專利名稱::一類具有抗炎活性的熊果酸噁唑啉類新藥及其制備方法一類具有抗炎活性的熊果酸噁唑啉類新藥及其制備方法
背景技術(shù):
:本發(fā)明是涉及天然產(chǎn)物及它的結(jié)構(gòu)改造,特別是涉及到具有抗炎的熊果酸衍生物的合成。熊果酸即3"-羥基-熊果-12-烯-28-酸(3"-1^(11"(丫-1^-12-en-28-oicacid,1)屬于a-香樹脂醇(a-amyrin)型五環(huán)三萜類化合物,它是自然界中分布較廣的天然活性化合物,具有多種生物活性,如保肝、抗炎、抗腫瘤、抗艾滋病毒等多種作用,而且副作用小,毒性低,顯示出較大的臨床應(yīng)用潛力.熊果酸的結(jié)構(gòu)式研究表明,熊果酸對角叉菜膠和右旋糖酐誘導(dǎo)的鼠爪水腫和棉球誘導(dǎo)的慢性肉芽腫有顯著的抗炎活性。目前,將熊果酸做為制劑的報道較多,且以申請專利。在公開號為CN1410064中,報道了熊果酸豆磷脂納米粒凍干粉針劑及制備方法;公開號為CN1410065中提供一種熊果酸氰基丙烯酸酯納米粒凍干粉針劑及制備方法;公開號為CN1410066中公開了熊果酸聚乳酸納米粒凍干粉針劑及制備方法;公開號為CN1771968中公開了一種熊果酸脂肪儒注射劑及其制備方法;公開號為CN1857273中公開了一種熊果酸脂微球制劑及其制備方法。有關(guān)熊果酸的藥理研究也有很多,如熊斌等的"熊果酸藥理學(xué)的研究進(jìn)展"(《國外醫(yī)學(xué)藥學(xué)分冊》,2004,31[3]);夏國豪等的"熊果酸抗腫瘤作用研究進(jìn)展"(《國外醫(yī)學(xué)腫瘤學(xué)分冊》,2002,29[6]);王婷等的"熊果酸藥理作用研究進(jìn)展"(《中華醫(yī)學(xué)研究雜志》);等等。
發(fā)明內(nèi)容本發(fā)明的目的之一是以熊果酸為先導(dǎo)化合物,對其結(jié)構(gòu)修飾從而合成新衍生物。本發(fā)明的目的之二是合成一系列新的具有更好藥理活性的抗炎類藥物。本發(fā)明的目的之三是提供以這些化合物作為有效的藥用活性成分而用于抗炎類藥物,使醫(yī)生和/或病員在對疾病的防治時能增加對可供使用藥物的選擇。本發(fā)明以熊果酸為先導(dǎo)化合物,對其結(jié)構(gòu)改造得到的化合物,其結(jié)構(gòu)式如式(I)所示aX)N—N.COfH3(I)其中,式中的R,R'可以是氫,苯基,取代苯基、甲基等如上所述的熊果酸衍生物I由以下步驟制備5s5g本發(fā)明用熊果酸與氯乙酸乙酯在丙酮中反應(yīng)制得熊果酸乙氧甲酰基甲酯2,2與水合肼在無水乙醇中回流制得3,3在冰乙酸做催化劑下與羰基化合物縮合得到4,4在醋酸酐環(huán)合下得到I。如上所述的熊果酸衍生物具有保肝和抗炎活性,可用于治療肝炎和炎癥疾病。如上所述,本發(fā)明具有合成路線短,成本低,易于實現(xiàn)工業(yè)化生產(chǎn)等優(yōu)點。動物實驗的結(jié)果表明,本發(fā)明上述的化合物(I)可以具有加強熊果酸的抗炎活性作用,增強藥效。按照《新藥臨床前研究指導(dǎo)原則》要求,采用了二甲苯至小鼠右耳致炎,左耳作對照的辦法,本發(fā)明對上述化合物(I)和1所示母體化合物熊果酸進(jìn)行了對比實驗。二甲苯致小鼠右耳致炎實驗將化合物5a5g和UA(熊果酸)用0.5。/。CMC(羧甲基纖維素鈉)液配制成0.2°/。濃度混懸液,以0.5XCMC液和0.75%阿司匹林溶液作為對照組,取昆明種小鼠66只,按體重隨機分為11組,每組6只,雌雄各半.各組小鼠,每日給藥一次,連續(xù)給藥六天,于末次給藥后30min,用二甲苯0.05ml/鼠涂抹每鼠右耳致炎,左耳作對照,致炎后30分鐘脫頸椎處死小鼠,以7mm直徑打孔器取下耳緣左、右耳片,分別用電子天平稱重,以右、左耳片重量差表示腫脹度,進(jìn)行組間顯著差比較.實驗結(jié)果見表1.表l目標(biāo)化合物的抗炎活性Table1Anti-inflammatoryactivitiesfortargetcompounds<table>tableseeoriginaldocumentpage5</column></row><table>上述對比實驗結(jié)果顯示,本發(fā)明的熊果酸類化合物與其母體化合物l比較,在抗炎方面有更好的效果。