JP2005515958A - Synthesis of panclastatin prodrug - Google Patents

Synthesis of panclastatin prodrug Download PDF

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JP2005515958A
JP2005515958A JP2002583375A JP2002583375A JP2005515958A JP 2005515958 A JP2005515958 A JP 2005515958A JP 2002583375 A JP2002583375 A JP 2002583375A JP 2002583375 A JP2002583375 A JP 2002583375A JP 2005515958 A JP2005515958 A JP 2005515958A
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phosphate
pancratistatin
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アール ペティット ジョージ
オー アール アール ブライアン
ダッキー シルビア
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アリゾナ ボード オブ リーゼンツ
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Abstract

(+)パンクラチスタチンをテトラアセテイトで選択的に保護し、保護されたパンクラチスタチンをジベンジルクロロフォスフェイトでリン酸化し、その後、2当量のナトリュームメトキシドと反応させてジナトリューム(+)パンクラチスタチンフォスフェイトを生じながら、ナトリュームメトキシドでアセテイトとベンジル保護基を分割することによってパンクラチスタチンプロドラッグを合成する。  (+) Pancratistatin is selectively protected with tetraacetate, and the protected pancratistatin is phosphorylated with dibenzyl chlorophosphate and then reacted with 2 equivalents of sodium methoxide to give dinatrum (+ ) Synthesize a panclastatin prodrug by cleaving the acetate and benzyl protecting groups with sodium methoxide while producing panclastatin phosphate.

Description

発明の詳細な説明Detailed Description of the Invention

本件は2001年4月18日に提出したSerial No.60/284,717のUS特許出願に基づく。
(序文)
本発明は、概して(+)−パンクラチスタチンフォスフェイトプロドラッグと14金属およびそのアンモニュームカチオン誘導体の新しい有効な合成の発見に関する。図1に2aで表示したパンクラチスタチンフォスフェイトプロドラッグは水に優れた可溶性を有し、従ってヒトのガンの治療に容易に投与できることが発見された。
この研究は、一部Division of Cancer Treatment,National Cancer Institute,DHHSによって授与されたOutstanding Investigator Grant CA−44344−01−11によっている。合衆国政府はこの発明に権利を有する。
This case was reported in Serial No. filed on April 18, 2001. Based on US patent application 60 / 284,717.
(preface)
The present invention relates generally to the discovery of a new and effective synthesis of (+)-pancratistatin phosphate prodrug and 14 metals and their ammonium cation derivatives. It has been discovered that the pancratistatin phosphate prodrug, labeled 2a in FIG. 1, has excellent solubility in water and can therefore be easily administered for the treatment of human cancer.
This work is in part by Outstanding Investigator Grant CA-44344-01-11 awarded by Division of Cancer Treatment, National Cancer Institute, DHHS. The United States government has rights to this invention.

(発明の背景)
制ガン剤フェナンスリドン(+)−パンクラチスタチン(1a)はHawaian Hymenocallis(公式にはPancratium)littoralisのバルブから遊離された(Pettit et al.,1984a,Journal of the Chemical Society,Chemical Communications,1693;Pettit et al.,1984b,Journal of Natural Products,47,1018)。その構造はNMR分光法によって決定され、その7−メトキシ誘導体(1b)のX−線結晶分析によって確認された。
(Background of the Invention)
The anticancer drug phenanthridone (+)-pancratistatin (1a) was released from the valve of the Hawaian Hymenocallis (formally Pancranium) litoritalis (Pettet et al., 1984a, Journal of the Chemical et al. 93). , 1984b, Journal of Natural Products, 47, 1018). Its structure was determined by NMR spectroscopy and confirmed by X-ray crystallographic analysis of its 7-methoxy derivative (1b).

次に、パンクラチスタチン(1a)は、ガン細胞ラインのU.S.National Cancer Institute(NCI)パネルに対して包含するin vtro(生体外)における強力なガン細胞成長抑制活(Pettit et al.,1986,Journal of Natural Products,49,995;1993 Journal of Natural Products,56,1682)および一連のin vivo(生体内)実験的ガンシステムを発揮することが発見された。関係分野の見込みはある範囲のRNAウイルスに対するその活性を包含する(Gabrielsen et al.,1992,Journal of Natural Products,55,1569)。比較的低い自然発生量(乾燥バルブ〜0.039%)および臨床的に有用な抗ガン剤としてのその増大するポテンシャルにより、パンクラチスタチンは全合成に対する重要なターゲットとなった。(±)−パンクラチスタチンの最初の全合成は1989年に報告された(Danishefsky and Yon Lee,1989,Journal of the American Chemical Society 111,4829)。天然の(+)−パンクラチスタチン(1a)の六つの立体特異性の合成がその後完成された(Tian et al.,1995,Journal of the American Chemical Society,117,3643;Trost and Pulley,1995,Journal of the American Chemical Society,117,10143;Hudlicky et al.,1996,Journal of the American Chemical Society,118,10752;Doyle et al.,1997,Tetrahedron,53,11153;Magnus and Sebhat,1998,Tetrahedron,54,15509;Petit et al.,2000,Journal of Organic Chemistry,in prepration)。一方、いくつかの部分合成が記載された(Lopes et al.,1992,Tetrahedron Letters,33,6775;Angle and Louis,1993,Tetrahedron Letters,34,4751;Grubb et al.,1999,Tetrahedron Letters,40,2691)。  Next, pancratistatin (1a) is a U.S. cancer cell line. S. Potent cancer cell growth inhibitory activity in vitro (Petit et al., 1986, Journal of Natural Products, 49, 995; 1993 Journal of Natural Products 56) inclusive against the National Cancer Institute (NCI) panel. 1682) and a series of in vivo experimental cancer systems have been discovered. The promise of the relevant field encompasses its activity against a range of RNA viruses (Gabrielsen et al., 1992, Journal of Natural Products, 55, 1569). Due to its relatively low naturally occurring amount (dry valve ˜0.039%) and its increasing potential as a clinically useful anticancer agent, pancratistatin has become an important target for total synthesis. The first total synthesis of (±) -pancratisatin was reported in 1989 (Danishefsky and Yon Lee, 1989, Journal of the American Chemical Society 111, 4829). The synthesis of the six stereospecificities of natural (+)-pancratistatin (1a) was subsequently completed (Tian et al., 1995, Journal of the American Chemical Society, 117, 3643; Trost and Pulley, 1995, Journal of the American Chemical Society, 117, 10143; Hudricky et al., 1996, Journal of the American Chemical Society, 118, 10752; Doyle et al., 1997. 54, 15509; Peti et al., 2000, Journal of Organic Chemistry, in prepration). Meanwhile, some partial syntheses have been described (Lopes et al., 1992, Tetrahedron Letters, 33, 6775; Angle and Louis, 1993, Tetrahedron Letters, 34, 4751; Grubb et al., 1999, Tetrahedron 40 et al. , 2691).

パンクラチスタチン(1a)の臨床的開発は以前はその水溶性の低さ(53μg/ml)によって妨害された。この問題は、著しく改良された水溶特性を発揮したフォスフェイトプロドラッグの合成を開発することによって解決され(Pettit et al.,1995a,Anti−Cancer Drug Design,10,243)、マウスP388リンパ性白血病細胞に対し均等な活性を発揮することが発見された。おそらく、ヒトの非時異性のホスホターゼはフォスフェイトプロドラッグを加水分解し続いて(+)パンクラチスタチン(1a)を放出するので、フォスフェイトの結合もまた生体内システムに対して有益である。比較的不安定なリン酸化剤ジベンジル−(N,N−ジイソプロピルアミド)−フォスフィンは、我々がフォスフェイト(2a)の最初の合成に使用したものであるが、決して望ましくなく、それ自体可変を示すリン酸化反応を生じるので(価値のある出発物質の回収なしに(5)の収率0〜91%)、我々はより有効なアプローチを調査した。ここに、パンクラチスタチンプロドラッグ(2a)のより簡単な合成を記載する。この新しい合成は前臨床現象に対する量の面で純粋薬物(2a)を提供するのに使用されるだろう。更に、ヒトのガン細胞の生長および溶解性(水に対する)についての効果を評価するために、一連のフォスフェイト金属とアンモニュームカチオン塩誘導体(2b−o)を製造した。  The clinical development of pancratistatin (1a) was previously hampered by its low water solubility (53 μg / ml). This problem has been solved by developing the synthesis of phosphate prodrugs that exerted significantly improved water-soluble properties (Pettit et al., 1995a, Anti-Cancer Drug Design, 10, 243) and mouse P388 lymphocytic leukemia. It has been discovered that it exhibits an equivalent activity on cells. Presumably, the binding of phosphate is also beneficial for in vivo systems, since human non-isomeric phosphotases hydrolyze phosphate prodrugs and subsequently release (+) pancratistatin (1a). The relatively labile phosphorylating agent dibenzyl- (N, N-diisopropylamide) -phosphine, which we used in the initial synthesis of phosphate (2a), is never desirable and shows itself variable Since a phosphorylation reaction occurred (0-91% yield of (5) without recovery of valuable starting material), we investigated a more effective approach. Here, a simpler synthesis of panclastatin prodrug (2a) is described. This new synthesis will be used to provide pure drug (2a) in terms of quantity for preclinical phenomena. In addition, a series of phosphate metals and ammonium cation salt derivatives (2b-o) were prepared to evaluate the effects on growth and solubility (to water) of human cancer cells.

