CN102292084A - 包含氨氯地平和氯沙坦的固体药物组合物 - Google Patents

包含氨氯地平和氯沙坦的固体药物组合物 Download PDF

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CN102292084A
CN102292084A CN200980155067XA CN200980155067A CN102292084A CN 102292084 A CN102292084 A CN 102292084A CN 200980155067X A CN200980155067X A CN 200980155067XA CN 200980155067 A CN200980155067 A CN 200980155067A CN 102292084 A CN102292084 A CN 102292084A
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禹钟守
朴宰贤
金用镒
金京洙
林昊泽
任芝贤
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Abstract

本发明涉及用于预防或治疗心血管疾病的固体药物组合物,其包含作为活性成分的氨氯地平和氯沙坦以及作为选自羟基乙酸淀粉钠、交联羧甲基纤维素钠和交聚维酮的至少两种组分的混合物的崩解剂,所述组合物表现出高且稳定的氨氯地平和氯沙坦溶出速率水平。

Description

包含氨氯地平和氯沙坦的固体药物组合物
技术领域
本发明涉及用于预防或治疗心血管疾病的包含氨氯地平和氯沙坦的固体药物组合物,其甚至在低pH条件下也能够维持高且稳定的氨氯地平和氯沙坦溶出速率水平。
背景技术
在高血压的治疗中,为了降低并发症例如冠心病和诸如中风、心力衰竭和心肌梗塞的心血管疾病的风险,将血压持续保持在正常范围内比简单地降低血压本身更重要。因此,要求抗高血压药剂对高血压的长期治疗有效。另外,使用具有不同药理学作用的两种或多种药物的联合的高级疗法使得有可能提高预防或治疗效力,同时降低由长期给药单一药物引起的副作用。
重要的抗高血压药物包括利尿剂、交感神经阻滞剂和血管扩张剂。血管扩张剂是被最广泛地处方的抗高血压药物,并且根据它们的药理学作用可以分为几类,包括ACE(血管紧张素转化酶)抑制剂、血管紧张素II受体拮抗剂和钙通道阻断剂。
氨氯地平是3-乙基-5-甲基-2-(2-氨基乙氧基甲基)-4-(2-氯苯基)-6-甲基-1,4-二氢-3,5-吡啶二羧酸酯的通用名。目前以Novasc(商标)销售氨氯地平苯磺酸。氨氯地平是长效钙通道阻断剂,其可用于治疗心血管疾病例如心绞痛、高血压和充血性心力衰竭。
氯沙坦是2-丁基-4-氯-1-[[2′-(1H-四唑-5-基)[1,1′-联苯基]-4-基]甲基]-1H-咪唑-5-甲醇的通用名,其公开于美国专利5,608,075、5,138,069和5,153,197。氯沙坦钾可作为Cozaar(商标)商购得到。氯沙坦阻断血管紧张素II和其受体的相互作用,并且主要用于治疗高血压、心力衰竭、缺血性外周循环障碍、心肌缺血(心绞痛)、糖尿病神经病变以及青光眼,并且还用于预防心肌梗塞后心力衰竭的进展。
本发明人已发现包含具有不同药理学活性的氨氯地平和氯沙坦的组合制剂可用于治疗高血压,并且已对此类组合制剂进行了大量研究。
然而,当通过简单混合氨氯地平和氯沙坦来制备这两种药物的组合制剂时,发生不利的氯沙坦凝胶化:氯沙坦易溶于纯化水且在相对高的pH(例如pH 6.8)下容易地释放,但是其在低pH(例如pH 2.0或pH 1.2)下由于所述凝胶化而释放非常缓慢。在使用Cozaar(商标)这种可商购的氯沙坦制剂的情况下,在1.2-2.0的pH下,在最初的30分钟内释放的氯沙坦的量低于30%。在此类氨氯地平和氯沙坦的组合制剂中,氨氯地平还可能被封锁在氯沙坦凝胶内。
