CN100404545C - Process for preparing crystalline ciclesonide with defined particle size - Google Patents

Process for preparing crystalline ciclesonide with defined particle size Download PDF

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CN100404545C
CN100404545C CNB2004800074813A CN200480007481A CN100404545C CN 100404545 C CN100404545 C CN 100404545C CN B2004800074813 A CNB2004800074813 A CN B2004800074813A CN 200480007481 A CN200480007481 A CN 200480007481A CN 100404545 C CN100404545 C CN 100404545C
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compound
formula
organic solvent
epimer
solvent
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CN1761678A (en
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K·埃斯泰特
S·考普
E·施图尔姆
B·施密德特
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Kevis Pharmaceutical Co ltd
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Nycomed GmbH
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Abstract

The invention relates to a novel process for preparing crystalline ciclesonide with an advantageous particle size and to the use for producing pharmaceutical preparations, in particular for topical use. The crystalline ciclesonide obtained by the novel process has advantageous aerodynamic properties, and can be further processed to inhalable or nasally administered pharmaceutical preparations without further mechanical micronization.

Description

Preparation method with crystallization ring shrinkage porosite of regulation particle diameter
Invention field
The present invention relates to prepare the novel method of the crystallization ring shrinkage porosite (ciclesonide) with favourable particle diameter and size distribution and relate in the purposes of producing aspect the particularly local pharmaceutical formulations that uses of pharmaceutical formulations.The crystallization ring shrinkage porosite for preparing with this novel method has favourable performance, but particularly aspect the pharmaceutical formulations that further production inhaling type or intranasal are taken.
The known technology background
US4605517 relates to the method that a kind of preparation has the steroide of control particle diameter, it comprises steroide is dissolved in the organic solvent, mix to make this steroide precipitation with the non-solvent of steroide by the solution that will obtain, and when mixing control mixing time and stirring extent.
People such as Sjoestroem [J.Pharm.Sci (1993), 82 (6), 584-9] have described and have a kind ofly prepared the method for water microsolubility active compound small particle by carry out sedimentary method in O/w emulsion., steroids cholesteryl acetate and β-Gu Zaichun are dissolved in the organic solvent for this reason, and in the presence of tensio-active agent, are prepared into emulsion with water.The evaporation of organic solvent produces the steroide precipitation that particle diameter is reduced to 25nm.
People such as Hem [J.Pharm.Sci (1967), 56 (2), 229-233] have described hydrocortisone and carried out crystalline mechanism in ultrasonic.
EP 142309 A2 have described a kind of method for preparing active compound, and this method is mixed by this active compound is dissolved in the organic solvent and with non-solvent.For this reason, epostane is dissolved in the dimethyl formamide (DMF), and adds entry.Its particle diameter of the precipitation that obtains in this way is in a very narrow size range.
People such as Ruch [Journal of Colloid and Interface Science (2000), 229 (1), 207-211] have described a kind of the precipitation and have prepared the method for particle diameter at the budesonide particulate of micrometer range in ultra sonic bath.For this reason, with water be added in the budesonide solution in ultrasonic up to obtain precipitation or, when budesonide is when being dissolved in the solvent mixture, unnecessary volatile solvent at room temperature to be volatilized.
WO 90/03782 relates to a kind of method for preparing finely-divided solid, by solid being dissolved in a kind of liquid carrier solvent to form a kind of injection liquid, and this injection liquid is added in the contrary solvent prepares, this contrary solvent is the liquefied gas or the dense steam of supercutical fluid, compression.
WO92/08730 has described the especially method of steroide of a kind of crystallization organic substance., this steroide is dissolved in the tertiary mixture of lipophilic solvent, hydrophilic solvent and surfactant for this reason, and carries out crystallization.In other words by having obtained predetermined with non-mechanical method and being uniform particle diameter.
WO 00/38811 has described the crystal fine grain that a kind of preparation has the regulation size distribution, particularly has the equipment of the particulate that is fit to the suction particle diameter.
