CN108976147B - 氨基正己酰氨基甲环酰氨基正己酰碱性氨基酸,其合成,活性和应用 - Google Patents
氨基正己酰氨基甲环酰氨基正己酰碱性氨基酸,其合成,活性和应用 Download PDFInfo
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- CN108976147B CN108976147B CN201710400008.0A CN201710400008A CN108976147B CN 108976147 B CN108976147 B CN 108976147B CN 201710400008 A CN201710400008 A CN 201710400008A CN 108976147 B CN108976147 B CN 108976147B
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- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C237/00—Carboxylic acid amides, the carbon skeleton of the acid part being further substituted by amino groups
- C07C237/24—Carboxylic acid amides, the carbon skeleton of the acid part being further substituted by amino groups having the carbon atom of at least one of the carboxamide groups bound to a carbon atom of a ring other than a six-membered aromatic ring of the carbon skeleton
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C231/00—Preparation of carboxylic acid amides
- C07C231/12—Preparation of carboxylic acid amides by reactions not involving the formation of carboxamide groups
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C277/00—Preparation of guanidine or its derivatives, i.e. compounds containing the group, the singly-bound nitrogen atoms not being part of nitro or nitroso groups
- C07C277/08—Preparation of guanidine or its derivatives, i.e. compounds containing the group, the singly-bound nitrogen atoms not being part of nitro or nitroso groups of substituted guanidines
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C279/00—Derivatives of guanidine, i.e. compounds containing the group, the singly-bound nitrogen atoms not being part of nitro or nitroso groups
- C07C279/20—Derivatives of guanidine, i.e. compounds containing the group, the singly-bound nitrogen atoms not being part of nitro or nitroso groups containing any of the groups, X being a hetero atom, Y being any atom, e.g. acylguanidines
- C07C279/22—Y being a hydrogen or a carbon atom, e.g. benzoylguanidines
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- Chemical & Material Sciences (AREA)
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- Chemical Kinetics & Catalysis (AREA)
- Medicines That Contain Protein Lipid Enzymes And Other Medicines (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Description
