CN103570610B - 一种罗氟司特微粒的制备方法 - Google Patents
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- MNDBXUUTURYVHR-UHFFFAOYSA-N roflumilast Chemical compound FC(F)OC1=CC=C(C(=O)NC=2C(=CN=CC=2Cl)Cl)C=C1OCC1CC1 MNDBXUUTURYVHR-UHFFFAOYSA-N 0.000 title claims abstract description 53
- 229960002586 roflumilast Drugs 0.000 title claims abstract description 53
- 239000002245 particle Substances 0.000 title claims abstract description 32
- 238000002360 preparation method Methods 0.000 title description 9
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 27
- 238000000034 method Methods 0.000 claims abstract description 26
- 150000002576 ketones Chemical class 0.000 claims abstract description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000012046 mixed solvent Substances 0.000 claims abstract description 10
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical group CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 14
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims description 9
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 9
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 claims description 8
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 claims description 4
- NTIZESTWPVYFNL-UHFFFAOYSA-N Methyl isobutyl ketone Chemical compound CC(C)CC(C)=O NTIZESTWPVYFNL-UHFFFAOYSA-N 0.000 claims description 3
- UIHCLUNTQKBZGK-UHFFFAOYSA-N Methyl isobutyl ketone Natural products CCC(C)C(C)=O UIHCLUNTQKBZGK-UHFFFAOYSA-N 0.000 claims description 3
- NGAZZOYFWWSOGK-UHFFFAOYSA-N heptan-3-one Chemical compound CCCCC(=O)CC NGAZZOYFWWSOGK-UHFFFAOYSA-N 0.000 claims description 3
- MSXVEPNJUHWQHW-UHFFFAOYSA-N 2-methylbutan-2-ol Chemical compound CCC(C)(C)O MSXVEPNJUHWQHW-UHFFFAOYSA-N 0.000 claims 2
- MVLRILUUXLBENA-UHFFFAOYSA-N rac-4-methyl-3-heptanone Natural products CCCC(C)C(=O)CC MVLRILUUXLBENA-UHFFFAOYSA-N 0.000 claims 1
- 239000002904 solvent Substances 0.000 abstract description 5
- 239000000428 dust Substances 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000011109 contamination Methods 0.000 abstract description 2
- 238000007796 conventional method Methods 0.000 abstract description 2
- 239000000725 suspension Substances 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000002425 crystallisation Methods 0.000 description 3
- 230000008025 crystallization Effects 0.000 description 3
- 239000003814 drug Substances 0.000 description 3
- 229910052731 fluorine Inorganic materials 0.000 description 3
- 239000011737 fluorine Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 229940079593 drug Drugs 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000000227 grinding Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 229940043265 methyl isobutyl ketone Drugs 0.000 description 2
- 238000012805 post-processing Methods 0.000 description 2