以下に見られるこれらの目的は、以下の詳細な記載から容易に認められるように、著しく予期されない態様において本発明によって容易に達成される。  These objectives found below are readily achieved by the present invention in a highly unexpected manner, as will be readily appreciated from the following detailed description.

(好ましい具体例の詳細な説明)
(+)−パンクラチスタチン(1a)は前記のごとくHymenocallis littoralisから単離した(Pettit et al.,1995b,Journal of Natural Products,58,37)。無水酢酸、ピリジン、ジベンジルフォスファイト、N−エチルジイソpロピルアミンおよび10%パラジューム炭素触媒はLancaster Synthesis,Inc.から購入した。四塩化炭素、4−ジメチルアミノピリジン、無水硫酸マグネシュウム(MgSOジヒドロゲンフォスフェイトカリューム、フォスフォモリブデン酸および酢酸亜鉛二水加物はSigma−Aldrich Chemical Co.から購入した。ナトリュームメトキシド、水酸化リチューム一水加物、ピペラジン(無水)およびモルフォリンはAcros Organicsから購入した。酢酸カルシュームおよび酢酸マンガンはFisher Scientific Co.から、酢酸マグネシュームキニン、キニジンおよびイミダゾールはJ.T.Baker Chem.から購入した。炭酸ルビジュームおよび炭酸セシュームはAlfa Products,Inc.から、そして酢酸カリュームはMallinckrodtから供給された。溶剤はすべて使用前に再蒸留し、必要に応じ乾燥した。水溶液の溶剤抽出物は硫酸マグネシュームで乾燥した。金属塩の1.0M溶液は蒸留水で、アミンの1.0M溶液は乾燥メタノールで製造した。
(Detailed description of preferred embodiments)
(+)-Panclatistatin (1a) was isolated from Hymenocallis littoralis as described above (Pettit et al., 1995b, Journal of Natural Products, 58, 37). Acetic anhydride, pyridine, dibenzyl phosphite, N-ethyldiisopropylamine and 10% paradium carbon catalyst are available from Lancaster Synthesis, Inc. Purchased from. Carbon tetrachloride, 4-dimethylaminopyridine, anhydrous magnesium sulfate (MgSO 4 dihydrogen phosphate calf, phosphomolybdic acid and zinc acetate dihydrate were purchased from Sigma-Aldrich Chemical Co. sodium methoxide, hydroxide Rituum monohydrate, piperazine (anhydrous) and morpholine were purchased from Acros Organics, calcium acetate and manganese acetate were purchased from Fisher Scientific Co., and magnesium quinine acetate, quinidine and imidazole were purchased from JT Baker Chem. Rubidium carbonate and sesame carbonate are supplied by Alfa Products, Inc. and caloric acetate is supplied by Mallinckrodt. All solvents were redistilled before use and dried as needed, solvent extracts of aqueous solutions were dried with magnesium sulfate, 1.0M metal salt solution was distilled water, 1.0M amine solution was dry methanol. Manufactured with.

反応はすべて特に示さない限り窒素気中で行われ、その進行はAnaltechシリカゲルGHLF Uniplates(長−および短−波UV下で見える)を使用する薄層クロマトグラフィによって確認され、そしてフォスフォモリブジック酸試薬のエタノール溶液中で行われた。コラムンクロマトグラフィはE.Merckからシリカゲル60(230〜400メッシュ)で行われた。Sephadex R G−10は(使用前に)1N苛性ソーダ、水、1N酢酸で洗い、最後にpHが中性まで水洗した。  All reactions are carried out in nitrogen unless otherwise indicated, and the progress is confirmed by thin layer chromatography using Analtech silica gel GHLF Uniplates (visible under long- and short-wave UV) and phosphorophilic acid reagent In ethanol solution. Columnon chromatography Performed on Merck from silica gel 60 (230-400 mesh). Sephadex® G-10 was washed with 1N caustic soda, water, 1N acetic acid (before use) and finally with water until the pH was neutral.

融点はすべてElectrothermalデジタル融点装置モデルIA9200で測定した。補正せず。光学回転値はPerkin Elmer241偏光計を用いて記録した。IRスペクトルはNicolet FTIRモデルMX−1装置から記録した。EIMSスペクトルはMAT312マススペクトロメーターで得た。高−および低−解像FABスペクトルはグリセロール−トリグリセロールマトリックスを用いてKratos MS−50マススペクトロメーター(Midwest Center for Mass Spectrometry,University of Nebraska,Lincoln,NE)で得られた。H−,13C−および31P−NMRスペクトルはVarian Gemini300,400または500MHz装置で記録した。元素分析はGalbraith Laboratories,Inc.(Knoxville,TN)によって測定した。All melting points were measured with an Electrothermal digital melting point model IA9200. Without correction. Optical rotation values were recorded using a Perkin Elmer 241 polarimeter. IR spectra were recorded from a Nicolet FTIR model MX-1 instrument. EIMS spectra were obtained on a MAT312 mass spectrometer. High- and low-resolution FAB spectra were obtained on a Kratos MS-50 mass spectrometer (Midwest Center for Mass Spectrometry, University of Nebraska, Lincoln, NE) using a glycerol-triglycerol matrix. 1 H-, 13 C- and 31 P-NMR spectra were recorded on a Varian Gemini 300, 400 or 500 MHz instrument. Elemental analysis was performed by Galbraith Laboratories, Inc. (Knoxville, TN).

1,2,3,4−O−テトラアセトキシ−パンクラチスタチン(4)
次の方法は我々の以前の方法に対し有用な改良を表す(Pettit et al.,1995a,Anti−Cancer Drug Design,10,243)。ピリジン(50ml)中(+)パンクラチスタチン(1a,純度82%、8.6g,21.7mmol)の攪拌溶液に室温において無水酢酸(45ml,0.48mol)と4−ジメチルアミノピリジン(200mg,1.6mmol)を加えた。16時間攪拌の後、混合物に氷(100ml)を加え、更に1時間攪拌を続けた。得られた混合物をジクロロエタン(2x100ml)で抽出し、そして混合した有機抽出物は乾燥し、ろ過し、真空で乾固した。褐色油状の残留物(14.3g)にピリジン(80ml)と水(40ml)とを加え、その混合物を1時間還流下で加熱した。氷(50ml)を加え、冷却した混合物をジクロロメタン(2x100ml)で抽出した。混合した有機抽出物は乾燥し、ろ過し、真空で乾燥した。得られた残留物は、ジクロロメタン中1.5%メタノールで抽出するシリカゲル上カラムクロマトグラフィによって精製して白色無定形の粉末を得た。これをエタノールから再結晶して表題の化合物を無色針状物として得た(4、7.1g,66%);m.p.240℃{m.p.lit.(Pettit et al.,1995a Anti Cancer Drug Design,10,243)243−246℃}:[α] 27+31.5°(c1.04,DCM){[α] lit.(pettit et al.,1995a,Anti−Cancer Drug Design,10,243)+30.4°(c0.72,DCM)}.得られたIR,H−NMRおよび13C−NMRは前に報告した通りである。
1,2,3,4-O-tetraacetoxy-pancratistatin (4)
The following method represents a useful improvement over our previous method (Pettit et al., 1995a, Anti-Cancer Drug Design, 10, 243). To a stirred solution of (+) pancratistatin (1a, 82% purity, 8.6 g, 21.7 mmol) in pyridine (50 ml) at room temperature with acetic anhydride (45 ml, 0.48 mol) and 4-dimethylaminopyridine (200 mg, 1.6 mmol) was added. After stirring for 16 hours, ice (100 ml) was added to the mixture and stirring was continued for an additional hour. The resulting mixture was extracted with dichloroethane (2 × 100 ml) and the combined organic extracts were dried, filtered and evaporated to dryness in vacuo. To the brown oily residue (14.3 g) was added pyridine (80 ml) and water (40 ml) and the mixture was heated at reflux for 1 hour. Ice (50 ml) was added and the cooled mixture was extracted with dichloromethane (2 × 100 ml). The combined organic extracts were dried, filtered and dried in vacuo. The resulting residue was purified by column chromatography on silica gel extracted with 1.5% methanol in dichloromethane to give a white amorphous powder. This was recrystallized from ethanol to give the title compound as colorless needles (4, 7.1 g, 66%); m. p. 240 ° C. {m. p. lit. (Pettit et al., 1995a Anti Cancer Drug Design, 10, 243) 243-246 ° C.}: [α] D 27 + 31.5 ° (c 1.04, DCM) {[α] D lit. (Pettit et al., 1995a, Anti-Cancer Drug Design, 10, 243) + 30.4 ° (c 0.72, DCM)}. The obtained IR, 1 H-NMR and 13 C-NMR are as reported previously.