口服给药制剂通常在具有低pH的胃中崩解并溶出,因此,制剂中的活性成分在低pH下的低溶出速率导致其生物利用度的显著降低。
另外,鉴于健康成人的胃的pH在1.0-3.5的范围内大幅变化并且摄入食物后氯沙坦的Cmax降低约10%,所以需要开发在胃pH变化范围内能够保持相对恒定的溶出速率的此类氨氯地平-氯沙坦组合制剂。
发明内容
因此,本发明的目的在于提供包含氨氯地平和氯沙坦的固体药物组合物,其随pH变化表现出活性成分溶出速率的最小波动,即,甚至在低pH条件下也表现出高且稳定的氨氯地平和氯沙坦溶出速率水平。
根据本发明的一方面,提供了用于预防或治疗心血管疾病的固体药物组合物,其包含作为活性成分的氨氯地平和氯沙坦以及作为选自羟基乙酸淀粉钠、交联羧甲基纤维素钠和交聚维酮的至少两种组分的混合物的崩解剂。
附图简述
当与附图结合在一起时,从下文本发明的描述会显而易见本发明的上述和其他的目的以及特征,所述附图显示:
图1和2:分别观察到的实施例3和4以及比较例1和5制备的片剂以及Cozaar片剂(商标)在人工胃液(pH1.2)和0.01N HCl(pH 2.0)中的氯沙坦溶出速率(试验例2)。
发明详述
包含氨氯地平和氯沙坦活性成分以及选自羟基乙酸淀粉钠、交联羧甲基纤维素钠和交聚维酮的至少两种特定崩解剂的本发明固体药物组合物在宽pH范围内表现出高氨氯地平和氯沙坦溶出速率,同时在制剂时表现出足够的结构强度。
用于本发明的氯沙坦可以是各种形式的药学可接受的盐之一。在一个实施方案中,所述氯沙坦的药学可接受的盐是氯沙坦钾。
在一个实施方案中,以单位制剂(固体给药形式)计,常规以约10-约500mg的量使用氯沙坦钾。在另一实施方案中,以约25-约250mg的量常规使用氯沙坦钾。在另一实施方案中,以约50-约200mg的量常规使用氯沙坦钾。在另一实施方案中,以约50-约100mg的量常规使用氯沙坦钾。
用于本发明的氨氯地平可以是各种形式的药学可接受的盐之一。所述氨氯地平的药学可接受的盐包括但不限于盐酸盐、氢溴酸盐、硫酸盐、磷酸盐、乙酸盐、马来酸盐、富马酸盐、乳酸盐、酒石酸盐、柠檬酸盐、葡糖酸盐、苯磺酸盐以及樟脑磺酸盐。在一个实施方案中,所述氨氯地平的药学可接受的盐是氨氯地平苯磺酸盐或氨氯地平樟脑磺酸盐。而且,用于本发明的氨氯地平可以是外消旋氨氯地平或S-氨氯地平。
在一个实施方案中,以单位制剂(固体给药形式)计,以约1.25-约20mg的量常规使用氨氯地平。在另一实施方案中,以约1.875-约15mg的量常规使用氨氯地平。在另一实施方案中,以约2.5-约10mg的量常规使用氨氯地平。在另一实施方案中,以约5-约10mg的量常规使用氨氯地平。氨氯地平的处方量表示存在于对应的固体给药形式中的游离氨氯地平的量。
本发明的组合物包含适合期望的氨氯地平-氯沙坦组合固体给药制剂的药学可接受的添加剂,特别是关键性地包含特定的崩解剂。在这一方面,本发明人已发现氨氯地平和氯沙坦的溶出速率显著取决于所使用的崩解剂的种类和量,特别是在低pH下。因此,本发明提供具有特定种类和量的崩解剂的固体药物组合物,其能够表现出优化的溶出速率。
能够是加速固体组合物在消化液中的崩解,由此增加其中包含的活性成分的溶出速率的物质被称为“崩解剂”。同时,过量使用崩解剂使固体制剂不具有在其生产、包装、运输或保存过程中维持其形状的高强度。换言之,以合适的量使用合适种类的崩解剂是非常重要的,用以增强固体制剂特别是片剂的溶解度而不引起不利的结构变形。
在一个实施方案中,用于本发明的崩解剂是选自羟基乙酸淀粉钠、交联羧甲基纤维素钠和交聚维酮的至少两种组分的混合物。在另一实施方案中,所述崩解剂是羟基乙酸淀粉钠和交聚维酮的混合物。在另一实施方案中,所述崩解剂是羟基乙酸淀粉钠和交联羧甲基纤维素钠的混合物。在一个实施方案中,以所述组合物的总重计,可以约2.5-约30重量%的量使用所述崩解剂。在另一实施方案中,以所述组合物的总重计,可以约5-约15重量%的量使用所述崩解剂。
