TWI270550B - Macrolides - Google Patents
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- TWI270550B TWI270550B TW094104943A TW94104943A TWI270550B TW I270550 B TWI270550 B TW I270550B TW 094104943 A TW094104943 A TW 094104943A TW 94104943 A TW94104943 A TW 94104943A TW I270550 B TWI270550 B TW I270550B
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- 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
- A61K31/436—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 containing a six-membered ring having oxygen as a ring hetero atom, e.g. rapamycin
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- A—HUMAN NECESSITIES
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- C07D498/12—Heterocyclic compounds containing in the condensed system at least one hetero ring having nitrogen and oxygen atoms as the only ring hetero atoms in which the condensed system contains three hetero rings
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Description
1270550 九、發明說明: 【發明所屬之技術領域】 —本發明係、關於—種對氧化作用敏感之醫藥活性成份之安 疋::例士口 :聚烯大環内酯’較佳為具有免疫抑制劑性質 r 袁内酉曰’特別是雷帕黴素(raPamycins)。 【先刖技術】
聚烯大環内酯具有令人滿意的安定性質。 現可藉由在其分離步驟中添加安定劑,例如 實質上改善其對氧之安定性。 【發明内容】 料化作用㈣之„活性成份,特収散裝型式之處 ^藏有困難。此等對氧化作用敏感之成份需要特別處 理且常貯存於填充保護性氣體之充氣包裝中。於此等醫鱗 活性成份之調配過財加人相當多量安定劑。 然而,現已發 :抗氧化劑而 根艨本發明,係提供 L一種安定聚烯大環内醋之方 純化之*护允# + 匕括添加抗氧化劑i 、衣-曰,較佳為於其分離步驟開始時添加。 此方法特別適用於製 、、 化劑之用一… 女定化聚婦大環内輯。覃 儿片】 < 用里且至南達1 重量為㈣… &佳為0·01至〇·5%(以大環内艇 丰计)下文中,稱此等少量為催化劑。 除上述之外,本發明亦提供·· ,例如··散裝混合物 較佳為催化劑。 例如·結晶型或非晶 ’其包含 型。或者 2· —種固態型式之混合物 聚烯大環内酯及抗氧化劑, 該混合物可呈顆粒型式,
O:\99\99731.DOC 1270550 其可為無菌或實質上無菌之狀態,例如:於適合作醫藥用 之狀態。 3.以上述2項中定義之混合物於製造醫藥組合物上之用 途。 聚烯大環内酯之實例為例如··含有共輛雙鍵之分子,例 如:彼等具有抗生素及/或免疫抑制劑性質者,例如含有 内醯胺或内酯鍵之大環内酯及其衍生物,例如:具有類似 天然大環内酯之生物活性性質之化合物,例如:經化學取 代之大環内自旨。適當的實例包括,例如:雷帕黴素 (rapamycins)及囊菌素(ascomycins)。聚烯化合物為含有至 少2個共輛雙鍵,例如:三個共輛雙鍵之化合物。 雷帕黴素為一種已知之内醯胺大環内S旨,可由例如吸水 鏈徽菌(Streptomyces hygroscopicus)生產。