按照上述內(nèi)容,在不脫離本發(fā)明上述基本技術(shù)思想的前提下,根據(jù)本領(lǐng)域的普通技術(shù)知識和慣用手段,對其內(nèi)容還可以有多種形式的修改、替換或變更。一下通過實施例形式的具體實施方式,對本發(fā)明的實施內(nèi)容再進(jìn)一步的詳細(xì)說明。但不應(yīng)將此理解為本發(fā)明上述主題的范圍僅限于一下的實例。凡基于本發(fā)明上述內(nèi)容所實現(xiàn)的技術(shù)均屬于本發(fā)明的范圍。具體實施例方式本發(fā)明是通過下列步驟完成的1.熊果酸1與氯乙酸乙酯得到化合物22.化合物2與水合肼在無水乙醇中回流得到化合物33.化合物3與羰基化合物進(jìn)一歩縮合得到化合物4<formula>formulaseeoriginaldocumentpage6</formula>其中R、R,為H、CH:,、Ph以及取代苯基等4.化合物4與乙酸酐環(huán)合得到化合物I<formula>formulaseeoriginaldocumentpage7</formula><table>tableseeoriginaldocumentpage7</column></row><table>下面舉例說明實施例1化合物(2)的制備將4.560g(10mmo1)1溶于250ml丙酮中,加熱回流使其充分溶解,待溶液澄清后停止加熱,加入2.073g(l5mmol)K2C03,室溫攪拌溶液成乳白色后,將0.0498g(0.3mmol)KI禾n4mlEt3N加入到該溶液中,緩慢滴加4mlClCH2COOC2H5(28.2mmol),室溫反應(yīng),TLC監(jiān)測反應(yīng).反應(yīng)結(jié)束后,過濾,少量丙酮沖洗,減壓濃縮后加入飽和食鹽水,乙酸乙酯萃取3次,合并乙酸乙酯層,有機層水洗至中性后用無水Na2S04干燥,過濾、濃縮,所得產(chǎn)物用無水乙醇重結(jié)晶得無色顆粒狀晶體2,產(chǎn)率95%,m.p.l74175。C。實施例2化合物(3)的制備將2.710g(5mmo1)2和2mL80。/。水合肼在20ml無水乙醇中加熱回流反應(yīng),TLC監(jiān)測反應(yīng).反應(yīng)結(jié)束后,冷卻至室溫,有白色固體析出,抽濾烘干,粗產(chǎn)物用無水乙醇重結(jié)晶,得白色針狀晶體3,產(chǎn)率93%.m.p.256~257°C;'麗MR(400MHz,CDC13)S:0.69(s,3H,CH3),0.78(s,3H,CH3),0.87(d,J=6.4HZ,3H,CH3),0.91(s,3H,CH3),0.94(d,J=6.0HZ,3H,CH3),0.99(s,3H,CH3),1.10(3H,s,CH3),2.22(d,J=12.0HZ,1H,H-18),3.21(dd,J=11.2,4.8HZ,1H,H-3),4.30(brs,2H,NH),4.32(d,J=16,0HZ,1H,COOCHaCOO),4.83(d,J=16.0HZ,1H,COOCHbCOO),5.33(t,J=3.6HZ,1H,H-12),9.00(s,1H,NH);IR(KBr)v:3330,3278,2920,1728,1663,1602cm";MSm/z(0/o):551.4([M+Na]+);HRMS(ESI)calcdforC32H52N204Na[M+Na]+551.3822,found551.3819實施例3化合物(4)的制備將1.056g(2mmol)的3溶于30ml無水乙醇中加入2.6mmol的苯甲醛(加入催化劑量的冰乙酸),攪拌,加熱回流反應(yīng),TLC監(jiān)測反應(yīng),反應(yīng)結(jié)束后,冷卻,靜置2h后抽濾,用乙醇重結(jié)晶得化合物4a.白色固體,產(chǎn)率89%,m.p,290292。