本发明人已发现前述三种组分中的两种或更多种组分的组合得到氨氯地平-氯沙坦组合制剂的期望的结构强度和溶出方面。另外,通过上述技术,本发明实现了所述崩解剂总使用量的减少,这引起可压片性(tabletingcapability)提高。当单独使用羟基乙酸淀粉钠、交联羧甲基纤维素钠或交聚维酮时,尽管其量是过量的,也不能有效抑制由于氯沙坦的凝胶化引起的溶出延迟,并且由于不令人满意的压力和高磨损度常常难以制成口服给药形式。
所述药学可接受的添加剂可以包括稀释剂例如微晶纤维素、乳糖、甘露醇、柠檬酸钠、磷酸钙、甘油、淀粉以及它们的混合物。在一个实施方案中,以所述组合物的总重计,可以约15-约90重量%的量使用所述稀释剂。在另一实施方案中,以所述组合物的总重计,可以约30-约70重量%的量使用所述稀释剂。
除所述稀释剂之外,所述药学可接受的添加剂可以包括稳定剂、粘合剂和润滑剂。
在一个实施方案中,用于本发明的稳定剂可以是抗氧化剂。抗氧化剂的使用增强了活性成分的稳定性,防止在混合过程中与其他药学可接受的添加剂发生不利反应,以及防止随着时间的推移热或潮湿引起的变形(deformation),使得所述氨氯地平-氯沙坦组合制剂稳定性显著增加。
用于本发明的抗氧化剂的代表性实例包括丁羟甲苯(BHT)、丁羟茴醚(BHA)、抗坏血酸、抗坏血酸棕榈酸酯(ascorbyl palmitic acid)、乙二胺四乙酸(EDTA)、焦亚硫酸钠以及它们的混合物。在一个实施方案中,所述抗氧化剂是丁羟甲苯。
用于本发明的粘合剂的代表性实例包括羟丙基纤维素(HPC)、羟丙基甲基纤维素(HPMC)、聚乙烯吡咯烷酮、聚乙二醇、硅酸盐衍生物例如硬二氧化硅(hard silica)、合成硅酸铝、硅酸钙和硅酸镁铝(magnesium metasilicatealuminate)、磷酸盐例如磷酸氢钙、碳酸盐例如碳酸钙,以及它们的混合物。
用于本发明的润滑剂的代表性实例包括硬脂酸、硬脂酸金属盐例如硬脂酸钙和硬脂酸镁、滑石、胶体二氧化硅、蔗糖脂肪酸酯、加氢植物油、具有高熔点的蜡、脂肪酸甘油酯、二山萮酸甘油酯以及它们的混合物。
包含所述氨氯地平和氯沙坦的本发明组合物能够提供提高的对心血管疾病的预防或治疗效力,所述心血管疾病是例如心绞痛、高血压、动脉血管痉挛、深静脉、心脏肥大、脑梗塞、充血性心力衰竭以及心肌梗塞。
可以片剂、胶囊剂或多颗粒剂的形式通过各种口服给药途径(包括口腔、口和舌下)给药本发明的组合物。在一个实施方案中,可以将本发明的组合物制成片剂形式并口服给药。通过将组份混合并将它们一起压片可以容易地将本发明的组合物制成所述片剂形式。
在一个实施方案中,从本发明的组合物获得的此类片剂可以具有外包衣层。所述片剂应具有合适的硬度,即,在任选的外包衣层形成之前测量时5kp-30kp的平均硬度。
所述包衣层可由能够形成薄膜包衣的任何一种常规高分子化合物组成。应将所述包衣的量减少至最低以方便给药并提高生产效率,并且它可以是以所述制剂的总重计约1-约10重量%。在另一实施方案中,它可以是以所述制剂的总重计约3-5约重量%。
以下实施例意图进一步举例说明本发明而不限制其范围。
实施例1:制备组合片剂-(I)
-混合部分-
Figure BPA00001406765700061
-润滑剂-
硬脂酸镁           4.0mg
将氯沙坦钾、氨氯地平樟脑磺酸盐、微晶纤维素、甘露醇、羟基乙酸淀粉钠、交聚维酮和聚乙烯吡咯烷酮分别过#20筛并且用V-型混合机混合30min。然后,向其中加入适量的硬脂酸镁(润滑剂),混合5min,使用旋转式压片机(Sejong Pharmatek,MRC-45)以约20kN的压力将所得混合物压片,以制备氯沙坦100mg-氨氯地平5mg组合片剂。
