TW200529883A - Pharmaceutical composition - Google Patents
Pharmaceutical composition Download PDFInfo
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- TW200529883A TW200529883A TW093134728A TW93134728A TW200529883A TW 200529883 A TW200529883 A TW 200529883A TW 093134728 A TW093134728 A TW 093134728A TW 93134728 A TW93134728 A TW 93134728A TW 200529883 A TW200529883 A TW 200529883A
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- Prior art keywords
- microparticles
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- compound
- somatostatin
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- 239000008194 pharmaceutical composition Substances 0.000 title claims abstract description 6
- 239000011859 microparticle Substances 0.000 claims abstract description 46
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Description
200529883 九、發明說明: 【發明所屬之技術領域】 本發明係關於包含生長抑素類似物之微粒,且係關於包 含該等微粒之醫藥組合物。 【先前技術】 生長抑素係具有以下結構的十四肽: I-----1 1 2 3 4 5 i 7 8 9 10 11 !2 13 14 尤其相關之生長抑素類似物已描述(例如)於WO 97/01579 及WO 02/10192中。該等生長抑素類似物包含式I之胺基酸 序列
-(D/L)Trp-Lys-X!-X2- I 其中,Xi為式(a)或(b)基團 —NH— — CO*·*"*1 ~NN—|— CO^ _ 0¾ m cn^ r* 其中Ri為視情況經取代之苯基,其中該取代基可為鹵素、 曱基、乙基、甲氧基或乙氧基, R2為-Zi-CHyRi、-CHrCO-O-CHd
其中Ziao或s,且 X2為於ca側鏈上具有一芳族殘基之α-胺基酸,或為選自以 下各物之胺基酸單元·· Dab、Dpr、Dpm、His、(Bzl)HyPro、 噻吩基-Ala、環己基-Ala及第三丁基-Ala,該序列之Lys殘 9705l.doc 200529883 基對應於天然生長抑素14<Lys9殘基。 此等化合物下文稱為本發明之化合物。 【發明内容】 如本文中所使用之”生長抑素類似物”意謂自天然發生之 生長抑素14所衍生之直鏈肽或環肽,其包含式〗序列,且其 中還省略了一或多個胺基酸單元及/或藉由一或多個其它 胺基酸基團置換,及/或其中一或多個官能基係已藉由一或 夕個其匕g能基置換,及/或一或多個官能基係已藉由一個 或數個其它等排基團置換。大體而言,該術語涵蓋天然生 長抑素14的所有經改質之衍生物,包含對至少一種如下文 所界定之生長抑素受體亞型具有奈米範圍内之結合親合力 的上述式I序列。 較佳地生長抑素類似物為其中於生長抑素1 4之第g至1 1 位上之殘基係由如前所界定之式1序列來表示的化合物。 更佳地,生長抑素類似物為包含六肽單元之如前所揭示 之化合物,该六肽單元於第3至6位上之殘基包含式丨序列。 尤其較佳係一生長抑素六肽,其中該六肽單元於第丨及2位 上之殘基可為任何於此項技術中已知者,例如由A. s · DuUa 於 Small peptides,第 19卷,第 292 354 頁,Elsevia,Μ” 中所揭示,或作為生長抑素14之汕66及/或phe7之取代基。 尤其更佳地,生長抑素類似物為其中之六肽單元呈環狀 之化合物,(例如)其具有在第六位殘基之…羰基與第丨位殘 基之α-胺基之間的直接肽鍵。
當式I序列中之Lys、Χ】&Χ2具有L組態時,丁卬可具有D 97051.doc 200529883 組態或L組態。較佳地,Trp具有D組態。 乂丨較佳為式(a)或(b)之殘基,R2較佳為 •Zr〇VRi aCHrRi ·。 當乂2於ca側鏈上包含一芳族殘基時,其可適當地為一天 然或非天然α-胺基酸,例如Phe、Tyr、Trp、Nal、Pal、苯 幷σ塞吩基-Ala、Tic及甲狀腺原胺酸(thyronin),較佳為Phe 或Nal,更佳為Phe。X2較佳為於(:《側鍵上帶有一芳族殘基 之ce-胺基酸。 當1^為經取代之苯基時,其可適當地經鹵素、甲基、乙 基、甲氧基或乙氧基(例如)於鄰及/或對位上取代。更佳地, Ri為未經取代之苯基。
Zi較佳為Ο。 本發明之代表性化合物為(例如)式(II)化合物, cydo[A - ZZa- (D/L)Trp - Lys - X^J (") 1 a 3 4 5 e 其中
Xl及X2如上所界定, A係選自以下各物之二價殘基:Pro, (fVNH-COO)PrcK Rs-lf 丨 ΗΟ-^Ργο,