C;'HNMR(CDC13,400MHz)S:0.71(s,3H,CH3),0.78(s,3H,CH3),0.83(d,J=6.4HZ,3H,CH3),0.91(s,3H,CH3),0.94(d,J=6.0HZ,3H,CH3),0.98(s,3H,CH3),1.10(s,3H,CH3),2.29(d,J=11.6HZ,IH,H-18),3.21(dd,J=10.8,4.8HZ,IH,H-3),5.00(d,J=16.0HZ,lH,COOCHaCOO),5.14(d,J=16.0HZ,IH,COOCHbCOO),5.28(t,J=3.6HZ,1H,H-12),7.407.70(m,5H,PhH),8.78(s,IH,N=CH),11.40(s,1H,NH);IR(KBr)v:3446,3248,2920,1730,1701,1667cm";MSm/z(%):639.4([M+Na]+);HRMS(ESI)calcdforC39H56N204Na[M+Na]十639.4159,found639.4132.同法合成4a一g.4b:白色固體,產(chǎn)率85%,m.p.214~215°C,'HNMR(CDC13,400MHz)5:0.75(s,3H,CH3),0.78(s,3H,CH3),0.83(d,J=6.4HZ,3H,CH3),0.91(s,3H,CH3),0.94(d,J=6.0HZ,3H,CH3),0.99(s,3H,CH3),1.09(s,3H,CH3),2.29(d,J=11.6HZ,IH,H-18),3.21(dd,J=10.8,4.8HZ,IH,H-3),3.84(s,3H,OCH3),4.98(d,J=16.0HZ,lH,COOCHaCOO),5.12(d,J=16.0HZ,IH,COOCHbCOO),5.28(t,J=3.6HZ,IH,H-12),6.907.57(m,4H,PhH),8.60(s,1H,N=CH),l].32(s,IH,NH);IR(KBr)v:3435,2927,1710,1685cm.1;MSm/z(%):669.4([M+Na]+);HRMS(ESI)calcdforC40H58N2O5Na[M+Na]+669.4262,found669.4238.4c:白色固體,產(chǎn)率90%,m.p.276277。C,'HNMR(CDC13,400MHz)S:0.74(s,3H,CH3),0.78(s,3H,CH3),0.86(d,J=6.4HZ,3H,CH3),0.91(s,3H,CH3),0.94(d,J=6,0HZ,3H,CH3),0.99(s,3H,CH3),1.10(s,3H,CH3),2.29(d,J=11.6HZ,IH,H-18),3.21(dd,J=10.8,4.8HZ,1H,H-3),5.02(d,J=16.0HZ,IH,COOCHaCOO),5.15(d,J=16.0HZ,1H,COOCHbCOO),5.28(t,J=3.6HZ,1H,H-12),7.59~8.27(m,4H,PhH),8.81(s,IH,N=CH),11.45(s,IH,麗);IR(KBr)v:3435,3256,2927,1710,1677cm-';MSm/z(0/o):684.3([M+Na]+);HRMS(ESI)calcdforC39H55N306Na[M+Na]+684.3976,found684.3983.4d:黃色固體,產(chǎn)率95%,m.p.273274。C,'HNMR(CDC13,400MHz)S:0.75(s,3H,CH3),0.78(s,3H,CH3),0.87(d,J=6.4HZ,3H,CH3),0.92(s,3H,CH3),0.95(d,J=6.4HZ,3H,CH3),0.98(s,3H,CH3),1.10(s,3H,CH3),2.29(d,J=10.8HZ,1H,H-18),3.21(dd,J=11.2,5.2HZ,IH,H-3),5.02(d,J=16,0HZ,1H,COOCHaCOO),5.14(d,J=16.0HZ,IH,COOCHbCOO),5.27(t,J=3.6HZ,IH,H-12),7.778.28(m,4H,PhH),8.70(s,IH,N=CH),11.50(s,IH,NH);IR(KBr)v:3512,3119,2920,1718,1680cm-1;MSm/z(%):684.3([M+Na]+);HRMS(ESI)calcdforC39H55N306Na[M+Na]+684.3973,found684.3983.4e:白色固體,產(chǎn)率82%,m.p.215217。