当使用Erweka硬度和磨损测量仪测量(25rpm,100次自由降落)时,由此获得的片剂的平均硬度和磨损度分别是19.7kp和0.1%,这表明该片剂的强度良好。
实施例2:制备组合片剂-(II)
除了使用15mg交联羧甲基纤维素钠代替15mg交聚维酮之外,通过重复实施例1的操作制备组合片剂。由此获得的片剂的平均硬度和磨损度分别是18.5kp和0.0%,这表明该片剂的强度良好。
实施例3:制备组合片剂-(III)
除了使用各25mg的羟基乙酸淀粉钠和交聚维酮之外,通过重复实施例1的操作制备组合片剂。由此获得的片剂的平均硬度和磨损度分别是15.3kp和0.2%,这表明该片剂的强度良好。
实施例4:制备组合片剂-(IV)
除了使用25mg量的羟基乙酸淀粉钠并同时使用25mg交联羧甲基纤维素钠代替15mg交聚维酮之外,通过重复实施例1的操作制备组合片剂。由此获得的片剂的平均硬度和磨损度分别是14.5kp和0.1%,这表明该片剂的强度良好。
实施例5:制备组合片剂-(V)
除了使用25mg量的交聚维酮并同时使用25mg交联羧甲基纤维素钠代替15mg羟基乙酸淀粉钠之外,通过重复实施例1的操作制备组合片剂。由此获得的片剂的平均硬度和磨损度分别是17.1kp和0.1%,这表明该片剂的强度良好。
实施例6:制备组合片剂-(VI)
除了使用各25mg量的羟基乙酸淀粉钠和交聚维酮并同时还使用25mg量的交联羧甲基纤维素钠之外,通过重复实施例1的操作制备组合片剂。由此获得的片剂的平均硬度和磨损度分别是11.7kp和0.3%,这表明该片剂的强度良好。
实施例7:制备组合片剂-(VII)
除了使用各40mg量的羟基乙酸淀粉钠和交聚维酮之外,通过重复实施例1的操作制备组合片剂。由此获得的片剂的平均硬度和磨损度分别是11.2kp和0.2%,这表明该片剂的强度良好。
实施例8:制备组合片剂-(VIII)
除了使用50mg量的氯沙坦钾之外,通过重复实施例1的操作制备氯沙坦50mg-氨氯地平5mg组合片剂。由此获得的片剂的平均硬度和磨损度分别是16.9kp和0.3%,这表明该片剂的强度良好。
比较例1:制备组合片剂-(IX)
-混合部分-
Figure BPA00001406765700081
-润滑剂-
硬脂酸镁           4.0mg
使用上文所示的特定组份通过重复实施例1的操作制备氯沙坦100mg-氨氯地平5mg组合片剂。由此获得的片剂的平均硬度和磨损度分别是14.3kp和0.3%,这表明该片剂的强度良好。
比较例2:制备组合片剂-(X)
除了使用80mg量的羟基乙酸淀粉钠之外,通过重复比较例1的操作制备组合片剂。由此获得的片剂的平均硬度和磨损度分别是4.7kp和1.2%,这表明该片剂的强度不足且较差。
比较例3:制备组合片剂-(XI)
除了使用40mg交联羧甲基纤维素钠代替40mg羟基乙酸淀粉钠之外,通过重复比较例1的操作制备组合片剂。由此获得的片剂的平均硬度和磨损度分别是12.5kp和0.2%,这表明该片剂的强度良好。
比较例4:制备组合片剂-(XII)
除了使用40mg羧甲基纤维素钙代替40mg羟基乙酸淀粉钠之外,通过重复比较例1的操作制备组合片剂。由此获得的片剂的平均硬度和磨损度分别是14.9kp和0.2%,这表明该片剂的强度良好。
比较例5:制备组合片剂-(XIII)
除了使用25mg羧甲基纤维素钙和25mg玉米淀粉的混合物代替40mg羟基乙酸淀粉钠之外,通过重复比较例1的操作制备组合片剂。由此获得的片剂的平均硬度和磨损度分别是15.3kp和0.1%,这表明该片剂的强度良好。
下文中,表1示出了实施例1-8和比较例1-5获得的制剂的组成和性质(硬度和磨损度)。
表1
Figure BPA00001406765700091
(a)氯沙坦钾
(b)氨氯地平樟脑磺酸盐
(c)羟基乙酸淀粉钠
(d)交聚维酮
(e)交联羧甲基纤维素钠
(f)羧甲基纤维素钙
(g)玉米淀粉
(h)微晶纤维素
(i)甘露醇