1,2,3,4−O−テトラアセトキシ−7−O−ジベンジルオキシフォスフォリル−パンクラチスタチン(5)
−30℃(エチレングリコール/ドライアイス)に冷却したアセトニトリル(30ml)中1,2,3,4−O−テトラアセトキシ−パンクラチスタチン(4,2.60g,5.27mol)の溶液に、四塩化炭素(2.6ml,26.9mmol),N−エチルジイソプロピルアミン(2.0ml,11.6mmol)と4−ジメチルアミノピリジン(71mg,0.58mmol)を加えた。続いてジベンジルフォスファイト(1.80ml,8.15mmol)を徐々にて滴下添加し、混合物を3時間攪拌した。反応はカリュームジハイドロゼンフォスフェイトの水溶液(0.5M,50ml)の添加で終わり、室温で30分攪拌した。得られた混合物はジクロロメタン(2x50ml)で抽出し、混合した有機抽出物は乾燥し、ろ過し、溶媒は真空で蒸発した。得られた黄色の油は、低温(4℃)において、シリカゲル上カラムクロマトグラフィによりそしてジクロロメタン中0.8%メタノールで抽出して精製した。与えられた処置により、出発物質1,2,3,4−O−テトラアセトキシ−パンクラチスタチン(4,0.30g,11%)を、続いて無色の結晶性固体としてそのジベンジルフォスフェイト誘導体(5,3.44g,87%)を回収した。
m.p.119℃[m.p.lit.(Pettit et al.,1995a,Anti−Cancer Drug Design,10,243)119−121℃];[α]D27+59.3°(c1.33,DCM){[α]D33lit.(Pettit et al.,1995a,Anti−Cancer Drug Design,10,243)+69.1°(c0.89,DCM)};vmax(KBr disc)2910w,1755s,1674s,1485s,1373s,1221s,1037b,871w,738w,493w cm−1;δ/ppm(300MHz,CDCl)2.04(3H,s,OAc),2.06(3H,s,OAc),2.07(3H,s,OAc),2.16(3H,s,OAc),3.40(1H,dd,J3,13Hz,H−10b),4.26(1H,dd,J11,13Hz,H−4a),5.13(1H,dd,J3,11Hz,H−4),5.20(1H,t,J3 Hz,H−2),5.23(1H,dd,J7,12Hz,CHPh),5.26(1H,dd,J7,12Hz,CHPh),5.31(1H,dd,J7,12Hz,CHPh),5.41(1H,dd,J7,12Hz,CHPh),5.43(1H,t,J3 Hz,H−3),5.54(1H,t,J3 Hz,H−1),5.92(1H,d,J1 Hz,OCHO),5.95(1H,d,J1 Hz,OCHO),6.10(1H,bs,5−NH),6.43(1H,s,H−10),7.30−7.42(10H,bm,2x Ph);δc/ppm(125MHz,CDCl)170.1(C−1においてC=O),169.7(C−3においてC=O),169.0(C−4においてC=O),168.2(C−2においてC=O),162.6(C−6),152.4(C−9),139.3(d,JPC4Hz,C−8),136.0(d,JPC8Hz,C of Ph),135.9(d,JPC8Hz,C of Ph),134.1(d,JPC7Hz,C−7),133.0(C−10a),128.42(CH of Ph),128.37(CH of Ph),128.3(CH of Ph),127.9(CH of Ph),127.7(CH of Ph),117.0(C−6a),102.7(OCHO),101.5(C−10),71.6(C−4),70.1(d,JPC5Hz,CHPh),70.0(d,JPC6Hz,CHPh),67.6(C−2),66.7(C−3),66.4(C−1),47.6(C−4a),40.3(C−10b),20.76(C−2においてCH),20.73(C−3においてCH3),20.67(C−4においてCH),20.5(C−1においてCH);δ/ppm(200MHz,CDCl,85%HPOに対して)−6.61(s,H分離);m/z(EI)493[M−P(O)(OBn),10%],271(35),91(40),61(40,44(100).
1,2,3,4-O-tetraacetoxy-7-O-dibenzyloxyphosphoryl-pancratistatin (5)
To a solution of 1,2,3,4-O-tetraacetoxy-pancratistatin (4,2.60 g, 5.27 mol) in acetonitrile (30 ml) cooled to −30 ° C. (ethylene glycol / dry ice) Carbon chloride (2.6 ml, 26.9 mmol), N-ethyldiisopropylamine (2.0 ml, 11.6 mmol) and 4-dimethylaminopyridine (71 mg, 0.58 mmol) were added. Subsequently, dibenzyl phosphite (1.80 ml, 8.15 mmol) was slowly added dropwise and the mixture was stirred for 3 hours. The reaction was completed by the addition of an aqueous solution of calum dihydrozen phosphate (0.5 M, 50 ml) and stirred at room temperature for 30 minutes. The resulting mixture was extracted with dichloromethane (2 × 50 ml), the combined organic extracts were dried, filtered and the solvent was evaporated in vacuo. The resulting yellow oil was purified at low temperature (4 ° C.) by column chromatography on silica gel and extraction with 0.8% methanol in dichloromethane. Given the treatment, the starting material 1,2,3,4-O-tetraacetoxy-pancratistatin (4,0.30 g, 11%) was subsequently obtained as its colorless crystalline solid as its dibenzyl phosphate derivative. (5,3.44 g, 87%) was recovered.
m. p. 119 ° C. [m. p. lit. (Pettit et al., 1995a, Anti-Cancer Drug Design, 10, 243) 119-121 ° C.]; [α] D 27 + 59.3 ° (c 1.33, DCM) {[α] D 33 lit. (. Pettit et al, 1995a, Anti-Cancer Drug Design, 10,243) + 69.1 ° (c0.89, DCM)}; v max (KBr disc) 2910w, 1755s, 1674s, 1485s, 1373s, 1221s, 1037b , 871 w, 738 w, 493 w cm −1 ; δ H / ppm (300 MHz, CDCl 3 ) 2.04 (3H, s, OAc), 2.06 (3H, s, OAc), 2.07 (3H, s, OAc), 2.16 (3H, s, OAc), 3.40 (1H, dd, J3, 13Hz, H-10b), 4.26 (1H, dd, J11, 13Hz, H-4a), 5. 13 (1H, dd, J3, 11 Hz, H-4), 5.20 (1H, t, J3 Hz, H-2), 5.23 (1H, dd, J 7, 12 Hz, CH A H B Ph), 5.26 (1 H, dd, J 7, 12 Hz, CH A H B Ph), 5.31 (1 H, dd, J 7, 12 Hz, CH C H D Ph), 5 .41 (1H, dd, J7, 12 Hz, CH C H D Ph), 5.43 (1 H, t, J3 Hz, H-3), 5.54 (1 H, t, J3 Hz, H-1), 5.92 (1H, d, J1 Hz, OCH A H B O), 5.95 (1 H, d, J1 Hz, OCH A H B O), 6.10 (1 H, bs, 5-NH), 6 .43 (1H, s, H- 10), 7.30-7.42 (10H, bm, 2x Ph); δc / ppm (125MHz, CDCl 3) (C = O in C-1) 170.1, 169.7 (C = O in C-3), 169.0 (C = O in C-4), 168.2 C = O in the C-2), 162.6 (C -6), 152.4 (C-9), 139.3 (d, J PC 4Hz, C-8), 136.0 (d, J PC 8 Hz, C of Ph), 135.9 (d, J PC 8 Hz, C of Ph), 134.1 (d, J PC 7 Hz, C-7), 133.0 (C-10a), 128.42 ( CH of Ph), 128.37 (CH of Ph), 128.3 (CH of Ph), 127.9 (CH of Ph), 127.7 (CH of Ph), 117.0 (C-6a), 102.7 (OCH 2 O), 101.5 (C-10), 71.6 (C-4), 70.1 (d, J PC 5 Hz, CH 2 Ph), 70.0 (d, J PC) 6 Hz, CH 2 Ph), 67.6 (C-2), 66.7 (C-3), 66.4 (C-1), 47.6 (C-4a), 40.3 (C-10b), 20.76 (CH 3 in C-2), 20.73 (CH3 in C-3), 20.67 (CH in C-4) 3 ), 20.5 (CH 3 in C-1); δ P / ppm (for 200 MHz, CDCl 3 , 85% H 3 PO 4 ) −6.61 (s, 1 H separation); m / z (EI) 493 [MP (O) (OBn) 2 , 10%], 271 (35), 91 (40), 61 (40, 44 (100).