C,'HNMR(CDC13,400MHz)S:0.78(s,3H,CH3),0.81(s,H,CH3),0.86(d,J=6.4HZ,3H,CH3),0.92(s,H,CH3),0.95(d,J=6.4HZ,3H,CH3),0.99(s,3H,CH3),1.10(s,3H,CH3),2.19(s,3H,CH3),2.29(d,J=11.6HZ,IH,H-18),3.20(dd,J=11.6,5.6HZ,1H,H-3),5.01(d,J=16.0HZ,IH,COOCHaCOO),5.17(d,J=16,0HZ,1H,COOCHbCOO),5.27(t,J=3.6HZ,IH,H-12),7.39~7.71(m,5H,PhH),8.48(s,IH,N=CH),11.20(s,1H,NH);IR(KBr)v:3444,3265,2930,1740,1688cm-1;MSm/z(%):653.4([M+Na]+);HRMS(ESI)calcdforC40H58N2O4Na[M+Na]+653.4319,found653.4289.4f:白色固體,產(chǎn)率79%,m.p.l78180。C,'HNMR(CDC13,400MHz)5:0.73(s,3H,CH3),0.80(s,3H,CH3),0.86(d,J=6.0HZ,3H,CH3),0.92(s,3H,CH3),0.95(d,J=6.0HZ,3H,CH3),0.99(s,3H,CH3),1.09(s,3H,CH3),2.17(s,3H,CH3),2.29(d,J=l1.6HZ,IH,H-18),3.21(dd,J=12.0,5.6HZ,IH,H-3),5.00(d,J=16.0HZ,IH,COOCHaCOO),5.16(d,J=16.0HZ,IH,COOCHbCOO),5.27(t,J=3.6HZ,IH,H-12),7.187.60(m,4H,PhH),8.43(s,1H,N=CH),11.15(s,IH,NH);IR(KBr)v:3444,3250,2926,1721,1689crrT1;MSm/z(%):667.4([M+Na]+);HRMS(ESI)calcdforC4lH6。N204Na[M+Na]+667.4461,found667.4445.4g:白色固體,產(chǎn)率83%,m.p.l79180。C','HNMR(CDC13,400MHz)3:0.74(s,3H,CH3),0.80(s,3H,CH3),0.86(d,J=6.4HZ,3H,CH3),0.92(s,3H,CH3),0.95(d,J=6.4HZ,3H,CH3),0.99(s,3H,CH3),1.10(s,3H,CH3),2.17(s,3H,CH3),2.28(d,J=11.6HZ,IH,H-18),3.21(dd,J=12.0,5.2HZ,1H,H-3),4.99(d,J=16.0HZ,IH,COOCHaCOO),5.14(d,J=16.0HZ,IH,COOCHbCOO),5.27(t,J=3.6HZ,1H,H-12),7.357.65(m,4H,PhH),8.50(s,1H,N=CH),11.25(s,1H,NH);IR(KBr)v:3444,2927,1720,1692cm";MSm/z(%):687.3([M+Na]+);HRMS(ESI)calcdforC40H57ClN2O4Na[M+Na]+687.3870,found687.3899.實施例4化合物5的制備取0.616g(lmmol)的4a加入到25ml的反應(yīng)瓶中,加入10mlAc2O,加熱回流lh,冷卻后倒入冰水中,劇烈攪拌至油狀物完全固化,過濾,水洗,粗產(chǎn)品干燥后經(jīng)硅膠柱層析純化得目標(biāo)產(chǎn)物5a.白色固體,產(chǎn)率60%,m.p.8486。C,'HNMR(CDC13,400MHz)S:0.70(s,3H,CH3),0.75(s,3H,CH3),0.86(d,J=6.4HZ,3H,CH3),0.91(s,3H,CH3),(X94(d,J=6.4HZ,3H,CH3),0.98(s,3H,CH3),1.09(s,3H,CH3),2.04(s,3H,OCOCH3),2.09(s,3H,NCOCH3),2.27(d,J=10.8HZ,1H,H-18),4.52(t,J=7.6HZ,1H,H-3),4.70(m,2H,COOCH2COO),5.24(t,J=4.0HZ,1H,H-12),6.87(s,1H,2-H),7.397.90(m,5H,PhH);IR(KBr)v:2926,1732,1682,1244,1027cm";MSm/z(%):723.4([M+Na]+);HRMS(ESI)calcdforC43H60N2O6Na[M+Na]+723.4310,found723,4344.