CO %料>,N FVNH-C€M>(VCH(l|R>CO,and ^HH^CH^CO 其中R3為NR8R9-C2_6伸烷基、胍基<2_6伸烷基或c2_6伸烷基 97051.doc 200529883 -COOH ’ Rh為Η、Ci·4烧基或獨立地具有給定於&之意義中 之一種,1^為Η或C"烧基,Ra為0H或隱也,心為_(CH2)13_ 或-CH(CH3)-,I為η或CH3,為視情況之環經取代之苯 甲基,R5及I各自獨立地為H、Cm烷基、ω_胺基_Cm伸烷 基、ω-羥基-Ch伸烷基或醯基,&為直接鍵或伸烷基, h及R9各自獨立地為H、Cw烷基、ω-羥基_C2-4伸烷基、醯 基或 CH2OH-(CHOH)c-CH2-,其中 c為 〇、i、2、3或4,或r8 及R9與其所附著之氮原子一起形成可包含另一雜原子之雜 環基團,且Rn視情況為環部分經取代之苯甲基、 -(CHdwOH、CH3-CH(OH)-或-(CHJuNH,且 zza為天然或非天然之α_胺基酸單元。 ZZa可具有D組態或L組態。當ZZa為天然或非天然之心胺 基酸單元時,其可適當地為(例如)Thr、Ser、Ala、%卜以、 Leu、Nle、His、Arg、Lys、Na卜 Pal、Tyr、Trp、視情況 之環部分經取代的Phe4Na-苯甲基_Gly。當ζζ&為phe時, 其苯環可經(例如)皿2、N〇2、CH3、〇CH3或鹵素取代,較 佳於對位取代。當ZZa為Phe時,其苯環較佳未經取代。 當A包含一 pro胺基酸殘基時,任何存在於脯胺酸環上之 取代基(例如RrNH-CO-O-等等)較佳係位於第4位置。此經 取代之脯胺酸殘基可以順式形態(例如) Η 11 t ο 以及反式形態存在。每一幾何異構物各自及其混合物均為 本發明之化合物。 97051.doc -9- 200529883 當A為 (NR8R9-C2-6伸烷基-NH_CO-0)Py〇- 其中NRSR9形成雜環基團,此基團可為芳族或飽和的,且可 包含一個氮原子或一個氮原子及選自氮及氧之第二個雜原 子。該雜環基較佳為(例如比啶基或嗎啉基。此殘基中之 C2_6伸烷基較佳為-CH2_CH2-。 任何如A中之Rs、&、Rs及&之醯基均可為(例 如)R12CO·,其中R12為Η、Cw院基、c2_4烯基、C3-6環燒基 或苯甲基,較佳為甲基或乙基。當A中之或Ru為環部分 經取代之苯甲基時,該苯環可經如上所指明之對於ZZa之取 代0 尤其較佳為以游離形態、鹽形態或經保護形態之式Ιπ化 合物:
其中C-2處之組態為或〇或其混合物,且 其中R為NR10Rn-C2_6伸烷基或胍基-C2-6伸烷基,且R10及ru 各自獨立地為Η或Cl_4烷基。 較仏地’ R為NR^oRn-C:2·6伸烧基。較佳之式ΙΠ化合物為 彼等以游離形態、鹽形態及經保護形態者,其中R為2-胺基 97051.doc -10- 200529883 -乙基,意即環[{4-(NH2-C2H4-NH-CO-〇-)pro}-Phg-DTi*p-LyS_Tyr(4-BZl)-Phe](本文中稱作化合物a)及環 [{4-(NH2«C2H4-NH-CO-〇.)Pro}-DPhg-DTrp-Lys-Tyr(4-Bzl) -Phe]。Phg 意謂-HN-CH(C6H5)-CO-,且 Bzl意謂苯甲基。 本發明之經保護形態化合物對應於其中至少一個胺基係 受保護且藉由去保護作用(較佳為生理可移除)生成式Η或 III化合物的生長抑素類似物。適當之胺基保護基團係(例如) 如 Protective Groups in Organic Synthesis”,T.W· Greene, J· Wiley & Sons NY (1981),第 219-287頁所揭示,其内容係 以引用的方式併入本文中。此胺基保護基團之實例為乙醯 基0 本發明之化合物,例如式m化合物,諸如化合物A,可 以(例如)游離或鹽形態存在。鹽包括與(例如)無機酸 '聚合 酸或有機酸之酸加成鹽,例如與鹽酸、乙酸、乳酸、天冬 胺酸、苯甲酸、琥珀酸或雙羥萘酸之酸加成鹽。酸加成鹽 :以早價鹽或二價鹽存在,(例如)此視加入酸等效物而 疋+例而σ,對於化合物A之較佳之鹽為包括單鹽及二鹽 j内的乳酸鹽、天冬胺酸鹽、苯甲酸鹽、琥珀酸鹽及雙羥 奈&L鹽,更佳為天冬胺酸二鹽及雙羥萘酸單鹽。 根據習知之方法可製備本發明之化合物。 通常,本發明之化合物係經體液系統運送,例如以非妳 =式尤其是在反覆投藥中,非經腸方式投藥可能 =痛為將對患者注射之次數降至最低,應投 的儲存調配物。 田 97051.doc 200529883 吾等已發現投藥包含(例如)經栽入至生物相容性藥理學 上可接受之聚合物中且懸浮於適當媒劑中之生長抑素類似 物的微粒給予所有或大If卜你:古、、工μ p 丁岍名:¾人體上所有活性劑歷經延長時期之釋 放時間,例如數週高達6個月,較佳為歷時至少4週。 相應地,本發明提供包含(例如)嵌入至生物相容性藥理 學上可接受之聚合物中之本發明化合物的微粒,及包含該 等微粒之醫藥上的儲存調配物。 以該等微粒之乾重計,本發明之化合物可m至約6〇%之 里存在,更通常為約10至約50。/。,較佳為約2〇至約4〇%,甚 至更佳為約25%至約35%。 較佳地,用以製備該等微粒之本發明之化合物為非晶系 粉末,其具有約⑴丨微米至約15微米之粒子尺寸,較佳為低 於約5微米,甚至更佳為低於約3微米。 本發明之化合物之粒子尺寸分佈可影響該藥物自微粒中 之釋放曲線。通常,粒子尺寸愈小,於最初擴散期期間(例 如最初之20天)之碎裂及釋放量愈低。較佳地,粒子尺寸分 佈為(例如)χ10<0·8微米,意即ι〇%之粒子小於〇8微米; χ50<1·5微米,意即50。/。之粒子小於K5微米;或χ9〇<3 〇微 米,意即90%之粒子小於3·〇微米。 該等微粒之聚合物基質可為合成或天然聚合物。該聚合 物可為生物可降解或非生物可降解或生物可降解與非生物 可降解聚合物之組合中之任一種,較佳為生物可降解聚合 物。 聚合物思谓均聚物或共聚物。 97051.doc -12- 200529883 该聚合物基質經設計以充分降解而於釋放所有或大體上 所有活性劑之後1至6個月内自投藥位點輸送。 適當之聚合物包括: (a) 線形或分枝狀聚酯,其係自多元醇基團(例如葡萄糖) 上發出之線形鏈,例如,諸如D_、“戈外消旋聚乳酸、聚 乙醇&L |羥基丁酸、聚己内酯、聚烯烴草酸鹽之聚酯, 克氏循環(Kreb’s cycle,例如擰檬酸循環)之酸之聚伸烷二 醇S旨’及其類似物或其組合, (b) 有機醚類、酸酐類、醯胺類及原酸酯類之聚合物或共 水物L括此等與其它單體之共聚物,例如聚酸酐,諸如 1,3-雙-(對絲苯氧基)_丙燒與二酸(如癸二酸)之共聚物, 或芥子酸二聚體與癸二酸之共聚物;由原酸酯與三醇(例如 1,2,6-己三醇),或由二乙烯酮縮醛(例如3,9_二亞乙基· 2,4,8,1〇-四氧螺[5,5]十一烧)與二醇(例如u•二己二醇、三 乙-醇或1,10-癸二醇)之反應所生成之聚原酸醋·,或以酿胺_ 二醇單體(例如i,2·二(經基乙酿胺基)_乙烧或1,10-二-(經 基乙醯胺基)-癸烷)所獲得之聚醯胺酯;或 (c) 聚乙烯醇。 