ジナトリューム7−O−フォスフォリル−パンクラチスタチン(2a)
メタノール(50ml)中ジベンジルパンクラチスタチンフォスフェイト(5a,2.00g,2.66mmol)の溶液にナトリュームメトキシド(87mg,1.61mol)を加えた。混合物を室温で2時間攪拌し水(50ml)を加えた。この水溶性の混合物をジクロロメタン(5x50ml)で抽出し、混合した有機抽出物は乾燥し、ろ過し、真空で蒸発(加熱なし)して、白色粉末(1.8g)として租の脱アセチル化誘導体を得た。残渣は直ちにエタノール(50ml)に溶解し、10%Pd/C触媒(201mg)を加えた。混合物は1気圧の水素下で2時間攪拌し、フルートろ紙を通してろ過した。触媒はメタノール(50ml)で十分に洗い、ろ液は真空で蒸発(加熱なし)して租脱ベンジル化リン酸(6)を白色粉末(1,3g)として得た。m.p.195℃ dec.δ/ppm(300MHz,DO)6.70(1H,bs,H−10),5.96(1H,s,OCHO),5.93(1H,s,OCHO),4.29(1H,bs,H−1),4.03(1H,bs,H−2),3.87(1H,bs,H−3),3.74(1H,m,H−4),3.67(1H,t,J11 Hz,H−4a),3.00(1H,d,J12Hz,H−10b);m/z(FAB)406[(M+H),20%],405[M,25],154(100);C1416NO11P405.0461に対する計算値HRFAB405,0467.
Dinatrium 7-O-phosphoryl-pancratistatin (2a)
Sodium methoxide (87 mg, 1.61 mol) was added to a solution of dibenzyl pancratistatin phosphate (5a, 2.00 g, 2.66 mmol) in methanol (50 ml). The mixture was stirred at room temperature for 2 hours and water (50 ml) was added. This aqueous mixture was extracted with dichloromethane (5 × 50 ml) and the combined organic extracts were dried, filtered and evaporated in vacuo (no heating) to give the deacetylated derivative as a white powder (1.8 g). Got. The residue was immediately dissolved in ethanol (50 ml) and 10% Pd / C catalyst (201 mg) was added. The mixture was stirred for 2 hours under 1 atmosphere of hydrogen and filtered through flute filter paper. The catalyst was thoroughly washed with methanol (50 ml), and the filtrate was evaporated in vacuum (without heating) to obtain a debenzylated phosphoric acid (6) as a white powder (1, 3 g). m. p. 195 ° C. dec. δ H / ppm (300 MHz, D 2 O) 6.70 (1H, bs, H-10), 5.96 (1H, s, OCH A H B O), 5.93 (1 H, s, OCH A H B 2 O), 4.29 (1H, bs, H-1), 4.03 (1H, bs, H-2), 3.87 (1H, bs, H-3), 3.74 (1H, m , H-4), 3.67 (1H, t, J11 Hz, H-4a), 3.00 (1H, d, J12 Hz, H-10b); m / z (FAB) 406 [(M + H) + , 20%], 405 [M + , 25], 154 (100); calculated for C 14 H 16 NO 11 P 405.0461 HRFAB405, 0467.

リン酸(6)は直ちにメタノール(50ml)中で再蒸留し、ナトリュームメトキシド(361mg,6.73mol)を加えた。混合物は一夜攪拌し、それから真空(熱なし)で濃縮して白色のペースト(1.6g)を得た。残渣はSephadex R G−10カラムで精製し水で抽出した。蛍光精留物は混合し凍結乾燥してジ−ナトリュームパンクラチスタチンプロドラッグ(2a)をふわふわした粉末(1.1g,92%)として得た。m.p.206℃(dec);[α] 28+78.4°(c1.02,HO);vmaxKBr disc)3500−3000b,2360W,1670bs,1480s,1350w,1090s,980m,720m cm−1;δ/ppm(400MHz,DO)6.59(1H,s,H−10),5.96(1H,s,OCHO),5.87(1H,s,OCHO),4.39(1H,s,H−1),4.11(1H,bs,H−2),3.93(1H,bs,H−3),3.81(1H,bd,J9Hz,H−4),3.73(1H,bt,J12Hz,H−4a),3.00(1H,bd,J12Hz,H−10b);δ/ppm(100MHz,DO)171.2(C=O),152.3(C−9),139.1(C−8),137.3(C−7),135.3(C−10a),117.6(C−6a),102.4(O−CH−O),101.0(C−10),72.7(C−3),70.7(C−2),70.3(C−4),68.8(C−1),49.1(C−4a),40.7(C−10b);δ/ppm(162MHz,DO,85%HPOに対して)0.90(s,H分離);m/z(FAB)449(M,20%)427[(M−Na),20],154(100).Phosphoric acid (6) was immediately redistilled in methanol (50 ml) and sodium methoxide (361 mg, 6.73 mol) was added. The mixture was stirred overnight and then concentrated in vacuo (no heat) to give a white paste (1.6 g). The residue was purified with a Sephadex® G-10 column and extracted with water. The fluorescent rectified product was mixed and lyophilized to obtain di-natrium panclastatin prodrug (2a) as a fluffy powder (1.1 g, 92%). m. p. 206 ° C. (dec); [α] D 28 + 78.4 ° (c 1.02, H 2 O); v max KBr disc) 3500-3000b, 2360W, 1670bs, 1480s, 1350w, 1090s, 980m, 720m cm −1 Δ H / ppm (400 MHz, D 2 O) 6.59 (1H, s, H-10), 5.96 (1 H, s, OCH A H B O), 5.87 (1 H, s, OCH A) H B O), 4.39 (1H, s, H-1), 4.11 (1H, bs, H-2), 3.93 (1H, bs, H-3), 3.81 (1H, bd, J9 Hz, H-4), 3.73 (1H, bt, J12 Hz, H-4a), 3.00 (1H, bd, J12 Hz, H-10b); δ C / ppm (100 MHz, D 2 O) 171.2 (C = O), 152.3 (C 9), 139.1 (C-8 ), 137.3 (C-7), 135.3 (C-10a), 117.6 (C-6a), 102.4 (O-CH 2 -O) , 101.0 (C-10), 72.7 (C-3), 70.7 (C-2), 70.3 (C-4), 68.8 (C-1), 49.1 ( C-4a), 40.7 (C-10b); δ P / ppm (for 162 MHz, D 2 O, 85% H 3 PO 4 ) 0.90 (s, 1 H separation); m / z ( FAB) 449 (M <+> , 20%) 427 [(M-Na) <+> , 20], 154 (100).