The ring shrinkage porosite is a kind of INN title (international nonproprietary name) of compound, and chemical name is 16, the 17-[(cyclohexylmethylene) two (oxygen)]-11-hydroxyl-21-(2-methyl isophthalic acid-oxopropoxy) pregnant steroid-1,4-diene-3,20-diketone [11 β, 16 α (R)].DE-A 41 29 535 discloses ring shrinkage porosite and other the epimeric pregnant steroid-1 with anti-inflammatory action; 4-diene-3; 20-diketone 16; the preparation of 17-acetal 21-ester; it has butyl, sec.-propyl, sec-butyl, cyclohexyl or phenyl on ring acetal ring, and its C-21 hydroxyl is by ethanoyl or isobutyryl acidylate.Also described by preparation high pressure liquid chromatography (HPLC) method to begin corresponding R epimer is separated from the R/S mixture.International Patent Application WO 98/09982 A1 has described the method that a kind of method by fractional crystallization is encircled the epimer-enriched of shrinkage porosite R epimer., but the form of ring shrinkage porosite with the R/S mixture is dissolved under boiling temperature in the suitable water compatibility organic solvent for this reason, adds entry, and this mixture is cooled to room temperature.Yet, the ring shrinkage porosite of the R epimer-enriched that obtains in this way must be carried out particle diameter and the distribution of mechanical micronization then with the pharmaceutical formulations that obtains to be fit to suck.This need obtain the active compound as this method product in the chemosynthesis process of ring shrinkage porosite, wherein active compound has been to have to be suitable for directly carrying out the particle diameter of next step imbedibility preparation processing and the form of distribution.This may exempt extra mechanical micronization process and can avoid thus the possible shortcoming that mechanical micronization brings (for example danger of Wu Raning, too small particle formation, compare the suction that produces by the undefined structure of micronization product with crystalline texture and increase).
Invention is described
Be surprised to find, the ring shrinkage porosite in water miscible solvent dissolving and will encircle the shrinkage porosite solution crystallization ring shrinkage porosite that obtains-itself and the ring shrinkage porosite that the method for describing obtains compare-the have particle diameter of suitable suction that be added to the water subsequently in WO98/09982 A1-.Therefore may further save mechanical micronization in the preparation inhalable pharmaceutical formulations process.
Therefore the present invention relates to prepare the method for the formula I compound of crystallized form with regulation particle diameter,
Formula I
This method may further comprise the steps:
But a) solution of preparation I compound in suitable water compatibility organic solvent;
B) solution that obtains in adding a) of Xiang Shuizhong and
C) separate the formula I compound precipitation that forms.
The chemical name of formula I compound is 16, the 17-[(cyclohexylmethylene) two (oxygen)]-11-hydroxyl-21-(2-methyl isophthalic acid-oxopropoxy) pregnant steroid-1,4-diene-3, the 20-diketone [11 β, 16 α (R, S)].The R epimer of this compound (based on the absolute configuration on the C-22) has INN (international nonproprietary name) ring shrinkage porosite.Term formula I compound comprises pure R epimer, pure S epimer and with the mixture of the R/S epimer of any blending ratio and the pharmaceutically acceptable solvate of formula I compound according to the present invention.
The process of the inventive method is favourable from mainly being that the formula I compound of R epimer (based on the absolute configuration on the C-22) form begins.Mainly be that the pure form of epimerization is meant existence at least 90% in context according to the present invention, preferably at least 95%, particularly at least 97%, preferred at least 99% R epimer especially.This formula I compound that mainly is R epimer form can be by for example being similar to the synthetic method described in the WO02/38584 and carrying out subsequently that acylation obtains or obtain with the fractional crystallization of preparation HPLC or the R/S epimer mixture by the formula I compound described in International Patent Application WO 98/09982.