- MSYGAHOHLUJIKV-UHFFFAOYSA-N 3,5-dimethyl-1-(3-nitrophenyl)-1h-pyrazole-4-carboxylic acid ethyl ester Chemical compound CC1=C(C(=O)OCC)C(C)=NN1C1=CC=CC([N+]([O-])=O)=C1 MSYGAHOHLUJIKV-UHFFFAOYSA-N 0.000 description 1
- 208000006545 Chronic Obstructive Pulmonary Disease Diseases 0.000 description 1
- 101100296720 Dictyostelium discoideum Pde4 gene Proteins 0.000 description 1
- 101100082610 Plasmodium falciparum (isolate 3D7) PDEdelta gene Proteins 0.000 description 1
- 102000011017 Type 4 Cyclic Nucleotide Phosphodiesterases Human genes 0.000 description 1
- 108010037584 Type 4 Cyclic Nucleotide Phosphodiesterases Proteins 0.000 description 1
- 240000008042 Zea mays Species 0.000 description 1
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 description 1
- 235000002017 Zea mays subsp mays Nutrition 0.000 description 1
- 230000001476 alcoholic effect Effects 0.000 description 1
- 238000000149 argon plasma sintering Methods 0.000 description 1
- 238000005352 clarification Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 235000005822 corn Nutrition 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 150000002191 fatty alcohols Chemical class 0.000 description 1
- 235000021050 feed intake Nutrition 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000002674 ointment Substances 0.000 description 1
- 238000003921 particle size analysis Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000001953 recrystallisation Methods 0.000 description 1
- 229910052711 selenium Inorganic materials 0.000 description 1
- 239000011669 selenium Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D213/00—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members
- C07D213/02—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members
- C07D213/04—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom
- C07D213/60—Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom 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 ring carbon atoms
- C07D213/72—Nitrogen atoms
- C07D213/76—Nitrogen atoms to which a second hetero atom is attached
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Abstract
一种制备罗氟司特微粒的方法,将罗氟司特溶解于酮和醇的混合溶剂中制成溶液,再采用“反向加入”的方式将该溶液加入水中,得到所需粒度的罗氟司特微粒。与传统方法相比收率更高,可达到90%以上。生产成本低,用常规设备可以达到发明目的。使用无污染的溶剂,不对环境造成污染;避免了机械研磨时粉尘、噪音污染。
Description
技术领域
本发明涉及一种制备罗氟司特微粒的方法,特别是制备D90小于10μm的微粒的方法。
发明背景
罗氟司特(roflumilast)是一种治疗慢性阻塞性肺病(COPD)等症的固体药物,属于磷酸二酯酶4(PDE4)抑制剂。
罗氟司特几乎不溶于水,属于低溶解高吸收的物质。要使罗氟司特被人体有效吸收,就必须提高其在制剂中的释放度。而粒度又是影响释放的关键因素。因此,将罗氟司特制备成制剂时,控制活性成分罗氟司特的粒度十分关键。比如CN1655823A公开的罗氟司特软膏,要求所用的罗氟司特原料粒度D90小于10μm,但该文献没有公开如何得到该粒度的罗氟司特微粒。
现有技术中将罗氟司特制成微粒是采用机械粉碎的方法。如CN101106975A的方法,是采用强剪切混合、球墨、气流粉碎、高压均质机研磨等机械粉碎手段,得到D90小于10μm的罗氟司特微粒。
机械粉碎手段对于药物的工业生产存在很大的问题,一是要依赖于昂贵的粉碎设备,如球磨机,成本较高;另外,罗氟司特是价格较高的成品药物,粉碎过程中会有较大的损失,收率较低;而且,粉碎过程不可避免地产生大量粉尘,污染环境。
因此,需要一种更为经济、简便、环保的制备罗氟司特微粒的方法。
发明内容:
本发明的目的是针对现有技术的不足,提供一种经济、简便、环保的制备罗氟司特微粒的方法。
发明人放弃了传统的机械研磨方法,采用将罗氟司特制成溶液后再析出的方法。并通过反复研究溶剂和析出条件,得到了粒度适宜的罗氟司特微粒,达到了本发明的目的。具体的技术方案是:
一种制备罗氟司特微粒的方法,将罗氟司特溶解于酮和醇的混合溶剂中制成溶液,再采用反向加入的方式将该溶液加入水中,使罗氟司特以固体形式析出,得到所需粒度的罗氟司特微粒。
本发明人实验中发现,影响罗氟司特微粒粒度的因素主要有以下几个方面:
1、混合溶剂中酮与醇的比例:
与一般的重结晶方法不同,本方法中采用的是酮与醇的混合体系作为溶剂。罗氟司特在酮与醇中具有不同的溶剂性能,另外,酮与醇混合后对罗氟司特的析出有较大影响。通常来说,醇的占比越小,罗氟司特微粒的粒度越大,醇占比过大,则收率较小。因此,当要得到特定粒度的产物时,需要对酮与醇的比例进行具体化。
2、混合溶剂与水的比例:水的作用是进一步降低体系中罗氟司特的溶解度并使其析出。因此,通常情况下,水的量越大,罗氟司特微粒的粒度越小。
3、析晶时,采取“反向加入”方式,将罗氟司特的酮和醇溶液加入水中,而不是将水加入溶液中。
此外,操作中混合溶剂用量:混合溶剂只需要能够完全溶解罗氟司特即可,本领域技术人员可以根据实际情况合理选择其用量。
本发明通过多种条件的实验,得到了所需要的特定粒度的罗氟司特微粒,具体方案是:
一种制备罗氟司特微粒的方法,所述罗氟司特微粒的D90小于10μm,具体操作步骤为:
1)将罗氟司特溶解于酮和醇的混合溶剂中制成溶液,所述酮是碳原子数小于8的直链或支链酮的一种或两种;所述醇是碳原子数小于6的直链或支链脂肪醇的一种或两种;所述酮与所述醇的体积比是1∶1~20。
2)将1)中制得的溶液加入水中,析出粒度D90小于10μm的罗氟司特微粒。
优选地,所述酮选自丙酮、丁酮或甲基异丁基酮、丁酮+丙酮、3-庚酮+丁酮,所述醇选自甲醇、乙醇、异丙醇、正丁醇、甲醇+乙醇;
更优选,所述酮是丙酮;所述醇是异丙醇。
优选地,水的用量为上述1)中混合溶剂用量的1~8倍体积。
上述步骤2)中,所需粒度的罗氟司特微粒析出后,酮、醇和水的体系与罗氟司特微粒一起形成混悬液,可以采用过滤,干燥等后处理,得到罗氟司特固体微粒,用于制备固体制剂或贮存;
也可以不进行后处理,用该混悬液直接制备罗氟司特制剂。如制备液体或半固体制剂,可以将该混悬液直接投料。
本发明的技术效果是:
1、得到所需粒度的产品
通过调节析晶条件,可以得到D90小于10μm的罗氟司特微粒。
2、收率高
本方法与传统方法相比收率更高,可达到90%以上。
3、生产成本低
无需购买球磨机等特殊设备,用常规设备可以达到发明目的。
4、环保
使用无污染的溶剂,不对环境造成污染;
避免了机械研磨时粉尘飞扬、噪音污染以及空气中微小颗粒的增多。
附图说明
图1为实施例1所得产物罗氟司特微粒的粒度分布图。
具体实施方式
下面通过实施例的方法对本发明的技术方案进行具体说明,但实施例本身并不构成对发明技术方案的限制。
以下各实施例成品粒度的检测中:所用方法为《中国药典》2010版二部附录IX E粒度和粒度分布测定法中的第三法(光散射法),所用仪器为OMEC LS-POP(III)激光粒度分析仪。
实施例1罗氟司特微粒的制备
将10g罗氟司特、78mL丙酮和622mL异丙醇加入到反应瓶中,搅拌溶清。在另一反应瓶中加入2100mL水,开启搅拌,向该反应瓶中加入罗氟司特溶液,加毕,放置析晶,得到含罗氟司特微粒的混悬液,测定混悬液中罗氟司特的粒度,D90为5.7μm(见图1)。过滤,干燥,得9.65g罗氟司特微粒,收率96.5%。
实施例2~5及对比例罗氟司特微粒的制备
按照实施例1的方法和表1中各物料用量和工艺条件,制备罗氟司特微粒,所得产物罗氟司特微粒的收率和粒度见表1。
表1实施例1~6中物料用量、工艺条件、产物收率和粒度
Claims (2)
1.一种制备粒度D90小于10μm的罗氟司特微粒的方法,其特征为按如下步骤操作:
1)将罗氟司特溶解于酮和醇的混合溶剂中,制成溶液;
2)采用反向加入的方式将1)所得溶液加入水中,析出所需粒度的罗氟司特微粒;
所述酮选自丙酮、丁酮、4-甲基戊酮或3-庚酮;
所述醇选自甲醇、乙醇、异丙醇、正丁醇、叔戊醇;
所述酮与所述醇的体积比是1∶1~20;
水的用量是所述混合溶剂体积的1~8倍。
2.权利要求1所述的方法,所述酮是丙酮;所述醇是异丙醇。
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EP2948148B1 (en) * | 2013-01-28 | 2020-07-29 | Incozen Therapeutics Pvt. Ltd. | Methods of treating autoimmune, respiratory and inflammatory disorders by inhalation of roflumilast n-oxide |
CN105503849B (zh) * | 2014-09-26 | 2019-10-08 | 重庆华邦胜凯制药有限公司 | 一种制备小粒度利伐沙班原料药的方法 |
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CN1655782A (zh) * | 2002-05-28 | 2005-08-17 | 奥坦纳医药公司 | 治疗眼部疾病的罗氟司特的眼科应用 |
CN101106975A (zh) * | 2004-11-23 | 2008-01-16 | 维克特拉有限公司 | 包含用抗粘添加剂进行表面修饰的颗粒的干粉吸入制剂 |
CN100471840C (zh) * | 2003-03-10 | 2009-03-25 | 尼科梅德有限责任公司 | 制备罗氟司特的方法 |
CN102311382A (zh) * | 2010-06-29 | 2012-01-11 | 大道隆达(北京)医药科技发展有限公司 | 罗氟司特的新晶态及其制备方法 |
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CN1655782A (zh) * | 2002-05-28 | 2005-08-17 | 奥坦纳医药公司 | 治疗眼部疾病的罗氟司特的眼科应用 |
CN100471840C (zh) * | 2003-03-10 | 2009-03-25 | 尼科梅德有限责任公司 | 制备罗氟司特的方法 |
CN101106975A (zh) * | 2004-11-23 | 2008-01-16 | 维克特拉有限公司 | 包含用抗粘添加剂进行表面修饰的颗粒的干粉吸入制剂 |
CN102311382A (zh) * | 2010-06-29 | 2012-01-11 | 大道隆达(北京)医药科技发展有限公司 | 罗氟司特的新晶态及其制备方法 |
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