パンクラチスタチンプロドラッグ(2b−o)の合成の一般的方法
パンクラチスタチンのリン酸誘導体の水性メタノール溶液(6,1mlの水またはメタノール中50mg)に、適当な金属塩(炭酸塩または酢酸塩)またはアミン遊離塩基の1.0M溶液(250μl)を加えた。溶液は濁り、混合物は6時間攪拌した。混合物は冷凍乾燥(または蒸発)して所望のプロドラッグ塩(2b−o)を得た。この塩を湿潤したメタノールおよび/またはジエチルエーテルと一緒に摩砕することによってさらに精製して未反応の出発物質を除いた。
ジリチューム パンクラチスタチン7−O−燐酸塩(2b):
黄色みがかった粉末(61mg);m.p.240℃ dec.:δ/ppm(300MHz,DO)6.62(1H,bs,H−10),600(1H,s,OCHO),5.90(1H,s,OCHAHO),4.44(1H,bs,H−1),4.15(1H,bs,H−2),3.97(1H,bs,H−3),3.80(2H,m,H−4,H−4a),3.07(1H,d,J12Hz,H−10b).
ジカリューム パンクラチスタチン7−O−燐酸塩(2c):
無色の粉末(66mg);m.p.280℃ dec.;δ/ppm(300MHz,DO)6.68(1H,bs,H−10),6.00(1H,s,OCHO),5.59(1H,s,OCHO),4.45(1H,bs,H−1),4.16(1H,bs,H−2),3.79(1H,bs,H−3),3.89(1H,m,H−4),3.78(1H,m,H−4a),3.13(1H,d,J12Hz,H−10b).
ジルビジューム パンクラチスタチン7−O−燐酸塩(2d):
無色の粉末(0.11g);m.p.200℃(dec.);δ/ppm(300MHz,DO)6.63(1H,bs,H−10),6.00(1H,s,OCHO),5.90(1H,s,OCHO),4.45(1H,bs,H−1),4.16(1H,bs,H−2),3.98(1H,bs,H−3),3.80(2H,m,H−4,H−4a),3.10(1H,d,J12Hz,H−10b);m/z(FAB)573.9[(M+H),5%],298.9(35),215.1(25),135.1(100);C1415NO11PRb573.8619に対する計算値HRFAB573.8598.
ジセシューム パンクラチスタチン7−O−燐酸塩(2e):
黄色いオイル(0.22g);δ/ppm(300MHz,DO)6.63(1H,bs,H−10),6.01(1H,s,OCHO),5.90(1H,s,OCHO),4.46(1H,bs,H−1),4.17(1H,bs,H−2),3.98(1H,bs,H−3),3.85(1H,m,H−4),3.79(1H,m,H−4a),3.08(1H,d,J12Hz,H−10b);m/z(FAB)669.9[(M+H),50%],225.0(100);C1415NO11PCS2669.8491に対する計算値HRFAB669.8468.
マグネシューム パンクラチスタチン7−O−燐酸塩(2f):
無色の粉末(64mg);m.p.220℃ dec.;δ/ppm(300MHz,DO)6.66(1H,bs,H−10),6.01(1H,s,OCHO),5.94(1H,s,OCHO),4.44(1H,bs,H−1),4.16(1H,bs,H−2),3.98(1H,bs,H−3),3.80(2H,m,H−4,H−4a),3.07(1H,d,J12Hz,H−10b).
カルシューム パンクラチスタチン7−O−燐酸塩(2g):無色の粉末(77mg);m.p.230℃(dec.);δ/ppm(300MHz,DO)6.64(1H,bs,H−10),5.99(1H,s,OCHO),5.96(1H,s,OCHD),4.41(1H,bs,H−1),4.14(1H,bs,H−2),3.97(1H,bs,H−3),3.76(2H,m,H−4,H−4a),3.41(1H,d,J11Hz,H−10b).亜鉛 パンクラチスタチン7−O−燐酸塩(2h):無色の結晶構造粉末(76mg);m.p.190℃(dec.);δ/ppm(300MHz,DO)6.69(1H,bs,H−10),5.96(2H,bs,OCHO),4.44(1H,bs,H−1),4.15(1H,bs,H−2),3.98(1H,bs,H−3),3.80(2H,m,H−4,H−4a),3.12(1H,d,J12Hz,H−10b).
マンガン パンクラチスタチン7−O−燐酸塩(2i):無色の粉末(88mg);m.p.240℃(dec.);δ/ppm(300MHz,DO)6.65(1H,bs,H−10),6.00(1H,s,OCHO),5.95(1H,s,OCHO),4.44(1H,bs,H−1),4.15(1H,bs,H−2),3.99(1H,bs,H−3),3.79(2H,m,H−4,H−4a),3.08(1H,d,J12Hz,H−10b).ピペラジン パンクラチスタチン7−O−燐酸塩(2j):無色の粉末(78mg);m.p.200℃(dec.);δ/ppm(300MHz,DO)6.62(1H,bs,H−10),5.99(1H,s,OCHO),5.88(1H,s,OCHO),4.44(1H,bs,H−1),4.15(1H,bs,H−2),3.96(1H,bs,H−3),3.84(1H,m,H−4),3.77(1H,m,H−4a),3.10(1H,d,J12Hz,H−10b),2.99−3.01(8H,m,4xCHピペラジン);m/z(FAB)492.2[(M+H),30%],460.1(85),154.1(100);C182711P492.1383に対する計算値HRFAB492.1373.
モルフォリン パンクラチスタチン7−O−燐酸塩(2k):無色の粉末(71mg);m.p.180℃(dec.);δ/ppm(300MHz,DO)6.63(1H,bs,H−10),5.99(1H,s,OCHO),5.89(1H,s,OCHO),4.44(1H,bs,H−1),4.15(1H,bs,H−2),3.96(1H,bs,H−3),3.78−3.82(6H,m,H−4,H−4a,2xCHNモルフォリン),3.10−3.14(5H,m,H−10b,2xCHOモルフォリン);m/z(FAB)493.2[(M+H),15%],406.1(30),154.1(00);C182612P493.1222に対する計算値HRFAB493.1215.
ピリジン パンクラチスタチン7−O−燐酸塩(2l):無色の粉末(63mg);m.p.270℃(dec.);δ/ppm(300MHz,DO)8.66(2H,d,J7Hz,H−2及びH−6ピリミジン),8.49(1H,t,J7Hz,H−4ピリミジン),7.97(2H,t,J7Hz,H−3及びH−5ピリミジン),6.45(1H,bs,H−10),5.95(2H,s,OCHO),4.41(1H,bs,H−1),4.15(1H,bs,H−2),3.97(1H,bs,H−3),3.89(1H,m,H−4),3.84(1H,m,H−4a),3.10(1H,d,J12Hz,H−10b).
イミダゾール パンクラチスタチン7−O−燐酸塩(2m):無色の粉末(71mg);m.p.250℃(dec.);δ/ppm(300MHz,DO)8.21(1H,s,H−2イミダゾール),7.21(2H,bs,H−4及びH−5イミダゾール),6.65(1H,bs,H−10),6.00(1H,s,OCHO),5.95(1H,s,OCHO),4.44(1H,bs,H−1),4.15(1H,bs,H−2),3.97(1H,bs,H−3),3.85(1H,m,H−4),3.75(1H,m,H−4a),3.38(1H,d,J12Hz,H−10b).
キニン パンクラチスタチン7−O−燐酸塩(2n):白色のふわふわした粉末(0.11g);m.p.173−175℃;δ/ppm(300MHz,DO)8.59(1H,d,J4.5Hz,H−2’キニン),7.86(1H,d,J9Hz,H−8’キニン),7.57(1H,d,J4.5Hz,H−3’キニン),7.36(1H,dd,J2,9Hz,H−5’キニン),7.23(1H,m,H−7’キニン),6.34(1H,s,H−10),5.91(1H,s,OCHO),5.87(1H,s,OCHO),5.66(1H,m,H−10キニン),5.59(1H,m,H−9キニン),4.98(1H,d,J17Hz,H−11aキニン),4.93(1H,d,J11Hz,H−11bキニン),4.35(1H,bs,H−1),4.12(1H,bs,H−2),3.95(1H,bs,H−3),3.83−3.87(5H,m,OMeキニン,H−4,H−4a),3.80(1H,m,H−6aキニン),3.22(2H,m,H−8キニン,H−2aキニン),2.93(1H,d,J12Hz,H−10b),2.77(2H,m,H−2bキニン,H−6bキニン),2.04(1H,m,H−3キニン),1.93(2H,m,H−5aキニン,H−7aキニン),1.86(1H,m,H−4キニン),1.62(1H,m,H−5bキニン),1.27(1H,m,H−7bキニン);m/z(FAB)730.2[(M+H),60%],325.2(100);C344113P730.2377に対する計算値HRFAB730.2372.
キニジン パンクラチスタチン7−O−燐酸塩(2o):無色の粉末(0.14g);m.p.183−185℃;δ/ppm(300MHz,DO)8.62(1H,d,J4.5Hz,H−2’キニジン),7.88(1H,d,J9Hz,H−8’キニジン),7.61(1H,d,J4.5Hz,H−3’キニジン),7.41(1H,dd,J2,9Hz,H−5’キニジン),7.25(1H,m,H−7’キニジン),6.34(1H,s,H−10),5.89(2H,s,OCHO),5.66(1H,m,H−10キニジン),5.59(1H,m,H−9キニジン),5.09(1H,d,J17Hz,H−11aキニジン),4.95(1H,d,J11Hz,H−11bキニジン),4.35(1H,bs,H−1),4.14(1H,bs,H−2),3.95(1H,bs,H−3),3.85−3.89(5H,m,OMeキニジン,H−4,H−4a),3.79(1H,m,H−6aキニジン),3.23(2H,m,H−8及びH−2aキニジン),2.93(1H,d,J12Hz,H−10b),2.65(2H,m,H−2b及びH−6bキニジン),2.04(1H,m,H−3キニジン),1.88(2H,m,H−5a及びH−7aキニジン),1.86(1H,m,H−4キニジン),1.69(1H,m,H−5bキニジン),1.44(1H,m,H−7bキニジン);m/z(FAB)730[(M+H),5%],325(65),154(100);C344113P730.2377に対する計算値HRFAB730.2384.
General method for the synthesis of panclastatin prodrug (2b-o) An aqueous metal solution of a phosphoric acid derivative of panclastatin (6,1 ml of water or 50 mg in methanol) in an appropriate metal salt (carbonate or acetate) ) Or a 1.0 M solution of amine free base (250 μl). The solution became cloudy and the mixture was stirred for 6 hours. The mixture was lyophilized (or evaporated) to give the desired prodrug salt (2b-o). The salt was further purified by trituration with wet methanol and / or diethyl ether to remove unreacted starting material.
Dillitum Pancratistatin 7-O-phosphate (2b):
Yellowish powder (61 mg); m. p. 240 ° C. dec. : Δ H / ppm (300 MHz, D 2 O) 6.62 (1H, bs, H-10), 600 (1H, s, OCH A H B O), 5.90 (1 H, s, OCHAH B O) 4.44 (1H, bs, H-1), 4.15 (1H, bs, H-2), 3.97 (1H, bs, H-3), 3.80 (2H, m, H- 4, H-4a), 3.07 (1H, d, J12 Hz, H-10b).
Dicalum pancratistatin 7-O-phosphate (2c):
Colorless powder (66 mg); m. p. 280 ° C. dec. Δ H / ppm (300 MHz, D 2 O) 6.68 (1H, bs, H-10), 6.00 (1 H, s, OCH A H B O), 5.59 (1 H, s, OCH A H B O), 4.45 (1H, bs, H-1), 4.16 (1H, bs, H-2), 3.79 (1H, bs, H-3), 3.89 (1H, m, H-4), 3.78 (1H, m, H-4a), 3.13 (1H, d, J12 Hz, H-10b).
Zirbidium pancratistatin 7-O-phosphate (2d):
Colorless powder (0.11 g); p. 200 ° C. (dec.); Δ H / ppm (300 MHz, D 2 O) 6.63 (1H, bs, H-10), 6.00 (1 H, s, OCH A H B O), 5.90 ( 1H, s, OCH A H B O), 4.45 (1H, bs, H-1), 4.16 (1H, bs, H-2), 3.98 (1H, bs, H-3), 3.80 (2H, m, H-4, H-4a), 3.10 (1H, d, J12 Hz, H-10b); m / z (FAB) 573.9 [(M + H) + , 5%] , 298.9 (35), 215.1 (25), 135.1 (100); calculated for C 14 H 15 NO 11 PRb 2 5733.8619 HRFAB573.8598.
Dishesum pancratistatin 7-O-phosphate (2e):
Yellow oil (0.22 g); δ H / ppm (300 MHz, D 2 O) 6.63 (1H, bs, H-10), 6.01 (1H, s, OCH A H B O), 5.90 (1H, s, OCH A H B O), 4.46 (1H, bs, H-1), 4.17 (1H, bs, H-2), 3.98 (1H, bs, H-3) , 3.85 (1H, m, H-4), 3.79 (1H, m, H-4a), 3.08 (1H, d, J12Hz, H-10b); m / z (FAB) 669. 9 [(M + H) + , 50%], 225.0 (100); calculated for C 14 H 15 NO 11 PC S2 669.8491 HRFAB6699.8468.
Magnesium Pancratistatin 7-O-phosphate (2f):
Colorless powder (64 mg); m. p. 220 ° C. dec. Δ H / ppm (300 MHz, D 2 O) 6.66 (1H, bs, H-10), 6.01 (1H, s, OCH A H B O), 5.94 (1 H, s, OCH A H B O), 4.44 (1H , bs, H-1), 4.16 (1H, bs, H-2), 3.98 (1H, bs, H-3), 3.80 (2H, m, H-4, H-4a), 3.07 (1H, d, J12 Hz, H-10b).
Calcium pancratistatin 7-O-phosphate (2 g): colorless powder (77 mg); p. 230 ° C. (dec.); Δ H / ppm (300 MHz, D 2 O) 6.64 (1H, bs, H-10), 5.99 (1H, s, OCH A H B O), 5.96 ( 1H, s, OCH A H B D), 4.41 (1H, bs, H-1), 4.14 (1H, bs, H-2), 3.97 (1H, bs, H-3), 3.76 (2H, m, H-4, H-4a), 3.41 (1H, d, J11 Hz, H-10b). Zinc pancratistatin 7-O-phosphate (2h): colorless crystal structure powder (76 mg); m. p. 190 ° C. (dec.); Δ H / ppm (300 MHz, D 2 O) 6.69 (1H, bs, H-10), 5.96 (2H, bs, OCH 2 O), 4.44 (1H, bs, H-1), 4.15 (1H, bs, H-2), 3.98 (1H, bs, H-3), 3.80 (2H, m, H-4, H-4a), 3.12 (1H, d, J12 Hz, H-10b).
Manganese pancratistatin 7-O-phosphate (2i): colorless powder (88 mg); m. p. 240 ° C. (dec.); Δ H / ppm (300 MHz, D 2 O) 6.65 (1H, bs, H-10), 6.00 (1 H, s, OCH A H B O), 5.95 ( 1H, s, OCH A H B O), 4.44 (1H, bs, H-1), 4.15 (1H, bs, H-2), 3.99 (1H, bs, H-3), 3.79 (2H, m, H-4, H-4a), 3.08 (1H, d, J12 Hz, H-10b). Piperazine Pancratistatin 7-O-phosphate (2j): colorless powder (78 mg); m. p. 200 ° C. (dec.); Δ H / ppm (300 MHz, D 2 O) 6.62 (1H, bs, H-10), 5.99 (1H, s, OCH A H B O), 5.88 ( 1H, s, OCH A H B O), 4.44 (1H, bs, H-1), 4.15 (1H, bs, H-2), 3.96 (1H, bs, H-3), 3.84 (1H, m, H-4), 3.77 (1H, m, H-4a), 3.10 (1H, d, J12Hz, H-10b), 2.99-3.01 (8H , M, 4 × CH 2 piperazine); m / z (FAB) 492.2 [(M + H) + , 30%], 460.1 (85), 154.1 (100); C 18 H 27 N 3 O 11 P492 Calculated for 1383 HRFAB492.1373.
Morpholine Pancratistatin 7-O-phosphate (2k): colorless powder (71 mg); m. p. 180 ° C. (dec.); Δ H / ppm (300 MHz, D 2 O) 6.63 (1H, bs, H-10), 5.99 (1H, s, OCH A H B O), 5.89 ( 1H, s, OCH A H B O), 4.44 (1H, bs, H-1), 4.15 (1H, bs, H-2), 3.96 (1H, bs, H-3), 3.78-3.82 (6H, m, H- 4, H-4a, 2xCH 2 N morpholine), 3.10-3.14 (5H, m, H-10b, 2xCH 2 O morpholine); m / z (FAB) 493.2 [(M + H) + , 15%], 406.1 (30), 154.1 (00); calculated for C 18 H 26 N 2 O 12 P4933.1222 HRFAB4933.1215 .
Pyridine pancratistatin 7-O-phosphate (2 l): colorless powder (63 mg); m. p. 270 ° C. (dec.); Δ H / ppm (300 MHz, D 2 O) 8.66 (2H, d, J7 Hz, H-2 and H-6 pyrimidine), 8.49 (1H, t, J7 Hz, H−) 4 pyrimidine), 7.97 (2H, t, J7Hz, H-3 and H-5 pyrimidine), 6.45 (1H, bs, H-10), 5.95 (2H, s, OCH 2 O), 4.41 (1H, bs, H-1), 4.15 (1H, bs, H-2), 3.97 (1H, bs, H-3), 3.89 (1H, m, H-4) ), 3.84 (1H, m, H-4a), 3.10 (1H, d, J12Hz, H-10b).
Imidazole panclatistatin 7-O-phosphate (2 m): colorless powder (71 mg); p. 250 ° C. (dec.); Δ H / ppm (300 MHz, D 2 O) 8.21 (1H, s, H-2 imidazole), 7.21 (2H, bs, H-4 and H-5 imidazole), 6.65 (1H, bs, H-10), 6.00 (1H, s, OCH A H B O), 5.95 (1 H, s, OCH A H B O), 4.44 (1 H, bs) , H-1), 4.15 (1H, bs, H-2), 3.97 (1H, bs, H-3), 3.85 (1H, m, H-4), 3.75 (1H , M, H-4a), 3.38 (1H, d, J12 Hz, H-10b).
Quinine pancratistatin 7-O-phosphate (2n): white fluffy powder (0.11 g); m. p. 173-175 ° C .; δ H / ppm (300 MHz, D 2 O) 8.59 (1H, d, J4.5 Hz, H-2 ′ kinin), 7.86 (1H, d, J9 Hz, H-8 ′ kinin) ), 7.57 (1H, d, J4.5 Hz, H-3 ′ kinin), 7.36 (1H, dd, J2, 9 Hz, H-5 ′ kinin), 7.23 (1H, m, H−) 7 ′ kinin), 6.34 (1H, s, H-10), 5.91 (1H, s, OCH A H B O), 5.87 (1 H, s, OCH A H B O), 5. 66 (1H, m, H-10 kinin), 5.59 (1H, m, H-9 kinin), 4.98 (1H, d, J17 Hz, H-11a kinin), 4.93 (1H, d, J11 Hz, H-11b kinin), 4.35 (1H, bs, H-1), 4.12 (1H, bs, H-2), 3.95 (1H, b s, H-3), 3.83-3.87 (5H, m, OMe kinin, H-4, H-4a), 3.80 (1H, m, H-6a kinin), 3.22 (2H) , M, H-8 kinin, H-2a kinin), 2.93 (1H, d, J12 Hz, H-10b), 2.77 (2H, m, H-2b kinin, H-6b kinin), 2. 04 (1H, m, H-3 kinin), 1.93 (2H, m, H-5a kinin, H-7a kinin), 1.86 (1H, m, H-4 kinin), 1.62 (1H , M, H-5b kinin), 1.27 (1H, m, H-7b kinin); m / z (FAB) 730.2 [(M + H) + , 60%], 325.2 (100); C Calculated for 34 H 41 N 3 O 13 P 730.2377 HRFAB 730.2372.
Quinidine Pancratistatin 7-O-phosphate (2o): colorless powder (0.14 g); m. p. 183-185 ° C .; δ H / ppm (300 MHz, D 2 O) 8.62 (1H, d, J4.5 Hz, H-2 ′ quinidine), 7.88 (1H, d, J9 Hz, H-8 ′ quinidine) ), 7.61 (1H, d, J4.5 Hz, H-3 ′ quinidine), 7.41 (1H, dd, J2, 9 Hz, H-5 ′ quinidine), 7.25 (1H, m, H−) 7 ′ quinidine), 6.34 (1H, s, H-10), 5.89 (2H, s, OCH 2 O), 5.66 (1H, m, H-10 quinidine), 5.59 (1H , M, H-9 quinidine), 5.09 (1H, d, J17Hz, H-11a quinidine), 4.95 (1H, d, J11Hz, H-11b quinidine), 4.35 (1H, bs, H -1), 4.14 (1H, bs, H-2), 3.95 (1H, bs, H-3), 3.85-3. 89 (5H, m, OMe quinidine, H-4, H-4a), 3.79 (1H, m, H-6a quinidine), 3.23 (2H, m, H-8 and H-2a quinidine), 2.93 (1H, d, J12 Hz, H-10b), 2.65 (2H, m, H-2b and H-6b quinidine), 2.04 (1H, m, H-3 quinidine), 1.88 (2H, m, H-5a and H-7a quinidine), 1.86 (1H, m, H-4 quinidine), 1.69 (1H, m, H-5b quinidine), 1.44 (1H, m , H-7b quinidine); m / z (FAB) 730 [(M + H) + , 5%], 325 (65), 154 (100); calculated for C 34 H 41 N 3 O 13 P 730.2377 HRFAB730. 2384.

