CN115554247A - 一种瑞格列奈颗粒 - Google Patents
一种瑞格列奈颗粒 Download PDFInfo
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Abstract
本发明属于药物技术领域,发明专利名称为“一种瑞格列奈颗粒”,具体涉及一种瑞格列奈颗粒的制备方法。本发明采用的处方组成简单,除主药外仅四种辅料,且处方中的甘露醇选择喷雾干燥甘露醇,此类甘露醇粒径较大,圆整度好,流动性好无需再次制粒。本发明解决了原制备方法溶出速度慢,工艺复杂的问题,与现有制备工艺相比能够显著提高溶出度,改善生物利用度,同时极大低降低了制备难度,适宜于产业化推广。
Description
技术领域
本发明涉及医药制剂技术领域,具体涉及一种瑞格列奈颗粒及其制备方法。
背景技术
糖尿病为威胁人类健康的世界性公共卫生问题,瑞格列奈为甲基甲胺苯甲酸的衍生物, 它可显著提高血液中胰岛素的水平,为治疗Ⅱ型糖尿病的一线口服降糖药。瑞格列奈片最早 由Novo NordiskA/S研制,并于1997年12约在美国上市,现已被我国参比制剂目录收载, 商品名诺和龙,为原研药物。
瑞格列奈易溶于甲醇,二氯甲烷和N,N-二甲基甲酰胺,微溶于乙腈,难溶于水。瑞格 列奈的低溶解性使其难以从制剂释放出来,进而导致体内吸收效果变差,生物利用度低。美 国药典43版中瑞格列奈片的溶出介质pH值为5.0,但瑞格列奈在PH5.0介质中溶解度小 (0.0089mg/ml)、溶出速度慢,在30分钟内瑞格列奈的溶出很难达到标示量的70%。
查阅到原研药物专利CN200780036006.2,其阐述了瑞格列奈片的制备方法,制备工艺为 将瑞格列奈、葡甲胺等辅料溶解于水中,然后喷雾干燥,再与其它辅料进行混合,最后进行 压片。该专利希望通过喷雾干燥工艺改善片剂溶出速度,然而喷雾干燥的参数控制难度大, 生产型喷雾干燥设备国内普及度低,且该设备能耗极大。
专利CN102267959B在超声场下进行析晶,获得一种粒度很小的瑞格列奈晶体以保证片 剂良好的溶出速度,然而此工艺额外增加了原料药的前处理工艺,增加了工艺的复杂性,国 内制剂厂普遍不具备这种原料前处理条件,不利于产业化推广。
上述专利均希望通过一定的方法来改善瑞格列奈的溶解性,提高制剂的溶出速度,然而 上述专利均采用较为复杂且特殊的制备工艺进行制备,不适合产业化推广,且剂型均为片剂, 片剂进行溶出时需先吸水溶胀再崩解成颗粒,然后颗粒进行一步崩解释放主药,增加了溶出 难度。
发明内容
本发明提供一种瑞格列奈颗粒及其制备方法,与当前片剂及制备方法相比能够显著提高 溶出度,同时制备难度低,适宜于产业化推广。
技术方案
1.为显著提高制剂溶出度,本发明采用下述技术方案:
1.1改变制剂的剂型
本发明采用颗粒剂剂型,片剂溶出时需先吸水溶胀再崩解成颗粒,然后颗粒进行一步崩 解释放主药,不利于难溶性药物释放。本发明溶出为颗粒剂,溶出时主药直接从颗粒中释放, 与片剂相比主药释放速度更快。
1.2将主药与辅料一并溶解再干燥
本发明中将瑞格列奈原料与十二烷基硫酸钠、碳酸氢钠溶解于水中后再干燥,与1/3处 方量甘露醇混合、干燥。惊奇的发现此操作能够明显提高制剂的溶出度,如仅将原料分散在 水中,再与1/3处方量甘露醇混合、干燥制得样品溶出度明显低于本发明。
1.3将带药溶液混合在甘露醇中,干燥后微粉
本发明中将瑞格列奈原料与十二烷基硫酸钠、碳酸氢钠溶解于水中后既得带药溶液,再 将此带药溶液与辅料混合、干燥后进行微粉处理,惊奇的发现带药溶液与甘露醇混合、干燥 后再进行微粉处理,此时粉碎得到的物料粒径明显减小,直接对瑞格列奈原料进行微粉时D90 通常为10-25μm,但采用本发明所述共粉碎工艺可将D90控制在3μm以下,较小的粒径能够 提高溶出速度。此步骤甘露醇用量为处方量的1/4至3/4,优选1/3处方量甘露醇。