雷帕黴素之構 造已於 H·克斯勒(Kessler)等人;1993; Helv. Chim. Acta, 76:117中提出。雷帕黴素具有抗生素及免疫抑制劑性質。 雷帕黴素之衍生物為已知者,例如:16-0-取代之雷帕黴 素,揭示於例如:W0 94/02136 及 WO 96/41807 中,40-0-取代之雷帕黴素揭示於例如·· W0 94/09010, WO 92/05179,WO 95/14023,94/02136,W0 94/02385及 WO 96/13273中,其均以提及之方式併入本文中。較佳之雷帕 黴素衍生物為例如··說明於W0 94/09010第1頁上之式A中 位置40處之羥基經-OR取代之雷帕黴素,其中R為羥基烷 基,羥基烷氧基烷基,醯胺烷基或胺基烷基,例如:40-0-(2-輕基)乙基-雷帕彳致素’ 40-〇-(3-經基)丙基-雷帕撤素
O:\99\9973l.DOC 1270550 及40-〇-[2-(2-羥基)乙氧基]乙基-雷帕黴素。 子囊菌素中最廣為人知者為FK-506及子囊菌素,其形成 另一群内醯胺大環内酯類,許多此類化合物具有強力免疫 抑制活性及抗發炎活性。FK506是由鏈黴菌Strept〇myces tsukubaensis所生產之内醯胺大環内酯。FK506之結構示於 默克索引(Merck Index)第11版(1989)之A5項中。子囊菌素 說明於例如·· USP 3,244,592中。子囊菌素,FK506,其他
具有類似生物活性之天然大環内酯及其衍生物,例如:合 成之類似物及衍生物均統稱為”子囊菌素類,,。合成之類似 f及衍生物之實例為例如:幽化子囊@素,例如:33·環. 虱_33_去乳子囊菌素,如揭示於EP-A-427,680者,四氫吡 喃何生物,如:揭示於EP-A-626,385者。 特別佳之大環内酉旨為雷帕黴素及40-0-(2-經基)乙基-雷 孕父佳之抗氧化劑為例如:26_二_ 文稱為BUT),維生辛E , 芦生常E或C,以BHT特別佳。 本發明之特別佳、、曰人 基-雷帕黴素與()·2%(:田帕Μ素及.〇-(2’基)乙 劑,較佳為贿,之::。内…量為準計)⑽ 抗氧化劑可於分離 佳為最後分離之牛聰 %加至聚烯大環内_中,較 即將開始之前添加。▲ °寻外加,更佳為於最終沉澱步驟 惰性溶劑中且將疒& /大%内酯為純化態較佳。其可溶於 定化大環内酯例::劑:入所形成溶液中,隨後進行安 非日日型或結晶型的沉殿步驟。本發
O:\99\9973l.DOC 1270550 明之混合物呈非晶型較佳。 所得到之安定化大環内醋對 定,W: F?甘士 1卞用具有驚人之改良釋 疋丨生且其處理和貯存上,例如 艮t 製劑之計夕私# / i 在進一步加工成例如法定 呈非晶型之大環㈣㈣有^丁存以非常容易。此點對 :: 本發明穩定化之大環内醋本身可用於生產所需之法 備^周配物。此等調配物可依據先前技藝已知之方法製 包括=加一種或多種醫藥上可接受之稀釋劑或載劑, 匕括視給要而添加之其他安定劑。 因此本發明更進一步提供: 4· 一種醫藥組合物,其含有如 入n 3有如上文揭不之穩定化混合物 作為活性成份,與一種或多種 劑。 *夕種醤樂上可接受之稀釋劑或載 本發明組合物適於口服,非 非經腸式投樂,局部投藥(例 如:經皮膚),經眼部,經鼻或吸入式投藥(例如:經肺部 投⑽。較佳之組合物為經口服投藥’當活性成份為内酉旨 大環内酯時,以無水組合物較佳。 本發明之醫藥組合物可含有其他職形劑,例如:潤滑 =,崩解劑。界面活性劑’載劑,稀釋劑,風味增強劑 寻。其可呈液態型式’例如:溶液,懸浮液或如微乳液之 乳液’如USP 5,536,729中所揭示者,或者呈固態型式,例
如:膠囊,疑劑,糖衣旋,粉末(包括微粒化或其他小顆 粒),固態分散物,顆粒等,如W〇 97/〇3654中所揭示 者,其内容已以提及之方式併於本文中,或為半固態I