該等聚合物可為交聯型或非交聯型,通常不多於5%,一 般少於1 %。 較佳之本發明聚合物為線形聚酯及分枝鏈聚酯。線形聚 醋可藉由内酉旨:聚體之縮合作^自㈣基叛酸(例如乳 &L及/或乙醇酸)製備’例如,參見us 3,773,919號專利,其 内奋係以引用的方式併入本文中。線形或分枝狀(星狀)聚合 97051.doc 200529883 物中之較佳聚酯鏈為〇:-羧酸基團、乳酸及乙醇酸之共聚 物,或内酯二聚體之共聚物。線形或分枝狀聚酯中之聚丙 交酯-共-乙交酯的丙交酯:乙交酯之莫耳比率較佳為約 75:25 至 25:75(例如 60:40 至 40:60),且 55:45 至 45:55(例如 52:48 至 48:52)最佳。 根據本發明較佳所使用之線形聚酯,例如線形聚丙交酯_ 共-乙交酯(PLG),具有在約10,000與約500,000道爾頓之間 的重量平均分子量(Mw),例如約50,000道爾頓。此等聚合 物具有(例如)在1.2與2之間的Mw/Mn#分散性。適當之實例 包括(例如)聚(D,L-丙交酯-共-乙交酯),其(例如)具有通式 -[(C6H804)x(C4H404)y]n-(x、y及η各自具有使其總和得出如 前所指明之Mws的數值),例如自Boehringer Ingelheim購得 之 Resomers®,尤其為 Resomers® RG,例如 Resomers® RG 502、502H、503、503H、504、504H 〇 根據本發明所較佳使用之分枝狀聚酯,例如分枝狀聚丙 交酯-共-乙交酯,可使用多羥基化合物(例如多元醇,例如 葡萄糖或甘露醇)作為引發劑來製備。多元醇之此等酯類係 已知的且描述(例如)於GB 2,145,422 B號專利中,其内容係 以引用的方式併入本文中。該多元醇含有至少3個羥基且具 有高達20,000道爾頓之分子量,其中該多元醇之羥基中的 至少一個且較佳至少兩個(例如平均3個)為酯基之形態,其 含有聚丙交酯或共-聚丙交酯鏈。通常使用0.2%之葡萄糖來 引發聚合作用。分枝狀聚酯(葡萄糖(Glu)-PLG)有一具有線 形聚丙交酯鏈射線的中心葡萄糖基,(例如)彼等具有星形結 97051.doc -14- 200529883 構。 具有線形聚丙交酯鏈(Glu-PLG)射線之中心葡萄糖基的 分枝狀聚酯可於高溫、在觸媒存在下(其使得開環聚合作用 可行)使多元醇與丙交酯且較佳地亦與乙交酯反應而製備。 擁有一具有線形聚丙交醋鍵(Glu-PLG)射線之中心葡萄 糖基團的分枝狀聚酯較佳具有於在約1〇,〇〇〇至2〇〇,〇〇〇範圍 内之重量平均分子量Mw,較佳為25,000至1 〇〇,〇〇〇,尤其為 3 5,000至60,000,例如約50,000道爾頓,且具有(例如)自17 至3.0例如2.0至2.5之多分散性。Mw 35,000或]\^ 60,000之星 狀聚合物於氣仿中之固有黏度分別為〇.36或〇51 dl/g。Μ% 52,000之星狀聚合物於氯仿中之黏度為〇_475 di/g。 無論是使用均聚物或共聚物還是使用聚合物之混合物, 用於本發明化合物之所需聚合物降解度及所需釋放曲線均 可依單體類型而變化。 聚合物之混合物可包含至少兩種不同類型之聚合物,例 如如前述(a)至(e)中所列舉;或同一聚合物類別中具有不同 特性的兩種聚合物。舉例而言,聚合物之混合物可包含中 間重量平均分子量(例如)為約3〇,〇〇〇至約60,000道爾頓例 如約50,〇〇〇道爾頓之聚合物,及低重量平均分子量(例如) 為約2,000至約20,000道爾頓例如約1〇,〇〇〇道爾頓之聚合 物。 較佳地,聚合物基質包含線形及/或分枝狀聚丙交酯-共_ 乙父知。更佳地’该聚合物基質包含Res〇mer@ rg,其係 一種具有約10,000道爾頓之重量平均分子量的星狀聚丙交 97051.doc •15- 200529883 ®曰/、-乙父酯聚合物,·及/或一具有約5〇,〇〇〇道爾頓之重量 平均为子置的星狀聚丙交酯_共_乙交酯聚合物。線形與分枝 狀承丙乂酯共·乙交酯之比率較佳為0:100至100:0 ,例如 50:50至 25:75。 來否物基質可以該等微粒重量之約4〇至99%的總量存 在。 該等微粒可進一步包含可影響微粒孔隙率之試劑。此試 劑可為(例如)·· 勾聚乙烯吡咯啶酮,其較佳具有在約2,000與約20,000道 爾頓之間之分子量。適當之實例包括彼等一般已知為具有 約2,500道爾頓之平均分子量的Providone K12 F、具有約 8’〇〇〇道爾頓之平均分子量的provid〇ne ,或具有約 10, 〇〇〇道爾頓之平均分子量的Pro vi done Κ1 7。 較佳地,聚乙烯吡咯啶酮以微粒重量之約〇1至約5〇%之 量(例如約10%)存在。 b) 羧甲基纖維素鈉(CMC-Na),其較佳具有低分子量。黏 度可為(例如)對於2%水溶液高達20 cp或8至25 mpa s之黏 度。適宜地,取代度為約〇·5至約L45,較佳為約〇·7。通常, 鈉含量為約5%至約12%。較佳地,CMC_NMf、以微粒重量之 約0.1至約20%之量(例如約5%)存在。 c) 糊精,其(例如)具有在i,〇〇〇至5〇,〇〇〇道爾頓範圍内之平 均刀子里,較佳為5,0〇〇道爾頓。較佳地糊精具有精細的粒 子尺寸分佈,例如x90低於20微米。 較佳地’糊精係以微粒重量之約〇. 1至約1 /()又里(例如約 97051.doc -16- 200529883 5 %)存在。 d)聚乙二醇,其(例如)具有在約至約1〇,〇〇〇道爾頓範 圍内之重量平均分子量,較佳為約至約3,35〇道爾頓。 適當之實例包括彼等一般已知者且以Carb0wax⑧為商標名 自Dow&Union carbide購得,其具有(例如)3 35〇道爾頓之 Mw。具有3,350道爾頓之重量平均分子量的聚乙二醇於 98.9+/_0.3°C時具有76至ll〇cSt之黏度。具有在10〇〇至35〇〇 道爾頓範圍内2MW的聚乙二醇於98·9+/_0·3χ:時具有在16 至123 cSt範圍内之黏度。 該等微粒可進一步包含界面活性劑。適當之界面活性劑 包括非離子界面活性劑,諸如: a) 泊洛沙姆(P〇i〇xamer),其亦已知為聚環氧乙烷聚環氧 丙烷嵌段共聚物,其(例如)具有約2〇〇〇至約8〇〇〇道爾頓之分 子量。乙烯部分之聚合度通常為80至約11〇個單元。