When carrying out method of the present invention, but with formula I compound dissolution in suitable water compatibility organic solvent.But the suitable water compatibility organic solvent of being mentioned according to the present invention is alcohol, for example methyl alcohol, ethanol, n-propyl alcohol and Virahol, acetone, tetrahydrofuran (THF) (THF) or dimethyl formamide (DMF) and with the mixture of any mixed.During this period solvent have 10 ℃ to the temperature between the boiling point of this solvent be favourable, preferably 15 ℃ of temperature of extremely hanging down 10 ℃ than this solvent boiling point, particularly 15 ℃ to 35 ℃, especially preferably from 20 ℃ to 25 ℃, and this solvent is very particularly preferably room temperature (being that the solvent temperature is corresponding with the temperature in the room that carries out this method).Can advantageously under agitation this solution be added to the water and maintain simultaneously the temperature of this solvent subsequently.Add fashionable special preferably carry out in the mode that drips.The temperature of water according to the present invention preferably at 10 ℃ to 50 ℃, preferred 15 ℃ to 40 ℃, very particularly preferably 20 ℃ to 30 ℃.In a preferred embodiment, water is room temperature (promptly corresponding with the temperature in the room that carries out this method).The amount of the employed solvent of dissolution type I compound depends on the character and the temperature of solvent.Use that to be enough to make the consoluet solvent of formula I compound at least be favourable, preferably multiple spot a little again.To select be favourable to the amount of employed water in the inventive method so that dissolved formula I compound can quantitatively precipitate after adding entry.
The precipitation that forms is preferably separated by the method that precipitation is shifted out solution according to the present invention, particularly by filtering-depositing, wash precipitation with water and carry out the exsiccant method subsequently and separate.
The formula I compound that the inventive method obtains has the particle diameter of regulation.The particle diameter of regulation is meant particle diameter and the Particle Distribution that is fit to suction according to the present invention.The form that is fit to suck is meant that having aerodynamic diameter is 1 to 10 μ m, preferably at 1 to 5 mu m range, particularly preferably in the particle diameter of 1 to 3 mu m range.Preferred herein preparation is that particle size determination shows X 50[unit: μ m] for being less than or equal to 10, and be preferred 7.5, and very preferably 3, preferred especially 2 preparation.The lay special stress on X according to the present invention 50Scope 1.8 to 2.0.X in the particle size determination 5050% the mean particle dia that is meant all particulate cumulative volumes is less than described value.The mensuration of size distribution can be undertaken by the method for for example making laser diffraction with known method on solid matter.According to the present invention size distribution preferably according to for example employed dried testing method is measured in Sympatec HELOS-laser-diffractometer or equivalent instrument (instrument parameter on the Sympatec HELOS-laser-diffractometer can by as the setting of getting off, for example: the test duration (5s), Shi Ji (1000ms), with reference to test time (5s), test specification/lens (R2 0.25/0.45..87.5 μ m), starting condition (0.000s behind the start button), dispersed modules (RHODOS+VIBRI), evaluation model (HRLD), the height of bed (2mm), output (50%), dispersion pressure (it is the evaluations of 3.30 crust to 3.70 Palestine and Israels and Fraunhofer diffracting diagram that 3.50 crust, the permission of actual measurement pressure change).
The crystallization that has provided preferred formula I compound according to the present invention can suck form, this compound has particle diameter at 1.5 μ m to 7.5 μ m, preferred 1.75 μ m to 6.5 μ m, preferred especially 1.85 μ m to 5.5 μ m, the particularly particulate of the maximum ratio of 2 to 5 mu m ranges.(when this scope is meant and sucks because its grain size and directly be not deposited in mouth or the larynx or because its fineness and the part that sucks of breathing out again).Exemplary embodiment of the present invention is that the particulate of wherein maximum 55% (volume) is less than or equal to 1.85 μ m, and the crystallization that at least 75% (volume) is less than or equal to the formula I compound of 4.5 μ m can suck form.Preferred compound is not the micronization form.The micronization form is meant that this compound has carried out mechanical micronization step (as mechanical mill) according to the present invention.
Formula I compound can prepare in a manner known way, for example described in the DE-A 41 29 535.Alternatively, formula I compound also can be from the corresponding 21-oxy-compound shown in the formula II
Figure C20048000748100091
Formula II
Prepare by carrying out acylation with suitable acylating reagent.This 21-oxy-compound is described in for example WO95/24416 and WO 02/38584 to some extent.Acylation in this case can with the known method of those skilled in the art for example the method described in the WO 98/09982 carry out.