O:\99\9973l.DOC !27〇55〇 式’如 車人貧,凝膠,乳霜及糊狀。 備,根據本發明耨… -了依據已知方法製 合;_ ^化之大環⑽旨與其他成份於授摔下混 旋狀。'、讀磨或研磨且若需要時,可塵製成例如·· 夯明對呈液態或固態型式之 利。一豨姓w a 田旧馓系、,且口物特別有 發明安定1 物為固態分散物,例如:含有拫據本 物月:=之雷帕徽素及载體介質,例如:水溶性聚合 示者 &丙基甲基纖維素’例如·· W0 97/03654中所揭 本t明組合物適用於大環内3旨已知之適應症,其含量 =如已知劑量。例如·· #該大環内酯具有免疫抑制劑性質 才例如· f帕黴素或雷帕徽素衍生物,該組合物可用 於’例如:預防或治療器官或組織之急性或慢性之同種或 :種移植之排斥現象,自體免疫疾病,或發炎病症,哮 而’增生性病變,例如:腫瘤,或過度增生性血管病變。 大%内酯及其組合物之施藥量取決於數種因素,例如: 所用之活性成份’肖治療之病症,治療持續之時間等。舉 ,而言,雷帕黴素或40-0-(2-羥基)乙基·雷帕黴素之適^ 每曰口服劑量含有^丨至10毫克,可以一次或分數次 藥。 另一方面,本發明亦提供呈結晶型,特別是呈實質上精 純型式之40-0-(2-羥基)乙基-雷帕黴素。較佳者,該結晶 型式之特徵為不帶有或實質上不帶有任何溶劑成份;其係 呈非溶劑化型式存在。 O:\99W731.DOC -10- 1270550 呈結晶型之40-〇♦經基)乙基_雷帕徽素屬於單斜晶系 結晶。所得到之結晶炫點為⑷^价,特別是146穴。 為了協助鑑別該新結晶型,而提供χ·光繞射分析數據。獲 得此等數據之操作條件如下··
溫度 波長 間隔基團 早位晶格大小 a b c β 體積 Ζ 密度(計算值) 吸光係數 F(000) 結晶大小
資料收集之0範圍 收集之反射 獨立反射 強度衰變 精算方法 數據/限制/參數 293(2)K
1.54178A Ρ2ι
14.378.(2)A 11·244(1)Α 18.310(2)Α 108.58(1)° 2805.8(6)Α3 2 1.134 g/cm3 0.659 mm"1 1040 0.59x0.1 1x0.03 mm 2.555.57.20° 4182 4037[R(int)=〇.〇341] 32% F2之全矩陣最小平方 3134/1/613
O:\99\99731.DOC -11 - 1270550 F2之良好適配度 1β()55 最終 R指數[I - 2 sigma(I) Ri =0.0574, WR2=0.1456 最大繞射峰及孔洞 0.340及 -0.184 e/A3 呈結晶型式之40-0-(2-羥基)乙基_雷帕黴素之製備可由 , 該非晶型化合物溶於溶劑,例如:乙酸乙酯中,並添加脂 ‘ 族烴CnH2n+2(n=5,6或7)。添加該烴後,所得之混合物於 例如25至50°C下,加熱至例如至高3〇_35π。所得之混合 φ 物可便地於一低溫下貯存,例如低於25°C,較佳為〇至25 C。將該結晶過濾並乾燥。庚烷為較佳之脂族烴。若需 要,可採用成核程序,例如:利用超音波或加晶種。 本發明亦長:供一種純化40-0-(2-經基)乙基_雷帕徽素之 方法,包括自結晶養成介質中,例如:上文所揭示者,使 40-〇_(2-羥基)乙基-雷帕黴素結晶,並且回收所生成之結 晶。該結晶養成介質中,除了彼等上文詳述之成份外,尚 可包含一種或多種其他成份。一種特別適合之結晶養成介 • 質為含有約2份乙酸乙酯及約5份脂族烴,例如:庚烧之介 質。 已發現結晶型40-0-(2-羥基)乙基_雷帕黴素具有可以與 非晶型相比擬之試管内及活體内免疫抑制活性。於局部之 • GvHD中,使用3毫克劑量之結晶型4〇_〇_(2_羥基)乙基·雷 帕黴素,對淋巴結腫大可達到最大抑制程度(7〇〜8〇%)。 40-0-(2-羥基)乙基-雷帕黴素適用於其非晶型化合物已 知之相同適應症,例如:預防或治療急性及慢性同種或異 種移植排斥現象,自體免疫疾病或發炎病症,哮喘,增生 O:\99\99731.DOC -12- 1270550 性病變’例如:腫瘤,或過度增生性血管病變,例如揭示 於WO 94/090H)或WO 97/35575中者,其内容已以提及之 方式併於文中。一般而言,〇.05至5或至高7〇毫克/公斤/天 之口服劑量可達到令人滿意之效果,例如:以〇1至2或至 向7.5毫克/公斤/天之劑量一次投藥或每日分2至4次投藥。 ' 對病患適當之每曰劑量因而可至高達到10毫克,例如: 0.1至10毫克。 • 結晶型40-〇-(2-羥基)乙基.雷帕黴素可以任何方便之方 式投藥,例如:口服,例如:錠劑或膠囊,或由鼻或由肺 部投藥(藉由吸入)。