同法制得5b~6g5b:白色固體,產(chǎn)率58%,m.p.l06108。C,'HNMR(CDC13,400MHz)5:0.73(s,3H,CH3),0.85(s,3H,CH3),0.87(d,J=6.4HZ,3H,CH3),0.90(s,3H,CH3),0.93(d,J=6.0HZ,3H,CH3),0.96(s,3H,CH3),1.09(s,3H,CH3),2.04(s,3H,OCOCH3),2.09(s,3H,NCOCH3),2.25(d,J=l.2HZ,1H,H-18),3.89(s,3H,OCH3),4.51(t,J=7.6HZ,1H,H畫3),4.67(m,2H,COOCH2COO),5.24(t,J=3.6HZ,1H,H-12),6.67(s,1H,2-H),7.00~7.86(4H,m,PhH);IR(KBr)v:2946,1733,1679,1248,1030cm-1;MSm/z(%):753.4([M+Na]+);HRMS(ESI)calcdforC44H62N207Na[M+Na]「753.4416,,found753.4449.5c:白色固體,產(chǎn)率62%,m.p.ll912rC,'HNMR(CDC13,400MHz)&0.75(s,3H,CH3),0.83(s,3H,CH3),0.86(d,J=6.0HZ,3H,CH3),0,90(s,3H,CH3),0.93(d,J=6.4HZ,3H,CH3),0.96(s,3H,CH3),1.08(s,3H,CH3),2.04(s,3H,OCOCH3),2.15(s,3H,NCOCH:,),2.27(d,J=10.8HZ,1H,H-18),4.47(t,J=7.6HZ,1H,H-3),4.74(m,2H,COOCH2COO),5.24(t,J=3.6HZ,1H,H-12),6,93(s,1H,2-H),7.59~8.26(m,4H,PhH);IR(KBr)v:2949,1733,1715,1698,1244,1027cm-1;MSm/z(%):768.4([M+Na]+);HRMS(ESI)calcdforC43H59N308Na[M+Na]+768.4193,found768.4194.5d:白色固體,產(chǎn)率70。/0,m.p,120122。C,'HNMR(CDCl3,400MHz)S:0.74(s,3H,CH3),0.84(s,3H,CH3),0.86(d,J=6.4HZ,3H,CH3),0.91(s,3H,CH3),0.93(d,J=6.4HZ,3H,CH3),1.00(s,3H,CH3),1.08(s,3H,CH3),2.04(s,3H,OCOCH3),2.14(s,3H,NCOCH3),2.27(d,J=10.8HZ,1H,H-18),4.49(t,J=7.6HZ,1H,H-3),4.77(m,2H,COOCH2COO),5.23(t,J=3.6HZ,1H,H-12),6.94(s,1H,2-H),7.598.26(4H,m,PhH).IR(KBr):2947,1732,1694,1244,1027cm";MSm/z(%):768.4([M+Na]+);HRMS(ESI)calcdforC43H59N308Na[M+Na]+768.4185,found768.4194.5c:白色固體,產(chǎn)率50%,m.p.9698。C,HNMR(CDC13,400MHz)5:0.79(s,3H,CH3),0.82(s,3H,CH3),0.86(d,J=6.4HZ,3H,CH3),0.91(s,3H,CH3),0.93(d,J=6.4HZ,3H,CH3),0.96(s,3H,CH3),1.09(s,3H,CH3),2.04(s,3H,OCOCH3),2.09(s,3H,NCOCH3),2.20(s,3H,2-CH3),2.27(d,J=10.8HZ,1H,H-18),4.47(t,J=7.6HZ,1H,H-3),4.69(m,2H,COOCH2COO),5.22(t,J=3.6HZ,1H,H-12),7.36~7.51(m,5H,PhH).IR(KBr):2947,1733,1678,1244,1028cm";MSm/z(%):737.4([M+Na]+);HRMS(ESI)calcdforC44H62N206Na[M+Na]+737.4466,found737.4500.5f:白色固體,產(chǎn)率45%,m.p.9496。