Therefore the invention still further relates to a kind of preparation and have the method for formula I compound of the crystallized form of regulation particle diameter,
Formula I
This method may further comprise the steps:
A) come preparation I compound by coming that with suitable acylating reagent formula II compound is carried out acylation;
B) but but add the method for entry or the method by the suspension of heating-type I compound in the mixture of suitable water compatibility organic solvent and water in the solution by the formula I compound in being dissolved in suitable water compatibility organic solvent the formula I compound that obtains in a) carried out crystallization;
C) from water/solvent mixture, remove the precipitation of the R epimer-enriched of the formula I compound that obtains;
D) repeating step b if desired);
E) preparation is at the solution of compound in the mixable organic solvent of suitable water that step c) obtains;
F) Xiang Shuizhong adds e) in the solution that obtains and
G) separate the formula I compound precipitation that forms.
Be step a), the b that carries out the inventive method) and c), advantageously at elevated temperatures, particularly under the boiling point of use solvent, but the R/S epimer mixture of formula I is dissolved in the suitable water compatibility organic solvent.Advantageously under agitation particularly in this solution, add entry and after water adds, under agitation cool off preferred cool to room temperature under the situation of boiling temperature subsequently in the temperature that maintains this rising.Alternatively, but the R/S epimer mixture of formula I can be suspended in the mixture of water and suitable water compatibility organic solvent and by heating, the boiling point that particularly is heated to this solvent mixture dissolves.Subsequently this solution is under agitation cooled off, preferably be cooled to room temperature.Cooling is advantageously carried out under slower situation, preferably at 2 to 10 hours internal cooling.Can be advantageously by adding nucleus (for example crystal seed), preferably all use the crystal seed of the pure R epimer of formula I to influence subsequently fractional crystallization in all cases.But the suitable water compatibility representative examples of organic that can mention in the inventive method step b) is acetone or particularly alcohol for example Virahol, n-propyl alcohol, methyl alcohol and preferred ethanol, with and the mixture of any blending ratio.R/S epimer mixture for dissolving 0.18mol formula I use 190-700ml, but the suitable water compatibility organic solvent of preferred 300-400ml is favourable.But water compares preferably at 0.1-1[v/v with water compatibility volume of organic solvent] scope, particularly at 0.25-0.75[v/v] scope.
From solution, the R/S epimer mixture of the R epimer-enriched of formula I removed [step c)] by carrying out with mode well known by persons skilled in the art, particularly by filtering mode subsequently.
The process of the inventive method can be advantageously from the enrichment of R epimer, R epimerization body burden 〉=75% for example, formula I compound particularly 〉=85% begins.In addition, the acylation in the step a) is by carrying out with mode well known by persons skilled in the art, and is for example described in an embodiment by carrying out acylation with suitable acylating reagent such as isobutyric anhydride.
The formula I crystalline compounds with regulation particle diameter that obtains by the inventive method can also further be processed into pharmaceutical formulations (preferably not having further micronization step), and it also is suitable wherein combining with other pharmaceutically active compound.Formula I compound is with itself or preferably uses in pharmaceutical formulations with the form that combines with suitable drug excipient, for example with the form of tablet, coated tablet, capsule, suppository, paste, emulsion, suspension, gel or solution, wherein the content of active compound is favourable 0.1 to 95%.The preferred pharmaceutical formulations of mentioning is to come those of topical by lung with by mucous membrane especially nasal mucosa.
The vehicle that is suitable for required pharmaceutical formulations is that those skilled in the art are familiar with on its professional knowledge base.Except solvent, jelling agent, ointment base and other active compound carriers, can use for example antioxidant, dispersion agent, emulsifying agent, sanitas, solubilizing agent or infiltration accelerating agent.
The formula I compound that obtains by the inventive method preferably is used for treating respiratory tract disease with the form administration that sucks.For this reason, formula I compound comes administration with the direct administration of powder type or with the atomized soln that contains it or the form of suspension.This material preferably passes through inhalation with the form of aerosol for this reason, and the aerosol particulate of its solid, liquid or blending ingredients has 0.5 to 10 μ m, advantageously is the diameter of 2 to 6 μ m.