結果と検討
発端から、リン酸塩中間体(5)へのより直接的アプローチが求められた。この点において、我々のグループ(Pettit et al.,1998,Anti−Cancer Drug Design,13,981)によるジベンジルフォスファイト技術の利用(Silverberg et al.,1996,Tetrahedron Letters,37,771)はアルキルアミドフォスファインメソード(Perrich and Johns,1988,Synthesis,142)に計り知れない手段であることを証明した。有機溶媒におけるその貧弱な溶解性およびC−環における四つの第二アルコール基の存在に依って、我々の注意深く調査したジベンジルフォスファイト法を適用する時、(+)−パンクラチスタチン(1a)の直接フォスフォリレイションは生成物の非常に複雑な混合物並びに若干の未反応出発物質を与えた。従って、私たちの注目は、より可溶性で部分的に保護されたフォスフォリレイションの出発物質を与えるパンクラチスタチンのC−環ヒドロキシ基の選択的アセチル化に向けられた。パンクラチスタチン(1a)をピリジン中無水酢酸および4−ジメチルアミノピリジンと容易に反応させて1,2,3,4,7−O−ペンタアセトキシ誘導体(3)を得、次いで環流する水−ピリジン中で加熱することによって直ちに所望の1,2,3,4−O−ペンタアセトキシ(4)に変換(収率66%)する時、その目的は容易に実現された。四塩化炭素、N−エチルジイソプロピルアミンおよび4−ジメチルアミノピリジンの存在下における後者とジベンジルフォスファイトとの反応は87%の収率で感熱性のパンクラチスタチン7−O−ジベンジルフォスフェイト(5)を与えた。(5)の熱および/またはシリカゲルとの接触はフォスフェトクリービジュを(4)に戻した。ベンジルフォスファイト(5)は次にナトリウムメトキシドの存在において脱アセチル化した。接触水素化を用いてベンジルエステル基をクリーブして対応するリン酸誘導体(6)を得た。この酸は直ちに2当量のナトリュームメトキシドで処理してジナトリュームリン酸塩プロドラッグ(2a)(92%)を得た。
Results and discussion From the outset, a more direct approach to the phosphate intermediate (5) was sought. In this regard, our group (Pettit et al., 1998, Anti-Cancer Drug Design, 13, 981) uses dibenzyl phosphite technology (Silverberg et al., 1996, Tetrahedron Letters, 37, 771) is alkyl. It proved to be an immeasurable means in the Amidophos Fine Method (Perrich and Johns, 1988, Synthesis, 142). Due to its poor solubility in organic solvents and the presence of four secondary alcohol groups in the C-ring, (+)-pancratistatin (1a) when applying our carefully investigated dibenzyl phosphite method The direct phosphorylation of gave a very complex mixture of products as well as some unreacted starting material. Thus, our attention has been directed to the selective acetylation of the pancratistin C-ring hydroxy group which provides a more soluble and partially protected phosphorylation starting material. Pancratistatin (1a) is readily reacted with acetic anhydride and 4-dimethylaminopyridine in pyridine to give 1,2,3,4,7-O-pentaacetoxy derivative (3), followed by refluxing water-pyridine The objective was readily realized when immediately converted to the desired 1,2,3,4-O-pentaacetoxy (4) by heating in (yield 66%). The reaction of the latter with dibenzylphosphite in the presence of carbon tetrachloride, N-ethyldiisopropylamine and 4-dimethylaminopyridine is a 87% yield of thermosensitive pancratistatin 7-O-dibenzylphosphate ( 5). The heat of (5) and / or contact with silica gel returned the phosphate crevice back to (4). Benzyl phosphite (5) was then deacetylated in the presence of sodium methoxide. The benzyl ester group was cleaved using catalytic hydrogenation to give the corresponding phosphoric acid derivative (6). The acid was immediately treated with 2 equivalents of sodium methoxide to give dinatrine phosphate prodrug (2a) (92%).