(j)聚乙烯吡咯烷酮
(k)硬脂酸镁
试验例1:氨氯地平溶出试验
在下列条件下对在实施例1-8和比较例1-5中获得的氯沙坦-氨氯地平组合片剂进行药物溶出试验。结果显示于表2。
-试验条件-
流出液:900ml人工胃液(pH 1.2)
溶出试验系统:USP桨法,50rpm
温度:37℃
-分析条件-
柱子:填充了用于5μm液相色谱法的十八烷基硅烷化的硅胶的不锈钢柱(内径:4.6mm,长度:15cm)
流动相:甲醇和0.03M磷酸二氢钾的混合物(600∶400,v/v)
检测器:紫外分光光度计(350nm)
流速:1.5ml/min
进样体积:20μl
表2
Figure BPA00001406765700111
①第30min时氨氯地平的溶出速率(%)
②第60min时氨氯地平的溶出速率(%)
如表2所示,实施例1-8获得的组合片剂第30和60分钟时的氨氯地平溶出速率分别为75%或更多和90%或更多,而获自比较例1-5的片剂表现出较低的氨氯地平溶出速率。特别是,尽管比较例2中获得的片剂具有4.7kp的低硬度,但是其第30分钟时的氨氯地平溶出速率未超过60%。
试验例2:氯沙坦溶出度测定
在下列条件下对实施例3和4、比较例1和5获得的组合片剂以及100mg Cozaar片(商标)分别进行药物溶出试验。结果显示于图1和2。
-试验条件-
流出液:900ml人工胃液(pH 1.2)或0.01N HCl(pH 2.0)
溶出试验系统:USP桨法,50rpm
温度:37℃
-分析条件-
柱子:填充了用于5μm液相色谱法的十八烷基硅烷化的硅胶的不锈钢柱(内径:4.6mm,长度:15cm)
流动相:
流动相A-磷酸盐缓冲液∶乙腈(850∶150,v/v)
流动相B-乙腈
浓度梯度系统
  时间(min)   流动相A%   流动相B%
  0   80   20
  10   40   60
  11   80   20
  15   80   20
检测器:紫外分光光度计(250nm)
流速:1.5ml/min
进样体积:10μl
-结果-
上述溶出试验系统(USP桨法,50rpm)最常用于评价口服制剂的药物溶出速率,并且所使用的流出液(人工胃液(pH 1.2)或0.01N HCl(pH2.0))具有与胃肠道相似的pH。
如图1和2所示,在实施例3和4中获得的组合片剂表现出比在比较例1和5中获得的片剂以及单一氯沙坦制剂Cozaar片(商标)更高的氯沙坦溶出速率。
尽管参考上述具体实施方案描述了本发明,但是应理解,本领域技术人员可对本发明进行各种修改和变化,这些修改和变化也落入由所附的权利要求所定义的本发明范围内。

Claims (6)

1.用于预防或治疗心血管疾病的固体药物组合物,其包含作为活性成分的氨氯地平和氯沙坦以及作为选自羟基乙酸淀粉钠、交联羧甲基纤维素钠和交聚维酮的至少两种组分的混合物的崩解剂。
2.权利要求1的组合物,其中所述崩解剂是羟基乙酸淀粉钠和交聚维酮的混合物。
3.权利要求1的组合物,其中所述崩解剂是羟基乙酸淀粉钠和交联羧甲基纤维素钠的混合物。
4.权利要求1的组合物,其中以所述组合物的总重计,以约2.5-约30重量%的量使用所述崩解剂。
5.权利要求4的组合物,其中以所述组合物的总重计,以约5-约15重量%的量使用所述崩解剂。
6.权利要求1的组合物,其中所述心血管疾病选自心绞痛、高血压、动脉血管痉挛、深静脉、心脏肥大、脑梗塞、充血性心力衰竭以及心肌梗塞。
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KR20210074428A (ko) 2019-12-11 2021-06-22 한미약품 주식회사 암로디핀, 로자탄 및 클로르탈리돈을 포함하는 약제학적 복합제제
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