其可以單一活性成份或與其他藥物例 • 如:免疫抑制及/或免疫調節劑及/或抗發炎劑一起投藥, 例如:WO 94/09010中所揭示者。 根據前文,本發明亦提供: 5.—種對有此需要之個體預防或治療急性或慢性同種或 異種移植之排斥現象,自體免疫疾病或發炎病症,哮喘, 鲁增生性病變,或過度增生性血管病變之方法,該方法包括 對該個體施用治療有效量之結晶型40-0-(2-羥基)乙基_雷 帕黴素; 。 人6.以結晶型40_〇_(2_羥基)乙基_雷帕黴素作為醫藥之用 .途;例如:用於上文所揭示之方法中; 7·—種醫藥組合物,其含有結晶型4〇-〇_(2_羥基)乙基-雷 帕黴素及其醫藥上可接受之稀釋劑或載體; 土 8·—種用於免疫抑制或發炎之套組或包裝,包括上文所 揭示之醫藥組合物及含有免疫抑制或免疫調節藥物或抗發
O:\99\99731.DOC -13-
1270550 炎劑之醫藥組合物。 【實施方式】 下列實例說明本發明,但不加以限制。 i例1 ··結晶化
於40C下,將0.5公克非晶型4〇_〇_(2_經基)乙基-雷帕徵 素溶於2·〇毫升乙酸乙醋中。添加5·〇毫升庚烧,該溶液轉 呈礼狀。加熱至30。(:後,該溶液再度變澄清。冷卻至〇 C並刮除浮出溶液之油狀。封住該試管並於阶貯存過 夜。所得之大量白色固體過濾並以〇·5毫升乙酸乙酯/己烷 (1:2.5)混合液清洗,所得結晶於4〇t,5毫巴下乾燥丨^、 怜。得到熔點為146.5°C之結晶型40_〇-(2-羥基)乙基·雷帕 黴素。 大規模之結晶化可依下述方法進行: 將250公克非晶型4〇-〇-(2-羥基)乙基_雷帕黴素於氟氣中 緩緩攪拌下,溶於1 ·〇公升乙酸乙酯中。該溶液於3〇。〇下 Φ 加熱並於45分鐘内逐滴添加1 ·5公升庚烷。於同樣條件下 將0.25公克依上文揭示之方法製得之晶種分次加入。該混 合物再於30°C下攪拌超過2小時,並將該結晶混合物冷卻 至25 C超過1小時,再降至1〇它維持3〇分鐘後過濾。以1〇〇 宅升乙酸乙酯/己烧(2:3)混合液洗務該結晶。隨後於5〇。〇 及約5毫巴下乾燥。熔點為i46.5t。於溴化鉀中之紅外線 、吸光值為:3452,293 1,1746,1717,1617,1453, 1376 , 1241 , 1191 , 1163 , 1094 , 1072 , 1010 , 985 , 896 cm-1有座標之單-X光結構列於文後之圖1至圖3中。 O:\99\99731.DOC -14- 1270550 安定化.ΟΙ經基)乙基 將隱克抓邮爛乙基-雷帕徽素 水酒精中。加人0.2公克BHT後,將所得溶液在攪掉下於i 小時内滴加至3.0公升水中。將所得之懸浮液再㈣%分 鐘。過濾後再清洗(每次以體積比5:1之水/酒精混合液細 毫升清洗3次)’所得到之濕白色產物再於抑及真空㈣
巴)下乾燥48小時。所得之乾燥產物含有〇 2%(重量 比)BHT 〇 副 該產物顯示改善之貯存安定性。經過丨星期之貯存後, 產物及分解產物之百分比總和如下·
化合物 實例 1(0.2% BHT) 不添加BHT 5〇 C,於不封口之三角瓶中 1.49 >10 上述實例之步驟可使用雷帕黴素為活性成份,再重複一 次。 【圖式簡單說明】 圖1至3顯示本發明實例!獲得之4〇_〇_(2羥基)乙基·雷帕 黴素之單一X光結構及座標。 O:\99\99731.DOC 15-
Claims (1)
- i 1270550 十、申請專利範圍: 1. 一種結晶型式4〇-〇-(2_羥乙基雷帕黴素(rapamycin),其 特徵在於其具有a=14 37A、b=U 24A、c=18 3lA及體積 為2805人3之晶格。 2. —種醫藥組合物,其包含根據申請專利範圍第丨項之4〇_ 0 (2 I乙基)_雷帕黴素作為活性成份,以及一或多種適 用於其之醫藥上可接受稀釋劑或載體。 3· —種製造根據申請專利範圍第"員之結晶型式之4〇_〇_(2_ 羥乙基)-雷帕黴素之方法,其包含自已預混脂族烴 CnH2n+2(其中5、6或7)之溶液中結晶4〇-〇-(2_羥乙基)_ 雷帕黴素,及將由此獲得之結晶予以轉化。 4·根據申請專利範圍第3項之方法,其中該溶劑為乙酸乙 m °O:\99\99731.DOC
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