丙稀部 分之聚合度通常為20至約60個單元。根據本發明所適用之 此等化合物之實例為彼等已知者且(例如)以商標名 Pluronic® F68 自 BASF德國購得。 b) 聚環氧乙烷-山梨糖醇_脂肪酸酯,例如已知類型且以商 品名TWEEN®購得之(例如)單·及三_月桂基、棕櫚基、硬脂 基及油基酯,例如吐溫20[聚環氧乙烷(20)山梨糖醇單月桂 酸酯]、吐溫40[聚環氧乙烷(2〇)山梨糖醇單棕橺酸酯]、吐 溫60[聚環氧乙烷(20)山梨糖醇單硬脂酸酯]、吐溫8〇[聚環 氧乙烷(20)山梨糖醇單油酸酯]、吐溫65 [聚環氧乙燒(2〇)山 梨糖醇三硬脂酸酯]、吐溫85[聚環氧乙烷(2〇)山梨糖醇三油 97051 .doc -17- 200529883 酸酯]、吐溫21[聚環氧乙烷(4)山梨糖醇單月桂酸酯]、吐溫 61 [聚環氧乙烷(4)山梨糖醇單硬脂酸酯],及吐溫81[聚環氧 乙烷(5)山梨糖醇單油酸酯]。較佳為吐溫20及吐溫80。 c) (例如)已知類型且以商標名SPAN購得之山梨糖醇脂肪 酸酯,例如包括山梨糖醇單月桂基酯、單棕櫊基酯、單硬 脂基酯、三硬脂基酯、單油基酯及三油基酯。 d) 卵填脂,例如大豆填脂,例如已知且以商標名Lipoid® S75自Lipoid購得;或蛋卵磷脂,例如已知且以商標名 Phospholipon® 90 自 Nattermann 購得,及購自 Degussa, Bioactives之 Epikuron 100H或 Epikuron 145 V、Epikuron 170 或 Epikuron 200 〇 較佳地,使用泊洛沙姆、吐溫20及/或吐溫80。 若用於將本發明之化合物嵌入之聚合物為聚酯,則該等 微粒較佳地進一步包含鹼性化合物,諸如鹼式鹽或鹼,例 如驗式碳酸鋅、氫氧化鎮、碳酸鎮;或精蛋白,例如人精 蛋白或鮭魚精蛋白;或帶有胺殘基之天然或合成聚合物, 諸如聚離胺酸或二甲胺基乙基甲基丙烯酸酯。 吾等將關於對本文中所提及之此等及其它賦形劑及程序 之主題的廣泛文獻作為參考文獻,尤其見於Handbook of Pharmaceutical Excipients,第二版,Ainley Wade及Paul J. Weller編,American Pharmaceutical Association,Washington ,USA,Bl Pharmaceutical Press,London ;及 Lexikon der Hilfsstoffe ftir Pharmazie,Kosmetik及 angrenzende Gebiete ,H.P. Fiedler編,第四版,Editio Cantor,Aulendorf及較 97051.doc -18- 200529883 早版本,該等係以引用的方式併入本文中。 較佳地,本發明之微粒含有作為活性組份之僅本發明之 化合物,例如式Π化合物,較佳為式III化合物,甚至更佳 為化合物A。較佳地,本發明之微粒含有以雙羥萘酸鹽形態 之本發明化合物,例如式II或III之化合物,甚至更佳為化 合物A之雙羥萘酸鹽。 可用於製備本發明之微粒的程序可為此項技術中習知的 或已知的或基於(例如)彼等描述於以下文獻中者:L. Lachman 等人,The Theory and Practice of Industrial Pharmacy,第三版,1986 ; H. Sucker等人,Pharmazeutische Technologie ,Thieme , 1991 ; Hager’s Handbuch der pharmazeutischen Praxis,第四版(Springer Verlag,1971); Remington’s Pharmaceutical Sciences,第 13版(Mack Publ” Co·,1970)或較晚版本及E. Mathiowitz’s Encyclopedia of Controlled Drug Delivery(John Wiley & Sons· Inc.,1999) o 本發明於另一態樣中提供製備本發明之微粒的方法,其 包含: (i) 製備内部有機相,其包含: (ia)將該或該等聚合物溶於適當的有機溶劑或溶劑混 合物中, 且視情況 -將孔隙率影響劑溶解/分散至得自步驟(ia)之溶 液中,或 -添加鹼式鹽至得自步驟(ia)之溶液中, 97051.doc -19- 200529883 -添加界面活性劑至得自步驟(ia)之溶液中; (lb)將本發明之化合物懸浮於得自步驟(ia)之聚合物 溶液中,或 將本發明之化合物溶於一種可與步驟(ia)中使用 之溶劑混溶之溶劑中,且使該溶液與聚合物溶液 合’或 將本發明之化合物直接溶於聚合物溶液中,或 將以水可/谷性鹽形態之本發明之化合物溶於水相 中且以聚合物溶液(ia)乳化該水溶液; (i i)製備外部水相,其包含: (ua)製備pH調節至7-7·5之緩衝液,例如乙酸鹽或磷酸 鹽緩衝液,例如Na2HP〇^KH2P〇4,及 (iib)將穩定劑溶於得自步驟(iia)之溶液中; (iii) 使用(例如)產生高前七七 肖士 门J切力之衣置(例如渦輪機或靜態混 合器)混合内部有機相與外部水相以形成乳液;及 (iv) 藉由溶劑蒸發或溶劑萃取作用硬化該等微粒,(例如) 以水洗滌微粒,收集且乾燥微粒,例如冷凍乾燥或真 空下乾燥。 ’…、 對於該等聚合物之適當有機 溶劑包括(例如): 乙酸乙 酯、丙酮、THF 六氟異丙醇。 乙腈或_化烴,例如二氯甲烷、氣仿或 步驟(iib)中之穩定劑的適當實例包括: 爾 聚
