, thienopyridines, aspirin, and Ilb/IIIa inhibitors or locally active formulations or derivatives thereof.
• Other agents useful for stent-coating for the purpose of the invention include for example, paclitaxel, and rapamycin.
• the dose of the coating drug preferably is a factor of a tenth to 20 times higher than a single, systemic or oral therapy of the same drug, or single dose formulation.
• the processes for manufacture of coated stents are known to one of skill in the art and are not the object of the present invention.
• any suitable carrier known to one of skill in the art may be used.
• the carrier may be a solid, liquid, or mixture of a solid and a liquid.
• the Active Ingredient may be dissolved in a suitable solvent at a concentration of about 2 to 200mg/mL in a 4% dextrose/0.5% Na citrate aqueous solution.
• Solid form formulations for impregnation on the stent include powders and pastes.
• a solid carrier can be one or more substance, which may also act as lubricants, solubilizers, suspending agents, and pharmaceutically acceptable adhesive agents.
• the carrier is a finely divided solid having the necessary binding properties in suitable proportions, which is in an admixture with the finely divided Active Ingredient.
• the powders will typically be sprayed on optionally followed by spray-on of annealing or sealing agents.
• the powders preferably contain from about 1 to about 99 weight percent of the Active Ingredient.
• Suitable solid carriers are magnesium carbonate, magnesium stearate, talc, sugar lactose, pectin, dextrin, starch, gelatin, tragacanth, methylcellulose, sodium carboxymethyl cellulose, pharmaceutically acceptable low melting waxes, and pharmaceutically acceptable adhesives.
• the Active Ingredient may be dissolved or suspended in a pharmaceutically acceptable carrier, such as sterile water, sterile organic solvent or a mixture of both.
• a pharmaceutically acceptable carrier such as sterile water, sterile organic solvent or a mixture of both.
• the Active ingredient may also be dissolved in a suitable organic solvent, for instance aqueous propylene glycol. Dispersing the finely divided Active ingredient in aqueous starch or sodium carboxymethy] cellulose solution, or binder or pharmaceutically acceptable adhesive may result in other compositions.
• the solution or suspension is then impregnated on a stent by coating the admixture of active ingredient on the stent and allowing the solvent to evaporate slowly under vacuum until nearly all solvent or liquid is evaporated.
• Active ingredient refers to a compound according to Formula (I) or a pharmaceutically acceptable salt, solvate, active metabolite, enantiomer or racemate or prodrug thereof with or without other cardio protective agent(s) which is/are to be administered to a patient in need thereof, in combination with a stent procedure.
• Hard gelatin powder is prepared using the following ingredients:
• Formulation 2 A solid composition of formula I is prepared using the ingredients below:
• Formulation 3 A solid composition of formula 1 is prepared using the ingredients below:
• the components are blended and compressed to form a solid each weighing 425 mg which is then tableted or capsiuled or admixed with a pharmaceutically acceptable adhesion agent.
• Example 3 The crystal Bl (0.1 g) obtained in Example 3 was added to the reaction mixture as crystalline seeds and the resulting mixture was stirred at the same temperature for 60 minutes. To the resulting mixture was further added dropwise concentrated hydrochloric acid (36%, 6.10 g) over 60 minutes and the mixture was stirred at the same temperature for 120 minutes. The resulting crystals were isolated by filtration and the o crystals were washed with acetone (100 ml) and then dried at 70 C under reduced pressure for 3 hours to give the title compound as white crystals (47.8 g, yield 92%) (crystal B2) which has more excellent storage stability than crystal Bl obtained in Example 3. mp l 65 - 178 °C
• the ethyl acetate was washed successively with water, saturated aqueous sodium bicarbonate solution, and saturated aqueous sodium chloride solution and dries over anhydrous sodium sulfate and then evaporated under reduced pressure.
• the residue was purified by chroinatography on a silica gel column using toluene as the eluant to afford the desired product (23 g containing solvent) as yellow liquid.

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• 2004
  • 2004-04-26 JP JP2006509943A patent/JP2006525328A/ja active Pending
  • 2004-04-26 EP EP04750031A patent/EP1660183A2/en not_active Withdrawn
  • 2004-04-26 WO PCT/US2004/011257 patent/WO2004098713A2/en not_active Ceased
  • 2004-04-26 US US10/553,763 patent/US20060217351A1/en not_active Abandoned

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