Aerosol can produce by for example pressure manipulation nozzle atomizer or ultrasonic nebulizer, but advantageously by the metered aerosol of propelling gas manipulation or producing from the capsular micronization active compound of imbedibility of the no propelling gas of use.
Depend on used sucker system, this pharmaceutical formulations also comprises essential vehicle for example propulsive gas such as HFA 134a or 227 except active compound), solvent (as ethanol), surfactant, emulsifying agent, stablizer, sanitas, perfuming agent, filler (lactose used) or other suitable active compound as powder inhalator.
The ring shrinkage porosite pharmaceutical formulations that is suitable for sucking or is suitable for nasal mucosa medicine administration with and produce and for example describing to some extent among US6120752, US 6264923, W001/028562, WO01/028563 or the DE 19541689.This pharmaceutical formulations can be produced by well known to a person skilled in the art method.Usually, with active substance (be formula I compound, if desired, can with other active compound in conjunction with) mix mutually with the carrier of forming by one or more vehicle.In this case, active compound is segmented in solid and/or liquid vehicle usually and and then is made required pharmaceutical formulations.
In order to suck purpose, a large amount of apparatuses can be for adopting, and this apparatus can produce the optimum grain-diameter aerosol and can use the inhalation method that is fit to the patient as far as possible to take.Except use annex (barrier sheet, spreader) and pear-shaped containers (as
Figure C20048000748100111
) and the automatic transmission driving mechanism of the aerosol that is used to measure (
Figure C20048000748100113
) outside, also can adopt a series of technical solutions, particularly for powder inhalator (as
Figure C20048000748100114
Figure C20048000748100115
Figure C20048000748100116
Or the technology of in EP 0 505 321, EP 407028, EP 650410, EP 691865, EP 725725, WO 99/21601, US 6120752 or US 6264923, describing), take with its best that can realize active compound.
About the composition and the production of nose administration pharmaceutical formulations, reference example such as WO 01/28562 and WO01/28563.
The following examples are further described the present invention without limitation.The RT stands for room temperature, min representative minute, h representative hour, m.p. represent fusing point, and abs. represents anhydrous.
Embodiment
1. the crystallization 16 that has the regulation particle diameter, the 17-[(cyclohexylmethylene) two (oxygen)]-11-hydroxyl-21-(the 2-methyl- The 1-oxopropoxy) pregnant steroid-1,4-diene-3, the preparation of 20-diketone [11 β, 16 α (R, S)]
With 16,17-[(cyclohexylmethylene) two (oxygen)]-11-hydroxyl-21-(2-methyl isophthalic acid-oxopropoxy) pregnant steroid-1,4-diene-3,20-diketone [11 β, 16 α (R, S)] are dissolved in the ethanol of appropriate amount under the listed temperature in table.Under listed water temperature, solution is joined in the water of described amount with the form that drips, under vigorous stirring, keep this temperature simultaneously.Suction filtration leaches precipitation, washes with water and drying.
X in the table 50By in Sympatec HELOS-laser-diffractometer or equivalent instrument [parameter: test duration (5s), Shi Ji (1000ms), with reference to test time (5s), test specification/lens (R2 0.25/0.45..87.5 μ m), starting condition (0.000s behind the start button), dispersed modules (RHODOS+VIBRI), evaluation model (HRLD), the height of bed (2mm), output (50%), the middle use of dispersion pressure (it is the evaluations of 3.30 crust to 3.70 Palestine and Israels and Fraunhofer diffracting diagram that 3.50 crust, the permission of actual measurement pressure change) is done testing method and is measured by laser diffraction.Form contrast with the crystallization method described in the WO 98/09982, do not observe the enrichment of epimer.