a)聚乙烯醇(PVA),其較佳具有約1〇,_至約150,_道 之重里平均分子量’例如約3M0G道爾頓。適宜地, 97051.doc 200529883 乙烯醇具有低黏度:當於20°C時以4%水溶液或藉由DIN 53015量測時具有約3至約9 mPa s之動態黏度。適當地,聚 乙烯醇可自水解聚乙酸乙烯酯獲得。較佳地,聚乙酸乙稀 醋之含量為聚乙烯醇之約1〇至約9〇%。適宜地,水解度為 約85至約89%。通常,殘餘乙醯基含量為約1〇至12%。較佳 之品牌包括購自 Clariant AG Switzerland之Mowiol® 4-88、 8-88及 18-88 〇 較佳地,聚乙烯醇係以外部水相體積之重量的約〇·丨至約 5%之量存在,例如約〇.5〇/〇 ; b)羥乙基纖維素(HEC)及/或羥丙基纖維素(HPC),其(例 如)係由纖維素分別與環氧乙烷及環氧丙烷反應形成。hec 及HPC可以廣黏度型範圍獲得;較佳地黏度為中度。較佳 之品牌包括自 Hercules Inc·之 Natrosol®,例如 Natrosol® 250 MR,及自 Hercules Inc.之Klucel®。 較佳地,HEC及/或HPC係以外部水相體積之重量的約 0.01至約5%之總量存在,例如約〇·5% ; c) 聚乙烯吼咯啶酮,其(例如)適當地具有在約2,〇〇〇與 20,000道爾頓之間之分子量。適當之實例包括彼等普遍已 知為具有約2,500道爾頓之平均分子量的K12F、具 有約8,000道爾頓之平均分子量的providone K15,或具有具 有約10,000道爾頓之平均分子量的provid〇ne K17。較佳 地,聚乙烯σ比咯啶酮係以外部水相體積之重量的約〇·丨至約 50%之量存在,例如10% ; d) 明膠,較佳為豬明膠或魚明膠。適宜地,於2〇°c時對 97051.doc -21 - 200529883 於謂容液明滕具有約25至約35cps之黏度。通常,職容 液之pH為約6至約7。適當之品牌具有高分子量例如可獲 自 Norland Products Τη η (^ ι 'τ • (Cranbury New Jersey USA)之
Norland高分子量魚明膠。 較佳地,明膠係以外部水相俨 ι 目體積之重ι的約〇· 〇1至約5% 之量存在,例如約0.5%。 較佳地,使用聚乙烯醇。龄# ,吁孕乂仫不使用明膠。該等微粒較 佳不含明膠。 舉例而言’為有助於穿過注射針頭而力求所得之微粒可 具有數微米至數毫米之直徑;例如,最大約25〇微米之直 徑,例如1G至微米’較佳為聰130微米,更佳為1〇至 崎米,甚至更佳為10至60微米。窄粒子尺寸分佈係較佳 的。例如粒子尺寸分佈可為(例如)X10<15微米,x50<40微 米或x90<70微米。 5亥專微粒及一單位密ι|詈夕人θ仏a 平剤里之含里均勻性係優良的。可生產 理論劑量之約75。/。至約!25%範圍 罕固⑼之早位劑ϊ,例如約85 至約11 5%,例如約90 $的ι ι λ〇/ , ]至約110%,或約95〇/〇至約105%。 可於預填充注射針筒或小瓶中 口 j肌Τ 以抗聚結劑混合、塗覆 呈乾燥狀態之微粒,或(例如)覆蓋上一層抗聚結劑。 、適當之抗聚結劑包括(例如):甘露醇、葡萄糖、右旋糖、 庶糖、氣化納,或水溶性臂人私 "口物’啫如(例如)具有前述特性 之聚乙烯吡咯啶酮或聚乙烯醇。 較佳地,抗聚結劑传以例_ 4 4 e K U釗係以被粒重量之約O i至約1〇%之量存 在,例如約4%。 97051.doc -22- 200529883 投藥之前,將微粒懸浮於適合於注射的媒劑令。 因此,本發明進一步提供一種包合 裡已3於媒劑中之本發明微 粒的醫藥組合物。該媒劑可視情況進一步含有··勾一或多 種濕潤劑;及/或b) —或多種張力劑.;/斗、 但浪刀^ ,及/或c)一或多種增黏 劑。 適當地,媒劑係基於水,例如其可含水(例如經去離子), 及視情況為PH調節至7_7.5之緩㈣,例如鱗酸鹽緩衝液, 諸如他册〇4與切21>〇4之混合物,及一或多種如前所指明 之试劑a)、b)及/或c)。 然而,s使用水作為媒劑時,本發明之微粒可能不能懸 序或可能洋於水相上部。為改良本發明之微粒懸浮於水性 介質中的能力,媒劑中較佳包含濕潤劑a)。選擇濕潤劑以 得到該等微粒於媒劑中之快速及適當的懸浮性。較佳地, 該等微粒經媒劑快速濕潤且於其處快速形成懸浮液。 用於將本發明之微粒懸浮於基於水之媒劑中的適當濕潤 劑包括非離子性界面活性劑,諸如前已描述彼等特徵之泊 洛沙姆,或聚環氧乙烷-山梨糖醇_脂肪酸酯。可使用多種濕 潤劑之混合物。較佳地,濕潤劑包含plur〇nic F68,Twea 2〇 及 /或 Tween 80。 該或該等濕潤劑可以待投藥之組合物重量之約〇〇1至約 1%存在,較佳為〇.〇1至05%,且可以每毫升媒劑約〇〇1至5 毫克存在,例如約2 mg/ml。 車乂佳地’媒劑進一步包含張力劑b),諸如甘露醇、氯化 鈉、葡萄糖、右旋糖、蔗糖,或明膠。張力劑較佳為甘露 97051.doc •23- 200529883 醇。 選擇張力劑之量以調節待投藥組合物之等滲壓。若微粒 中含有張力劑(例如)來降低如前提及之聚結作用,則應了解 張力劑之量為二者之總和。舉例而言,甘露醇較佳可為以 待投藥之組合物重量計約1%至約5%,較佳為約4 。 較佳地,媒劑進一步包含增黏劑c)。適當之增黏劑包括 ,甲基纖維素鈉(CMC_Na)、山梨醇、聚乙烯料㈣,或 單硬脂酸紹。 、可方便地使用具有低黏度之⑽·Na。實施例可為如前所 述。通常,使用具有低分子量之CMC_Na。當以1%(w/v) 之水溶液於25t下在Brookfield LVT黏度計中以軸丨於⑼ ㈣時量㈣’黏度可為約丄至約3〇❿s,例如㈣至約 b mPa s’或者對於作為於水中之〇1至1%溶液之 7LF(低分子量)溶液,黏度可為1至15。 可使用具有前述特性之聚乙烯吡咯啶酮。 增黏劑如CMC-Na,可以媒劑(以體積計)之約…至約㈣ 之^例如約〇.7%或約i.75%)且(例如)以約i至約3〇 之濃度(例如約7 mg/ml或約i 7·5 mg/ml)存在於媒劑中。 在另-態樣中,本發明提供包含本發明之微粒及本發明 之媒d的套組。舉例而言,該套組可包含包含精確量的待 投藥之本發明化合物(例如如下所述)的微粒,及約i至約$ ml(例如約2 ml)之本發明媒劑。 在貝化例中,可將視情況混合有抗聚結劑之乾燥微粒 充填至一容器中’例如小瓶或注射針筒,且(例如)使用γ- 97051.doc -24- 200529883 射線相^囷。招·越丄、 / ’、 m 5 9添加諸如前述之媒劑的適當媒 蜊,可將微粒懸浮於該容器 人亡於取,丄 举例而吕,可將視情況混 口有L· ♦結劑、增黏劑及/或 ]的檨粒,及用於懸浮之 置放於雙腔室注射針筒卜微粒與抗聚結劑及/或 曰華加或張力劑之混合物亦構成本發明之部分。 :另:實施财,可將視情況混合有抗聚結劑且於無菌 u下經乾式殺菌之微粒懸浮於適當媒劑中,例如前述之 媒劑,且充填至容φ Y丨 — 益中例如小瓶或注射針筒。然後,(例 女)可藉由冷;東乾燥或於真空下蒸發移除媒劑之溶劑,例如 水:從而於容器中產生微粒與媒劑之固體組份的混合物。 