技术领域
本发明涉及(N-氨基正己酰氨甲环酰)-氨基正己酰-AA,涉及它们的制备方法、涉及它们的抗肿瘤活性,涉及它们的抗肿瘤转移活性,以及涉及它们的抗炎活性活性,因而本发明涉及它们在制备抗肿瘤药物,抗肿瘤转移药物和抗炎药物中的应用。本发明属于生物医药领域。
背景技术
侵袭和转移过程是恶性肿瘤的基本生物学特征,是肿瘤研究工作的困境之一。癌症转移是肿瘤患者发病和死亡的主要原因,约占癌症死亡人数的90%。目前对肿瘤浸润转移的研究已从不同方面进行了深入的探讨。其中,尿激酶型纤溶酶原激活物(uPA)系列在肿瘤侵袭转移中的作用成为当今研究的热点之一。尿激酶型纤溶酶原激活物(uPA)系统,这是一种丝氨酸蛋白酶家族,在肿瘤的浸润转移起着至关重要的作用。该系统包括尿激酶型纤溶酶原激活物(uPA)、尿激酶受体(uPAR)、纤溶酶原激活物抑制剂(PAI),该系统涉及多种生理和病理过程,包括细胞迁移,血管生成,炎症,胚胎发育,肿瘤生长和转移。
氨基正己酸能与纤溶酶原激活物产生竞争性抑制,使纤溶酶原不能激活为纤溶酶,是临床上治疗纤溶性出血药物。氨甲环酸与纤溶酶原结合,同样能发挥抗纤溶作用。两者分别能通过阻止uPA/uPAR相互作用和抑制纤溶酶活化来达到抑制uPA系统的相关作用。氨基正己酸和氨甲环酸抑制uPA系统的最低有效剂量分别为3.8mmol/kg和3.2mmol/kg。发明人认为它们的毒副作用与它们的最低有效剂量高有直接关系。发明人认识到先将两种已知的uPA系统抑制剂合理组合,再连接氨基酸而构建的新型u-PA抑制剂在低剂量下就应具有抗肿瘤、抗肿瘤转移和抗炎三重作用。根据这种认识,经过3年探索,发现用碱性氨基酸(L-Lys和L-Arg)修饰的氨基正己酰甲环酰氨基正己酸衍生物在0.5μmol/kg剂量下不仅具有抗肿瘤转移活性,而且同时具有抗肿瘤和抗炎的活性。因为药物的毒副作用都可以随剂量降低而消失,所以有效剂量比氨基正己酸和氨甲环酸至少降低6400倍表明了这种结构修饰有突出的技术效果。根据这些发现,发明人提出了本发明。
发明内容
本发明的第一个内容是提供下式的(N-氨基正己酰氨甲环酰)-氨基正己酰-AA(式中AA为L-Lys残基和L-Arg残基)。
本发明的第二个内容是提供(N-氨基正己酰氨甲环酰)-氨基正己酰-AA(AA为L-Lys残基和L-Arg残基)的合成方法,该方法包括:
(1)Boc-氨甲环酸与氨基正己酸甲酯缩合得Boc-氨甲环酰基氨基正己酸甲酯(1);
(2)Boc-氨甲环酰基-氨基正己酸甲酯在氯化氢的乙酸乙酯溶液中脱Boc得氨甲环酰基氨基正己酸甲酯(2);
(3)Boc-氨基正己酸与氨甲环酰基氨基正己酸甲酯(2)缩合得(N-Boc-氨基正己酰氨甲环酰)-氨基正己酸甲酯(3);
(4)化合物3皂化脱甲基得到(N-Boc-氨基正己酰氨甲环酰)-氨基正己酸(4);
(5)化合物4在氯化氢的乙酸乙酯溶液中脱Boc得(N-氨基正己酰氨甲环酰)-氨基正己酸(7);
(6)化合物4与AA-OBzl(AA为L-Lys残基和L-Arg残基)缩合得(N-Boc-氨基正己酰氨甲环酰)-氨基正己酰基氨基酸苄酯(5a,b)。
(7)化合物5a,b先氢解脱苄氧羰基、再在氯化氢的乙酸乙酯溶液中脱Boc得到(N-氨基正己酰基氨甲环酰)-氨基正己酰-AA(6a,b)(AA为L-Lys残基和L-Arg残基)。
本发明的第三个内容是评价(N-氨基正己酰氨甲环酰)-氨基正己酰-AA(AA为L-Lys残基和L-Arg残基)抑制C57BL/6小鼠抗肺癌转移活性。
本发明的第四个内容是评价(N-氨基正己酰氨甲环酰)-氨基正己酰-AA(AA为L-Lys残基和L-Arg残基)对S180小鼠肿瘤生长的抑制应用。
本发明的第五个内容是评价(N-氨基正己酰氨甲环酰)-氨基正己酰-AA(AA为L-Lys残基和L-Arg残基)对ICR小鼠炎症的抑制作用。
附图说明
图1(N-氨基正己酰氨甲环酰)-氨基正己酰-AA的合成路线.5a和6a中AA为L-Lys残基;5b和6b中AA为L-Arg残基。i)二环己基碳二亚胺(DCC),1-羟基苯并三唑(HOBt),N-甲基吗啉(NMM),干燥四氢呋喃(THF);ii)氯化氢的乙酸乙酯溶液(4M);iii)CH3OH,2MNaOH;iv)Pd/C,H2,CH3OH;氯化氢的乙酸乙酯溶液(4M)。
具体实施方式
为了进一步阐述本发明,下面给出一系列实施例。这些实施例完全是例证性的,它们仅用来对本发明进行具体描述,不应当理解为对本发明的限制。
实施例1制备(N-Boc-氨甲环酰)-氨基正己酸甲酯(1)
将0.69g(2.68mmol)Boc-氨甲环酸混悬于50mL干燥四氢呋喃中,在0℃下依次加入0.66g(3.20mmol)二环己基碳二亚胺(DCC)和0.44g(3.26mmol)1-羟基苯并三唑(HOBt),搅拌30min。然后加入0.49g(2.70mmol)氨基正己酸甲酯,并用N-甲基吗啉(NMM)调节溶液pH至9,室温搅拌6h后TLC(二氯甲烷/甲醇=30/1)显示反应完成。减压浓缩除去溶剂,残留物用50mL乙酸乙酯溶解,过滤得滤液。滤液先后用20mL饱和NaHCO3溶液洗涤3次,20mL饱和NaCl溶液洗涤3次,20mL饱和KHSO4溶液洗涤3次,20mL饱和NaCl溶液洗涤3次,20mL饱和NaHCO3溶液洗涤3次,20mL饱和NaCl溶液洗涤3次,乙酸乙酯层用无水硫酸钠干燥12h。过滤,滤液减压浓缩至干,得到0.83g(80%)标题化合物,为无色固体。ESI-MS(m/e):385[M+H]+。