Embodiment Ethanol (ml/g) The ethanol temperature (℃) Water (ml/g) Water temperature (℃) Productive rate (%) X 50 (μm)
1 5 RT 25.5 RT 94 2.0
2 7.5 RT 25.5 RT 95 1.8
3 7.5 RT 12.5 RT 95-98 1.9
4 7.5 RT 7.5 RT 96 2.0
5 7.5 RT 12.5 10 94-96 1.6
6 7.5 RT 12.5 30 92-95 1.9
7 7 RT 10 RT 97 1.8
8 7 RT 12 40 97 1.8
9 6 RT 10 20 90-97 1.8
10 6 RT 6 20 97 2.0
11 2.2 50 6 20 96-98 1.8
12 2.2 50 10 20 96 2.8
13 3 40 7 20 96 2.1
14 4 30 8 20 96 1.8
15 4 30 8 30 96-97 1.9
16 10 20 10 20 97 1.9
2. Undertaken 16, the 17-[(cyclohexylmethylene by the method for describing among the WO 98/09982) two (oxygen)]-11- Hydroxyl-21-(2-methyl isophthalic acid-oxopropoxy) pregnant steroid-1,4-diene-3, the difference of 20-diketone [11 β, 16 α (R, S)] to The isomer enrichment
2.1 with 16 of 316g (584mmol), the 17-[(cyclohexylmethylene) two (oxygen)]-11-hydroxyl-21-(2-methyl isophthalic acid-oxopropoxy) pregnant steroid-1,4-diene-3,20-diketone [11 β, 16 α (R, S)], be called A (R/S epimer ratio is about 90/10 for thick product, oily) after this, be dissolved in 1.1 liters the abs. ethanol and under the ebullient situation, add 700ml water.Under vigorous stirring, this mixture is dropped to RT, and suction filtration leaches precipitation, with abs. ethanol/water=2/1 washing of 500ml and under 50 ℃ in vacuum drying oven dry 5h.
Productive rate: the A of 237g (438mmol, 75%), R/S epimer ratio is about 95/5.
m.p.199-201℃
Product is dissolved in the abs. ethanol of 900ml, and under the ebullient situation, adds 650ml water, and separation obtains product as stated above.
Productive rate: the A of 209g (386.5mmol, 88%), R/S epimer ratio is about 97/3.
m.p.201-203℃
Product is dissolved in the abs. ethanol of 800ml, and under the ebullient situation, adds 450ml water, and separation obtains product as stated above.
Productive rate: the A of 178g (329mmol, 85%), R/S epimer ratio is about 98.5/1.5.
m.p.205-206℃
Product is dissolved in the abs. ethanol of 600ml, and under the ebullient situation, adds 350ml water, and separation obtains product as stated above.
Productive rate: the A of 161g (298mmol, 90.5%), R/S epimer ratio>99.5/0.5.
m.p.206.5-207℃
2.2 the A (R/S epimer ratio is about 89/11) of 1.5g (2.77mmol) is dissolved in the abs. methyl alcohol of 3ml and under the ebullient situation, adds 1ml water.Under agitation this mixture is dropped to RT, and suction filtration leaches precipitation, carry out drying with a spot of methanol=3/1 washing and by as above condition.
Productive rate: the A of 1.21g (80.6%), R/S epimer ratio is about 93: 7.
2.3 the A (R/S epimer ratio is about 91.5/8.5) of 5g (9.25mmol) is dissolved in the Virahol that boils of 15ml, and adds 10ml water.Under agitation this mixture is dropped to RT, and suction filtration leaches precipitation, carry out drying with a spot of isopropanol=2/1 washing and by as above condition.
Productive rate: the A of 4g (80%), R/S epimer ratio is about 94/6.
2.4 the A (R/S epimer ratio is about 89/11) of 1.5g (2.77mmol) is dissolved in the boiling acetone of 4ml, and adds 1ml water.Under agitation make mixture drop to RT, and suction filtration leaches precipitation, carry out drying with a spot of acetone=2/1 washing and by as above condition.
Productive rate: the A of 1.12g (75%), R/S epimer ratio is about 95/5.