投樂之前,藉由加人適當媒劑,例如水(例如注射用水)或較 佳為低莫耳濃度之鱗酸鹽緩衝溶液,可於容器中懸浮該等 微粒與媒劑之固體組份的混合物。舉例而言,可將微粒、 視清况之抗聚結劑與媒劑之固體組份的混合物及懸浮用媒 劑(例如水)獨立置放於雙腔室注射針筒中。 本發明之微粒及組合物可用於: a)預防或治療具有包含G H過量分泌及/或t g f _}過量或與 此相關之病原學的病症’例如用於治療肢端肥大症以及治 療I型或II型糖尿病(尤其為其併發症,例如企管病變、糖尿 病增殖性視網膜病變、糖尿病黃斑部水腫、腎病變、神經 病堯及黎明現象)’及其它與胰島素或升糖素釋放相關之代 謝障礙(例如肥胖,例如病態肥胖或下視丘或胰島素過度分 泌肥胖)。 &療腸道皮;I及胰腺皮膚瘺管、激躁性腸道症候群、 97051.doc -25- 200529883 ^火性疾病(例如葛瑞夫茲氏病(Graves disease)、發炎性腸 逼疾病、牛皮癬或類風濕性關節炎)、多囊性腎疾病、傾食 症候群、水瀉症候群、aids相關性腹瀉、化學治療誘發性 寫μ丨生或丨叉性胰腺炎及胃腸激素分泌腫瘤(例如gep腫 ; 例士腸/必素瘤(viPomas)、升糖素瘤、胰島素瘤、類癌 及其類似腫瘤)、淋巴球惡性疾病(例如淋巴瘤或白血病)、 肝細胞癌以及胃腸道出血(例如靜脈曲張食管出血)。 c) 預防或治療如前所指明包括發炎性眼部疾病、黃斑部 水腫(例如囊樣黃斑部水腫、囊樣特發性黃斑部水腫、滲透 令相關汽斑邛退化症)、脈絡膜新生血管相關病症及增 殖性視網膜病變在内的血管生成、發炎性病症。 d) 預防或對抗移植性血管錢,例如於器官移植中(例如 心臟、肺、組合心肺、肝臟、腎臟或胰腺移植)之(例如)同 種或異種移植血管病,例如移植性血管動脈粥狀硬化;或 者預防或治療靜脈移植狹窄、再狹窄及/ ^阻塞亀㈣如刚㈣成形術、雷射= 導官插入程序或也管刮拂程序或其它破壞血管内膜或内皮 完整性之侵入性程序而導致者。 e) 治療生長抑素受體表現或積累腫瘤,諸如腦垂體腫 瘤,例如庫欣氏病(Cushing,s Disease)或症候群、胃腸騰腺、 一癌、中柩神經系、统、乳房、前列腺(包括末期激素抗性前 歹m癌)、印巢或結腸腫瘤、小細胞性肺癌、惡性腸阻塞、 副神經節瘤、腎癌、皮膚癌、神經母細胞瘤、嗜鉻細胞瘤、 甲狀腺趙質癌、骨髓瘤、淋巴瘤、霍奇金氏陶咖㈣及非 97051.doc -26- 200529883 霍奇金氏(non-Hodgkins)淋巴瘤、骨腫瘤及其轉移症,以及’· 自體免疫或發炎性病症,例如類風濕性關節炎、葛瑞夫兹. 氏病或其它發炎性眼部疾病。 ’ 車乂仫地,本發明之微粒及組合物可用於治療肢端肥大症 及癌症,例如庫欣氏病或症候群,類癌。 可於標準動物測試或臨床試驗中測試本發明之微粒及組 合物之特性。 本發明之微粒及組合物具有良好耐受性。 本發明之化合物歷經數週(例如4週至6個月)自本發明之籲 微粒及自本發明之組合物中釋放。 本發明之組合物之適當劑量當然將(例如)視待治療病況 (例如疾病類型或抗藥性)、所使用藥物、所需之效果及投藥 模式而定。 一般而言’以非經腸投藥方式於每月每次注射約〇.2至約 100 mg(例如0.2至約35 mg,較佳為約3至約100 mg)之本發 明化合物或以每月每公斤動物體重約〇 〇3至約丨.2 (例如 _ 約0.03至約0.3 mg)之劑量投藥可得到滿意之結果。因而, 對於患者之適當每月劑量為約〇·3 mg至約1〇〇 mg之本發明 化合物,例如式III化合物,例如化合物A。 【實施方式】 下述貫例用於闡明本發明,而並無任何限制。 實例1至4 :微粒 使水(D,L -丙父醋-共-乙交g旨)溶於如表1中所指明之量的 二氯曱烧中。然後將該聚合物溶液加至化合物A雙羥萘酸鹽 97051.doc -27- 200529883 中。以Ultra-Turrax處理所得懸浮液1分鐘。 將2 L水加熱至90°C。加溫期間,依次加入如表1中所給 出之量的磷酸鹽。於90°C,加入如表1中所給出之量之PVA 1 8-88。然後將所得溶液冷卻至20°C且以水填補至所需要之 體積。 混合聚合物/藥物懸浮液及PVA/磷酸鹽溶液,於真空下蒸 發二氣甲烷且濾出微粒,以水(WBU)洗滌且於室溫、減壓 條件(0.1 mbar)下乾燥。 表1(量以公克計) 實例1 實例2a 實例2b 實例3 實例4 星狀聚合物:聚(D,L-丙交酯-共-乙交酯),具有約50,000道爾頓之 Mw 丙交酯:乙交酯莫耳比率50:50 2.266 2.555 2.555 1.977 2.555 二氣甲烷 15.035 22.603 22.603 13.117 16.926 化合物A雙羥萘酸鹽 1.734 1.4451 1.4452 2.023 1.445 聚乙烯醇(PVA)18-88 15.00 15.00 15.00 15.00 15.00 ΚΗ2Ρ〇4 5.43 5.43 5.43 5.43 5.43 無水 Na2HP04 22.71 22.71 22.71 22.71 22.71 水(WBU) 添加 添加 添加 添加 添加 3.01 3.01 3.01 3.01 3.01 1粒子尺寸分佈:χ90<15微米 2粒子尺寸分佈:χ90<3微米 97051.doc -28- 200529883 實例5至8 :微粒 表2(量以公克計) 實例5 實例6 實例7 實例8 星狀聚合物:聚(D,L-丙交酯-共-乙交 酯),具有約50,000道爾頓2MW 丙交酯:乙交酯莫耳比率50:50 1.916 1.916 1.278 1.278 星狀聚合物:聚(D,L-丙交酯-共-乙交 酯),具有約16,500道爾頓2MW 丙交酯··乙交酯莫耳比率50:50 0.639 - 1.278 - Resomer RG 502H 丙交酯:乙交酯莫耳比率50:50 - 0.639 - 1.278 二氣甲烷 16.926 16.926 16.926 16.926 化合物A雙羥萘酸鹽 1.445 1.445 1.445 1.445 聚乙烯醇(PVA)18-88 15.00 15.00 15.00 15.00 KH2PO4 5.43 5.43 5.43 5.43 無水 Na2HP〇4 22.71 22.71 22.71 22.71 水(WBU) 添加 3.0 1 添加 3.0 1 添加 3.0 1 添加 3.0 1 使該等聚合物溶於如表2中所指明之量之二氣甲烷中。然 後將該聚合物溶液加至化合物A雙羥萘酸鹽中。以 Ultra-Turrax處理所得懸浮液1分鐘。 將2 L水加熱至90°C。加溫期間,依次加入如表2中所給 出之量之磷酸鹽。於90°C,加入如表2中所給出之量之PVA 1 8-88。然後將所得溶液冷卻至20°C且以水填補至所需要之 體積。 混合聚合物/藥物懸浮液及PVA/磷酸鹽溶液,於真空下蒸 發二氣甲烷且濾出微粒,以水(WBU)洗滌且於室溫、減壓 97051.doc -29- 200529883 條件(0.1 mbar)下乾燥。