C,'HNMR(CDC13,400MHz)5:0.79(s,3H,CH3),0.82(s,3H,CH3),0.86(d,J=6.4HZ,3H,CH3),0.91(s,3H,CH3),0.93(d,J=6.4HZ,3H,CH3),0.96(s,3H,CH3),1.09(s,3H,CH3),2.04(s,3H,OCOCH3),2.09(s,3H,NCOCH3),2.20(s,3H,2-CH3),2.27(d,J=10.8HZ,1H,H-18),4.47(t,J=7.6HZ,1H,H陽3),4.69(m,2H,COOCH2COO),5.22(t,J-3.6HZ,1H,H-12),7.167.38(m,5H,PhH).IR(KBr):2948,1733,1678,244,1027cm陽';MSm/z(%):75L4([M+Na]+);HRMS(ESI)calcdforC45H64N206Na[M+Na]+75.4656,found751.4657。5g:白色固體,產(chǎn)率50%,m.p.9193。C,'HNMR(CDC13,400MHz)&0.79(s,3H,CH3),0.83(s,3H,CH3),0.86(d,J=6.4HZ,3H,CH3),0.91(s,3H,CH3),0.95(d,J=6.4HZ,3H,CH3),0.99(s,3H,CH3),1.09(s,3H,CH3),2.04(s,3H,COCH3),2.10(s,3H,NCOCH3),2.21(s,3H,2-CH3),2.27(d,J=10.8HZ,1H,H-18),4.47(t,J=7.6HZ,H,H-3),4.70(m,2H,COOCH2COO),5.22(t,J=3.6HZ,1H,H-12),7.33~7.45(m,4H,PhH);IR(KBr)v:2948,1734,1676,1244,1027;MSm/z(%):771.4([M+Na]+);HRMS(ESI)calcdforC44H61ClN206Na[M+Na]+771.4096,found771.4110。權(quán)利要求1一類具有抗炎的熊果酸噁二唑啉衍生物,其結(jié)構(gòu)如式(I)id="icf0001"file="S2007100507976C00011.gif"wi="88"he="40"top="5"left="5"img-content="drawing"img-format="tif"orientation="portrait"inline="no"/>其中,式中的R,R可以是氫,苯基,取代苯基、甲基等。2以化學(xué)式(l)為代表的化合物的合成方法,其特征是熊果酸與氯乙酸乙酯反應(yīng)制得熊果酸乙氧甲酰基甲酯,后者與水合肼反應(yīng)得到相應(yīng)的酰肼,酰肼與取代羰基化合物在乙醇作溶劑下回流得到熊果酸酰腙,熊果酸酰腙在環(huán)合劑作用下得到化合物(I)。<formula>formulaseeoriginaldocumentpage2</formula>3本發(fā)明化合物可以做成片劑、丸劑、顆粒劑、膠囊劑以及注射劑或其它臨床可以接受的適宜劑型。全文摘要本發(fā)明公開了具有抗炎的熊果酸類衍生物及其制備方法。該類化合物具有良好的抗炎作用。該類熊果酸類衍生物新藥具有如下化學(xué)式(I)。本發(fā)明所提供的熊果酸類衍生物是具有抗炎活性,它以熊果酸為母體化合物,根據(jù)藥物構(gòu)效分子學(xué)的原理進(jìn)行結(jié)構(gòu)修飾,設(shè)計并制備了治療炎癥功能的具有高活性的化合物。文檔編號C07J63/00GK101182345SQ20071005079公開日2008年5月21日申請日期2007年12月14日優(yōu)先權(quán)日2007年12月14日發(fā)明者春支,穎李,楊定菊,石萬棋,睿蔣,聰鄧申請人:四川國康藥業(yè)有限公司