(+)−パンクラチスタチンプロドラッグ(2a)のこのより実用的合成は取りかかっていたが、私たちは親リン酸塩の種々のカチオン誘導体を合成し評価することに取りかかった。このプロドラッグリン酸プレカーサー(6)を適当な塩基で処理することによって、所要の塩(2b−o)が形成された。プロドラッグ(2a)のナトリュームカチオンを種々のカチオンで置き換えることによって、私たちは水溶性特性(mg/ml)を評価することができた。アンモニュームカチオンあるものもまた、p−グリコプロテイン機構での障害による多剤耐性を無効にする能力を有する安定な水溶性薬剤を得る目的で、調査された(Sato et al.,1995,Cancer Chemotherapy and Pharmacology,35,271)。  Although this more practical synthesis of (+)-pancratistatin prodrug (2a) was underway, we began to synthesize and evaluate various cationic derivatives of the parent phosphate. The required salt (2b-o) was formed by treating the prodrug phosphate precursor (6) with an appropriate base. By replacing the sodium cation of prodrug (2a) with various cations, we were able to evaluate the water solubility properties (mg / ml). Some of the ammonium cations have also been investigated with the aim of obtaining stable water-soluble drugs that have the ability to abolish multidrug resistance due to disturbances in the p-glycoprotein mechanism (Sato et al., 1995, Cancer Chemotherapy). and Pharmacology, 35, 271).