1.4采用水溶性辅料
本发明处方中辅料均为水溶性辅料,溶出时辅料迅速溶解,主药释放更加完全,有利于 提高溶出度。
2.采用合理的处方工艺,使其更有利于产业化
本发明采用的处方组成简单,除主药外仅四种辅料,且处方中的甘露醇选择喷雾干燥甘 露醇,此类甘露醇粒径较大,圆整度好,流动性好无需再次制粒。整体制备工艺操作简便, 能耗较低,生产效率高,无特殊生产设备,对生产线要求低,适宜于产业化推广。
附图说明
图1瑞格列奈pH5.0溶出对比
具体实施方式
下述实施例用于进一步阐述权利要求的实施方式,不限制本发明内容。
实施例1:瑞格列奈颗粒制备
进行瑞格列奈颗粒制备,处方组成如表1所示
表1:1000片瑞格列奈颗粒处方
制备工艺:
1)将瑞格列奈、十二烷基硫酸钠、碳酸氢钠加入处方量纯化水中搅拌至溶解既得带药溶液;
2)将1/3处方量甘露醇置于湿法制粒机中,开启搅拌、剪切同时喷人上述带药溶液,然后将 其干燥至水分0.5%以下;
3)将上述物料使用气流粉碎机进行粉碎,粉碎后的物料再与剩余2/3甘露醇、硬脂酸镁混合 均匀;
4)将上述物料使用颗粒包装机进行包装;
对比例1:原料仅分散在水中
参照实施例1,不同点为原料仅分散在水中,制备一批样品处方组成如表2所示
表2:1000片瑞格列奈颗粒处方
制备工艺:
1)将瑞格列奈加入处方量纯化水中搅拌至分散均匀,既得药液(原料溶解度差,不能溶解在 水中);
2)将1/3处方量甘露醇置于湿法制粒机中,开启搅拌、剪切同时喷人上述药液,然后将其干 燥至水分0.5%以下;
3)将上述物料使用气流粉碎机进行粉碎,粉碎后的物料再与十二烷基硫酸钠、碳酸氢钠、剩 余2/3甘露醇、硬脂酸镁混合均匀;
4)将上述物料使用颗粒包装机进行包装;
对比例2:原料单独粉碎
参照实施例1,不同点为原料为单独粉碎,制备一批样品处方组成如表2所示
表3:1000片瑞格列奈颗粒处方
制备工艺:
1)将瑞格列奈使用气流粉碎机进行粉碎,
2)粉碎后的物料再与十二烷基硫酸钠、碳酸氢钠、甘露醇、硬脂酸镁混合均匀;
3)将上述物料使用颗粒包装机进行包装;
对比例3:原料不与甘露醇共粉碎
参照实施例1,不同点为原料与十二烷基硫酸钠、碳酸氢钠溶解于水中再干燥后,直接粉 碎制备一批样品处方组成如表3所示
表4:1000片瑞格列奈颗粒处方
制备工艺:
1)将瑞格列奈、十二烷基硫酸钠、碳酸氢钠加入处方量纯化水中搅拌至溶解既得带药溶液;
2)将带药溶液蒸干,至水分0.5%以下;
3)将上述物料使用气流粉碎机进行粉碎,粉碎后的物料再与剩余2/3甘露醇、硬脂酸镁混合 均匀;
4)将上述物料使用颗粒包装机进行包装;
实施例2:测定实施例1,对比1、2、3气流粉碎后物料粒径
采用马尔文激光粒度仪对上述实施例1,对比例2、3气流粉碎后物料进行粒径测定,测 定方法如下:进样量0.3-0.5g,料斗间隙1.5mm,进样速度50%,分散气压2.5bar,测定时间10s,测定三次,计算平均值,三批样品粒度测定结果如表5所示。
表5实施例1,对比例1、2、3气流粉碎后物料粒径测定结果
粒径 | 实施例1 | 对比例1 | 对比例2 | 对比例3 |
D90 | 2.17μm | 6.22μm | 12.74μm | 22.38μm |
通过上述对比可知,采用实施例1及对比例1所述方法可明显降低原料粉碎的的粒径, 说明原料与甘露醇共粉碎能够明显降低物料粒径。
实施例3:测定实施例1,对比例1、2、3以及原研药物诺和龙的溶出度
美国药典43版中瑞格列奈片的溶出方法采用溶出度测定法(第二法,桨法):取瑞格列奈 片,以900mlpH5.0缓冲溶液为溶出介质,转速为每分钟75转,经30分钟时取溶液10ml, 所取样品立即滤过,取续滤液注入液相色谱仪测定。限度要求不低于标示量的70%(Q)。