3. By the fractional crystallization method of describing among the WO 98/09982 obtain 16, the 17-[(cyclohexylmethylene) Two (oxygen)]-11-hydroxyl-21-(2-methyl isophthalic acid-oxopropoxy) pregnant steroid-1,4-diene-3,20-diketone [11 β, 16 α (R, S)] X 50 Value
Following table comprise by the method for describing among the WO 98/09982 obtain 16, the 17-[(cyclohexylmethylene) two (oxygen)]-11-hydroxyl-21-(2-methyl isophthalic acid-oxopropoxy) pregnant steroid-1,4-diene-3, the X of 20-diketone [11 β, 16 α (R, S)] 50Value (seeing embodiment 2).X 50Obtain by suitable method mensuration.The volume ratio of employed ethanol and water when this column data of ethanol/water is crystallization.
Embodiment Ethanol/water X 50(μm)
1 1/0.65 26.57
2 1/0.55 33.79
3 1/0.6 35.25
4 1/0.7 21.82
5 1/0.4 37.02
6 1/0.8 20.83
The result: by the method for describing among the WO 98/09982 obtain 16, the 17-[(cyclohexylmethylene) two (oxygen)]-11-hydroxyl-21-(2-methyl isophthalic acid-oxopropoxy) pregnant steroid-1,4-diene-3,20-diketone [11 β, 16 α (R, S)] has obviously higher X 50Value.These values are not at the X of the particle diameter that be fit to suck 50Within the value scope.
4. Prepare initiated I compound by acylation
A: 16, the 17-[(cyclohexylmethylene) two (oxygen)]-the pregnant steroid of 11-hydroxyl-21-(2-methyl isophthalic acid-oxopropoxy)- 1,4-diene-3, the 20-diketone [11 β, 16 α (R, S)]
With 16 of 10g, the 17-[(cyclohexylmethylene) two (oxygen)] 11,21-dimonohydric pregnant-1,4-diene-3,20-diketone [11 β, 16 α (R, S)] and 6g salt of wormwood be suspended in the 50ml acetone, and under agitation add the 4.4ml isobutyric anhydride, and this mixture is heated 2.5h under refluxing.After being cooled to RT, in this suspension, add 100ml water lentamente.With the product filtered off with suction, wash with water and drying.The enrichment of R epimer is undertaken by as above method.
The productive rate of crude product: 11.4g (be theoretical yield 99.3%) 16, the 17-[(cyclohexylmethylene) two (oxygen)]-11-hydroxyl-21-(2-methyl isophthalic acid-oxopropoxy) pregnant steroid-1,4-diene-3, the 20-diketone [11 β, 16 α (R, S)]
The mensuration of the epimer ratio of formula I compound
The epimer ratio is measured by HPLC.
The HPLC condition:
Column material: Hypersil C18,5 μ m, 125 * 4.6mm
Detector wavelength: 242nm
Sample concentration: 0.5-1.5mg/ml
Loaded volume: 20 μ l
Flow velocity: 1ml/min
Oven temperature: 20 ℃
Compd A: elutriant water (45%)/ethanol (55%)

Claims (19)

1. preparation is without further micronization step is available, and particle diameter is characterised in that X 50In the formula I compound of the crystallized form of 1.8 to 2.0 mu m ranges, 16,17-[(cyclohexylmethylene) two (oxygen)]-11-hydroxyl-21-(2-methyl isophthalic acid-oxopropoxy) pregnant steroid-1,4-diene-3, the method for 20-diketone [11 β, 16 α (R, S)],
Figure C2004800074810002C1
Formula I
This method may further comprise the steps:
But a) solution of preparation I compound in suitable water compatibility organic solvent;
B) solution that obtains in adding a) of Xiang Shuizhong and
C) separate the formula I compound precipitation that forms.
2. according to the method for claim 1, but it is characterized in that suitable water compatibility organic solvent is an alcohol.
3. according to the method for claim 2, it is characterized in that described alcohol is selected from methyl alcohol, ethanol, n-propyl alcohol and Virahol or its mixture with any mixed.
4. according to the method for claim 3, wherein said alcohol is ethanol.
5. according to the method for claim 1, but it is characterized in that water compatibility organic solvent is selected from acetone, tetrahydrofuran (THF) or dimethyl formamide.