實例10 ··媒劑組合物A至G 將CMC-Na、甘露醇及piur〇nic F68以表3中所給定之量於 磁力攪拌器劇烈攪拌下溶於約15 ml溫度約9〇t之熱去離 子水中。將所得澄清溶液冷卻至2〇t:且以去離子水填補至 20.0 ml 〇 表3 (量以公克計) A B c D E F G CMC-Na 0 0 0.05 0.14 0.28 0.35 0.40 甘露醇 0 1.04 0.99 0.90 0.76 0.74 0.68 Pluronic F68 ().04 0.04 0.04 0.04 0.04 0.04 10.04 媒劑E較佳用於雙腔室注射針筒中。 實例10 : 於6R小瓶中’將384叫或576 mg實例2a&2b之微粒懸浮 於2.0 ml組合物D之媒劑中。藉由搖動約3〇秒使該等懸浮液 均質化。毋需任何流出可使用2〇號針頭注射該經復原之懸 浮液。 實例11 : 使240 mg實例2a及2b之微粒於1 ml媒劑組合物F中復 原’以螺旋槳式攪拌器於4〇〇 rprn均質化1至12小時,且然 後於Telstar凍乾機中冷凍乾燥。 1 ml純水(WBU)復原該等微粒凍晶產生微粒之快速及良 好潤濕作用’毋需任何流出可使用2〇號針頭注射該等微粒。 實例12 ··化合物a自微粒中之釋放 將實例2a及2b之微粒以對應於每公斤兔子4 mg化合物a 97051.doc -30- 200529883 之量懸浮於1 ml媒劑組合物D中。藉由搖動約30秒使懸浮液 均質化且使用18號針頭注射至研究起始之前體重約3 kg之 兔的左側腓腸肌中。 經55天後收集血液樣品(約1 ml)。使用ELIS A方法測定化 合物A之血漿含量。表4中給出投藥後化合物A之平均濃 度。吾等發現平均AUC(0-55天)對實例2a為454 ng/ml,對實 例 2b為 296 ng/ml。 表4(平均濃度以ng/ml計) 投藥後時間[天] 0 0.021 0.042 0.083 0.167 0.25 1 2 3 6 9 實例2a之微粒 0 9.10 9.72 10.18 8.67 6.29 4.61 4.67 4.75 7.45 3.46 實例2b之微粒 0 0 0 0 0 0 0 0 0.87 1.06 0.65 投藥後時間[天] 13 16 20 23 27 30 34 37 41 44 48 55 實例2a之微粒 2.10 1.65 4.62 8.95 16.39 18.71 26.97 12.50 7.33 5.52 4.04 2.25 實例2b之微粒 0 0 7.93 15.71 18.74 16.04 8.94 6.45 3.75 2.17 1.23 0.68 97051.doc -31 -
Claims (1)
- 200529883 十、申請專利範圍: 1 · 一種微粒’其包含含有式〗胺基酸序列之生長抑素類似物: -(D/L)Trp-LYs.X1.x2- ι 其中’ Χι為式(a)或⑻基團NH—~c〇h— CH, 其中Ri為視情況經取代之苯基, R2為 _Zl-CH2_Ri、-CHrCO-O-CH其中冗!為0或S,且 X2為於Ca側鏈上具有一芳族殘基之…胺基酸,或為選自 以下各物之胺基酸單元:Dab、Dpr、Dpm、His、(Bzl) HyPro、噻吩基_Ala、環己基-Ala及第三丁基_Au,該序 列之Lys殘基對應於天然生長抑素^之“,殘基; 該生長抑素類似物為游離形態、鹽形態或經保護形態且 欲入聚合物基質中。 2·如請求項1之微粒,其中該生長抑素類似物為以游離形 態、鹽形態或經保護形態之式II]t化合物·· 97051.doc 200529883其中,C-2處之組態為(R)或(S)或其混合物,且 其中R為NRlR2-C2-6伸烧基或脈基-C2-6伸烧基,且Rl及R2 各自獨立地為hsCm烷基。 3.如請求項1或2之微粒,其中該生長抑素類似物為雙羥萘 酸鹽形態。 4·如前述請求項中任一項之微粒,其中該聚合物基質包含 線形或分枝狀聚丙交醋-共-乙交醋。 5·如前述請求項中任一項之微粒,其中該聚合基質包含至 少兩種不同的聚合物。 6 · 8. 9. 士 m述明求項中任一項之微粒,其進一步包含界面活性 劑、孔隙率影響劑及/或驗式鹽。 -種醫藥組合物,纟包含如前述請求項中任一項之微 及含濕潤劑之基於水的媒劑。 ::f求項7之組合物,其中該濕潤劑包含泊洛沙姆及/或 衣氧乙烷-山梨糖醇-脂肪酸酯。 如請求項7或8中任一頊之細人从 ^ 劑。 員之、、且5物,其中該媒劑包含張 10·如請求項7或 劑0 8中任一項之組合物 其中該媒劑包含增黏 97051.doc 200529883 η· —種套組,其包含如請求項!至6中任一項之微粒及基於 水之媒劑。 12· —種如請求項1至6中任一項之微粒或如請求項7至1〇中 任一項之醫藥組合物之用途,其用於製備供治療具有勺 含GH及/或IGF-1分泌過量或與此相關之病原學之 、 疾病或 病症用的醫藥品。 97051.doc 200529883 七、指定代表圖: (一) 本案指定代表圖為:(無) (二) 本代表圖之元件符號簡單說明: 八、本案若有化學式時,請揭示最能顯示發明特徵的化學式: -(D/L)Trp-LYs-X!-X2- I 97051.doc
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| MY158342A (en) * | 2003-11-14 | 2016-09-30 | Novartis Ag | Pharmaceutical composition |