瑞格列奈在pH5.0缓冲液介质饱和溶解度较低,制剂样品溶出特性的差异可以在此介质 中显示出来,故参考美国药典,对实施例1,对比例1、2、3以及原研药物诺和龙进行溶出 测定,测定方法如下:
溶出仪:天津市天大天发科技有限公司RC12AD;
溶出介质:pH5.0柠檬酸盐缓冲液,900ml;
色谱柱:Nucleosil 10C18,4.0mmx125mm,10μm;
溶出介质温度:37℃;
方法2(桨法):75rpm;
时间:5、10、15、20、30、45、60min;
限度:NLT70%(Q)
测定结果如表6所示
表6各批样品pH5.0缓冲液介质溶出测定结果
时间min | 实施例1 | 对比例1 | 对比例2 | 对比例3 | 诺和龙 |
5 | 77 | 18 | 13 | 56 | 50 |
10 | 86 | 24 | 17 | 60 | 58 |
15 | 94 | 33 | 25 | 64 | 66 |
30 | 95 | 45 | 37 | 71 | 76 |
45 | 97 | 51 | 44 | 73 | 80 |
60 | 97 | 57 | 49 | 73 | 86 |
通过上述对比可知:
1、对比例2溶出最慢,说明如仅对原料进行粉碎,促进溶出的效果不明显;
2、对比例1溶出快于对比例2,结合实施例2粒径检测结果,说明原料与甘露醇共粉碎 能够降低物料粒径,进而改善溶出;
3、对比例3溶出快于对比例1,说明将瑞格列奈原料与十二烷基硫酸钠、碳酸氢钠溶解 于水中后再干燥,此工艺能够明显提高制剂溶出度;
4、本发明所示实施例1制得样品溶出明显优于对比例1、2、3及原研药诺和龙,说明采 用本发明所述处方工艺能够明显提高制剂溶出度。
综上,本发明所述处方工艺够显著提高溶出度,同时制备难度低,适宜于产业化推广。
Claims (8)
1.一种瑞格列奈颗粒,其特征在于,处方由瑞格列奈原料药、十二烷基硫酸钠、碳酸氢钠、甘露醇、硬脂酸镁组成,其制备时将瑞格列奈原料与十二烷基硫酸钠、碳酸氢钠溶解于水中后,与1/3处方量甘露醇混合、干燥,然后将其微粉,再与剩余甘露醇、硬脂酸镁混合既得。
2.根据权利要求1所述的一种瑞格列奈颗粒,其特征在于瑞格列奈原料药与十二烷基硫酸钠质量比在1:0.5至1:5之间。
3.根据权利要求1所述的一种瑞格列奈颗粒,其特征在于瑞格列奈原料药与碳酸氢钠质量比在1:0.05至1:0.5之间。
4.根据权利要求1所述的一种瑞格列奈颗粒,其特征在于瑞格列奈原料药与甘露醇质量比在1:95至1:99之间,所述甘露醇为喷雾干燥甘露醇,具有良好的流动性。
5.根据权利要求1所述的一种瑞格列奈颗粒,其特征在于瑞格列奈原料药与甘露醇质量比在1:0.05至1:0.5之间。
6.根据权利要求1所述的一种瑞格列奈颗粒,其特征在于瑞格列奈原料药与十二烷基硫酸钠、碳酸氢钠溶解于水中,瑞格列奈原料药与水的质量比在1:5-1:50之间。
7.根据权利要求1所述的一种瑞格列奈颗粒,其特征在于瑞格列奈原料与十二烷基硫酸钠、碳酸氢钠溶解于水中后,与1/3处方量甘露醇混合、干燥,然后将其微粉,微粉后物料粒径D90不大于3μm。
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CN114681404A (zh) * | 2020-12-25 | 2022-07-01 | 北京新领先医药科技发展有限公司 | 一种瑞格列奈颗粒剂药物组合物及其制备方法 |
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CN114681404A (zh) * | 2020-12-25 | 2022-07-01 | 北京新领先医药科技发展有限公司 | 一种瑞格列奈颗粒剂药物组合物及其制备方法 |
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