すべての合成製品はネズミP388のリンパ性白血病細胞ラインおよびヒトのガン細胞ラインに対して評価された。プロドラッグ誘導体の大部分は(+)−パンクラチスタチン(1a)およびナトリュームプロドラッグ(2a)に類似の活性を発揮した。マンガン(2i)およびモルフォリン(2k)誘導体は活性において10〜20倍の増加を示したけれども、その貧弱な水溶性が可能性あるプロドラッグとしてのさらに臨床前の進行に対しその使用を疑問視させた。その結果、ナトリューム誘導体(2a)は、その高い活性、適当な水溶性およびここに記載の効率的合成のため好ましい選択品であり続ける。  All synthetic products were evaluated against the murine P388 lymphocytic leukemia cell line and the human cancer cell line. Most of the prodrug derivatives exerted similar activity to (+)-pancratistatin (1a) and sodium prodrug (2a). Manganese (2i) and morpholine (2k) derivatives showed a 10-20 fold increase in activity, but questioned their use for further preclinical progression as prodrugs with potential poor water solubility I let you. As a result, the sodium derivative (2a) continues to be a preferred choice because of its high activity, adequate water solubility and the efficient synthesis described herein.

以上の記載から、新しく有用な抗新生成物薬の製造がここに記載され説明され、上記の目的のすべてを果たすことが容易に明らかである。この開示に対応する人に容易に起こるごとき修正、変更、適応は、本発明の範囲にあることは勿論理解されるべきである。  From the foregoing, it will be readily apparent that the manufacture of new and useful antineoplastic drugs is described and illustrated herein and serves all of the above objectives. It should, of course, be understood that modifications, changes, and adaptations that readily occur to those corresponding to this disclosure are within the scope of the present invention.

図1は本発明の合成をステップーバイーステップに示す。  FIG. 1 illustrates the synthesis of the present invention step by step.

Claims (12)

(+)パンクラチスタチンをテトラアセテイトで選択的に保護し、その後該保護されたパンクラチスタチンをジベンジルクロロフォスフェイトでリン酸化し、その後、2当量のナトリュームメトキシドと反応させてジナトリューム(+)パンクラチスタチンフォスフェイトを生じながら、ナトリュームメトキシドでアセテイトとベンジル保護基を分割することから成るフォスフェイトプロドラッグを合成する方法。  (+) Pancratistatin is selectively protected with tetraacetate, which is then phosphorylated with dibenzylchlorophosphate and then reacted with 2 equivalents of sodium methoxide to give dinatrume. (+) A method of synthesizing a phosphate prodrug consisting of cleaving an acetoate and a benzyl protecting group with sodium methoxide while producing pancratistatin phosphate. アセテイトとベンジル保護基は室温において分割される請求項1の方法。  The process of claim 1 wherein the acetate and benzyl protecting groups are resolved at room temperature. ナトリュームメトキシドは、リチューム、カリューム、リスビジューム、セシューム、マグネシューム、カルシューム、亜鉛、マンガン、ピペラジン、モルフォリン、ピリジン、イミダゾール、キニンおよびキニジンから成る群から選ばれた適当な金属塩(カーボネイトまたはアセテイト)またはアミンフリー塩基によって置き換えられる請求項1の方法。  Natrium methoxide is a suitable metal salt (carbonate or acetate) selected from the group consisting of lithium, calumum, lisbidium, cesium, magnesum, calcium, zinc, manganese, piperazine, morpholine, pyridine, imidazole, quinine and quinidine. The process of claim 1 wherein the process is replaced by an amine free base. アセテイトとベンジル保護基は室温において分割される請求項3の方法。  The method of claim 3 wherein the acetate and benzyl protecting groups are resolved at room temperature. 出発物質としてパンクラチスタチンを選びそしてジベンジルクロロフォスファイトテクニックを利用することによって保護フォスフェイト中間体を得ることから成るパンクラチスタチンプロドラッグを合成する改良方法。  An improved method of synthesizing pancratistin prodrugs comprising selecting panclastatin as a starting material and obtaining a protected phosphate intermediate by utilizing the dibenzyl chlorophosphite technique. 該パンクラチスタチンのC環ヒドロキシル基を選択的にアセチル化してペンタアセトキシ誘導体を得る段階から成る請求項5による方法。  6. The process according to claim 5 comprising the step of selectively acetylating the C-ring hydroxyl group of said panclastatin to obtain a pentaacetoxy derivative. 該ペンタアセトキシ誘導体をテトラアセテイト誘導体に変換する段階から成る請求項6による方法。  A process according to claim 6 comprising the step of converting the pentaacetoxy derivative to a tetraacetate derivative. 四塩化炭素の存在において該テトラアセテイトを該ジベンジルフォスファイトと反応させてジベンジルフォスフェイト誘導体を得る段階から成る請求項7による方法。  8. A process according to claim 7 comprising the step of reacting the tetraacetate with the dibenzyl phosphite in the presence of carbon tetrachloride to obtain a dibenzyl phosphate derivative. 該ジベンジルフォスフェイトはナトリュームメトキシドの存在において脱アセチル化された請求項8による方法。  9. A process according to claim 8 wherein the dibenzyl phosphate is deacetylated in the presence of sodium methoxide. 該脱アセチル化ジベンジルフォスフェイトの触媒水素化の段階から成る請求項9による方法。  10. A process according to claim 9 comprising the step of catalytic hydrogenation of the deacetylated dibenzyl phosphate. 該リン酸誘導体をナトリュームメトキシドで処理してジナトリュームフォスフェイトパンクラチスタチンプロドラッグを得る段階から成る請求項9による方法。  10. A process according to claim 9 comprising the step of treating the phosphate derivative with sodium methoxide to give dinatrine phosphate pancratistatin prodrug. 該プロドラッグリン酸プレカーサー(6)は、リン酸水素原子を図1に2a〜2oとして表示した構造の群から選ばれたイオンまたは分子で置き換えるように、適当な塩基で処理される請求項9による方法。  The prodrug phosphate precursor (6) is treated with a suitable base so as to replace the hydrogen phosphate atom with an ion or molecule selected from the group of structures represented as 2a-2o in FIG. By the method.
JP2002583375A 2002-04-17 2002-04-17 Synthesis of panclastatin prodrug Pending JP2005515958A (en)

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