| EP2359809B1 (en) * | 2005-12-22 | 2019-08-14 | Novartis AG | Sustained release formulation comprising octreotide and two or more polylactide-co-glycolide polymers |
| KR100816065B1 (ko) * | 2006-11-27 | 2008-03-24 | 동국제약 주식회사 | 초기 방출억제 특성이 우수한 서방출성 마이크로캡슐의제조방법 및 이에 의해 제조되는 마이크로캡슐 |
| EP3115038A1 (en) * | 2007-05-18 | 2017-01-11 | DURECT Corporation | Improved depot formulations |
| AR066677A1 (es) * | 2007-05-24 | 2009-09-02 | Novartis Ag | Formulacion de pasireotida. composicion farmaceutica para liberacion prolongada. microparticulas. |
| PT2247282E (pt) * | 2008-01-30 | 2014-11-11 | Novartis Ag | Formulação de libertação controlada compreendendo octreotido e três polímeros lineares de polilactido-coglicolido |
| US9629798B2 (en) * | 2008-04-03 | 2017-04-25 | Mallinckrodt Pharma Ip Trading D.A.C. | Hemostatic microspheres |
| JP5721624B2 (ja) | 2008-07-08 | 2015-05-20 | ノバルティス アーゲー | 内因性高インスリン血症性低血糖症の治療のためのパシレオチドの使用 |
| US20100151033A1 (en) * | 2008-12-15 | 2010-06-17 | Novartis Ag | Octreotide depot formulation with constantly high exposure levels |
| US8815971B2 (en) | 2008-12-22 | 2014-08-26 | ATRP Solutions, Inc. | Control over controlled radical polymerization processes |
| US8822610B2 (en) | 2008-12-22 | 2014-09-02 | ATRP Solutions, Inc. | Control over controlled radical polymerization processes |
| US8173750B2 (en) | 2009-04-23 | 2012-05-08 | ATRP Solutions, Inc. | Star macromolecules for personal and home care |
| US9783628B2 (en) | 2009-04-23 | 2017-10-10 | ATRP Solutions, Inc. | Dual-mechanism thickening agents for hydraulic fracturing fluids |
| WO2010123574A1 (en) | 2009-04-23 | 2010-10-28 | Atrp Solutions Inc | Star macromolecules for personal and home care |
| US9587064B2 (en) | 2010-12-08 | 2017-03-07 | ATRP Solutions, Inc. | Salt-tolerant star macromolecules |
| WO2013131879A1 (en) | 2012-03-07 | 2013-09-12 | Novartis Ag | New application for pasireotide |
| JP6294885B2 (ja) | 2012-08-30 | 2018-03-14 | エーティーアールピー ソリューションズ インコーポレイテッドATRP Solutions,Inc. | 星形高分子、星形高分子組成物および星形高分子の製造方法 |
| EP2951220B1 (en) | 2013-02-04 | 2020-11-25 | Pilot Polymer Technologies, Inc. | Salt-tolerant star macromolecules |
| EP2986278A1 (en) | 2013-03-11 | 2016-02-24 | DURECT Corporation | Injectable controlled release composition comprising high viscosity liquid carrier |
| TW201605488A (zh) * | 2013-10-15 | 2016-02-16 | 大塚製藥股份有限公司 | 用以預防及/或治療多囊腎病之藥物 |
| CN107075015B (zh) | 2014-07-03 | 2019-08-23 | 派诺聚合物技术公司 | 表面活性剂-相容性星形大分子 |
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| HU221294B1 (en) * | 1989-07-07 | 2002-09-28 | Novartis Ag | Process for producing retarde compositions containing the active ingredient in a polymeric carrier |
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