6. according to the method for claim 1, but the temperature that it is characterized in that suitable water compatibility organic solvent at 15 ℃ to scopes than low 10 ℃ of this solvent boiling point.
7. according to the method for claim 6, but the room temperature when it is characterized in that the temperature of suitable water compatibility organic solvent and this method are carried out is corresponding.
8. according to the method for claim 1, the temperature that it is characterized in that water is at 10 ℃ to 50 ℃.
9. according to the method for claim 7, the room temperature of its feature when the temperature of water and this method are carried out is corresponding.
10. according to the method for claim 1, it is characterized in that the ratio of R epimer in the formula I compound is at least 90%.
11. according to the method for claim 10, the ratio that it is characterized in that R epimer in the formula I compound is greater than 95%.
12., it is characterized in that formula I compound is the ring shrinkage porosite according to the method for claim 1.
13., it is characterized in that the precipitation that will obtain after the step c) carries out drying subsequently according to the method for claim 1.
14. preparation is without further micronization step is available, particle diameter is characterised in that X 50In the method according to the formula I compound of claim 1 of the crystallized form of 1.8 to 2.0 mu m ranges, this method may further comprise the steps:
A) come that with suitable acylating reagent formula II compound is carried out acylation and come preparation I compound;
Figure C2004800074810003C1
Formula II
B) but but add the method for entry or the method by the suspension of heating-type I compound in the mixture of suitable water compatibility organic solvent and water in the solution by the formula I compound in being dissolved in suitable water compatibility organic solvent the formula I compound that obtains in a) carried out crystallization;
C) from water/solvent mixture, remove the precipitation of the R epimer-enriched of the formula I compound that obtains;
D) repeating step b if desired);
E) but preparation at the solution of compound in suitable water compatibility organic solvent that step c) obtains;
F) Xiang Shuizhong adds e) in the solution that obtains and
G) separate the formula I compound precipitation that forms.
15., wherein step b) and e according to the method for claim 14) in employed organic solvent be identical solvent.
16. have the X of being characterized as 50The crystallization ring shrinkage porosite of the particle diameter of 1.8 to 2.0 mu m ranges, this ring shrinkage porosite is not the micronization form.
17. comprise the pharmaceutical composition according to the compound of claim 16, wherein said compound is to exist with the form of pharmaceutically acceptable vehicle with solia particle.
18. according to the pharmaceutical composition of claim 17, it is the aqeous suspension of this compound.
19. according to the pharmaceutical composition of claim 17, it is a dry powder.
CNB2004800074813A 2003-03-27 2004-03-26 Process for preparing crystalline ciclesonide with defined particle size Expired - Lifetime CN100404545C (en)

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CN106692115A (en) * 2015-11-13 2017-05-24 天津金耀集团有限公司 Ciclesonide suspension nasal spray composition
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US5482934A (en) * 1990-09-07 1996-01-09 Especialidades Latinas Medicamentos Universales, S.A. (Elmu, S.A.) Pregna-1,4-diene3,20-dione-16-17-acetal-21 esters, process for their preparation, composition, and methods for the treatment of inflammatory conditions
CN1335787A (en) * 1998-12-24 2002-02-13 葛兰素集团有限公司 Apparatus and process for preparing crystalline particles
WO2002038584A1 (en) * 2000-11-10 2002-05-16 Altana Pharma Ag Process for the production of 16,17-[(cyclohexylmethylen)bis(oxy)]-11,21-dihydroxy-pregna-1,4-dien-3,20-dion or its 21-isobutyrat by transketalisation

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US4605517A (en) * 1983-10-29 1986-08-12 Sterling Drug Inc. Method of preparing steroid compounds of controlled particle size
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CN1335787A (en) * 1998-12-24 2002-02-13 葛兰素集团有限公司 Apparatus and process for preparing crystalline particles
WO2002038584A1 (en) * 2000-11-10 2002-05-16 Altana Pharma Ag Process for the production of 16,17-[(cyclohexylmethylen)bis(oxy)]-11,21-dihydroxy-pregna-1,4-dien-3,20-dion or its 21-isobutyrat by transketalisation

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