实施例2制备N-氨甲环酰基-氨基正己酸甲酯·盐酸盐(2)
搅拌下将6.00g(15.62mmol)化合物1与60mL氯化氢的乙酸乙酯溶液(4M)在-10℃缓慢混合,并保持-10℃搅拌5h。TLC(二氯甲烷/甲醇=30/1)显示反应完成。减压浓缩,残留物用无水乙酸乙酯溶解,得到的溶液减压浓缩。该操作重复3次。固体再用无水乙醚充分悬浮,去乙醚,得到的无色固体直接用于下一步反应。ESI-MS(m/e):322[M+H]+。
实施例3制备(N-Boc-氨基正己酰氨甲环酰)-氨基正己酸甲酯(3)
采用实施例1的方法,从3.36g(14.55mmol)Boc-氨基正己酸和4.67g(14.57mmol)化合物2得到淡黄色固体。该固体用乙酸乙酯充分磨洗,得到6.20g(85%)标题化合物,为无色固体。ESI-MS(m/e):498[M+H]+。
实施例4制备(N-Boc-氨基正己酰氨甲环酰)-氨基正己酸(4)
将6.20g(12.47mmol)化合物3溶于20mL甲醇,0℃用NaOH水溶液(2M)调节pH至12。控制0℃和pH 12搅拌4h,TLC(二氯甲烷/甲醇=25/1)显示反应完成。反应混合物用饱和KHSO4溶液调节pH至7,减压浓缩。残留物继续用饱和KHSO4溶液调节pH至2,用乙酸乙酯萃取,将乙酸乙酯层合并,用饱和NaCl溶液洗涤至中性。乙酸乙酯相用无水硫酸钠干燥12h。过滤,滤液减压浓缩至干,得到4.60g(76%)标题化合物,为无色固体。ESI-MS(m/e):484[M+H]+。
实施例5制备(N-氨基正己酰氨甲环酰)-氨基正己酸(7)
采用实施例2的方法,从1.30g(2.69mmol)化合物4得到0.87g(84%)标题化合物,为无色固体。Mp 236-239℃;(c=0.1,H2O).ESI-MS(m/e):384[M+H]+.IR(cm-1):3265,3081,2927,2857,1633,1557,1470,1416,1396,1362,1327,1235,1210,726,697.1H-NMR(300MHz,D2O):δ/ppm=3.11(t,J=6.6Hz,2H),2.98(d,J=6.6Hz,2H),2.93(t,J=7.8Hz,2H),2.20(t,J=7.2Hz,2H),2.12(t,J=7.2Hz,2H),2.09(m,1H),1.76(m,4H),1.67~1.55(m,4H),1.52~1.40(m,5H),1.37~1.24(m,6H),0.93(m,2H)。
实施例6制备(N-Boc-氨基正己酰氨甲环酰)-氨基正己酰赖氨酸苄酯(5a)
采用实施例1的方法,从4.00g(8.28mmol)化合物4和2.80g(7.52mmol)HCl·Lys(Boc)-OBzl得2.49g(41%)标题化合物,为无色固体。ESI-MS(m/e):802[M+H]+。
实施例7制备(N-Boc-氨基正己酰氨甲环酰)-氨基正己酰精氨酸苄酯(5b)
采用实施例1的方法,从4.00g(8.28mmol)化合物4和3.33g(6.92mmol)Tos·Arg(NO2)-OBzl得1.03g(19%)标题化合物,为无色固体。ESI-MS(m/e):775[M+H]+。
实施例8制备(N-氨基正己酰氨甲环酰)-氨基正己酰赖氨酸(6a)
将1.10g(1.37mmol)5a溶于20mL甲醇中,加入110mg Pd/C,边搅拌边抽气,室温通10h氢气。TLC(二氯甲烷/甲醇=4/1)显示反应完成。过滤除去Pd/C,滤液减压浓缩,残留物加入5mL无水乙酸乙酯搅拌均匀,-10℃缓慢加10mL氯化氢的乙酸乙酯溶液(4M)并搅拌至TLC(乙酸乙酯/水/冰醋酸=3/1/1)显示反应完全。减压浓缩,残留物用无水乙酸乙酯溶解,减压浓缩,残留物用无水乙酸乙酯溶解。该操作重复3次。得到的固体用无水乙醚充分混合,静置,去乙醚,得到的无色固体在0℃用饱和NaHCO3溶液调节pH至7,用C18柱层析纯化,得480mg(68%)标题化合物,为无色固体。Mp 208-209℃.(c=0.1,H2O).ESI-MS(m/e):512[M+H]+.IR(cm-1):3292,2927,2857,1634,1548,1437,1392,1257,1232,1207,1168,696.1H-NMR(300MHz,D2O):δ/ppm=4.07(dd,J1=7.8Hz,J2=5.1Hz,1H),3.07(t,J=6.3Hz,2H),2.95(d,J=6.3Hz,2H),2.88(t,J=7.2Hz,4H),2.18(m,4H),2.08(m,1H),1.75(m,5H),1.63~1.46(m,9H),1.44~1.35(m,3H),1.33~1.22(m,8H),0.89(m,2H)。
实施例9制备(N-氨基正己酰氨甲环酰)-氨基正己酰精氨酸(6b)
采用实施例8的方法,从0.92g(1.19mmol)5b得到120mg(19%)标题化合物,为无色固体。Mp 219-221℃.(c=0.1,H2O).ESI-MS(m/e):540[M+H]+.IR(cm-1):3282,3084,2927,2858,1634,1549,1446,1396,1235,1208,692.1H-NMR(300MHz,D2O):δ/ppm=4.06(m,1H),3.08(m,4H),2.93(d,J=6.3Hz,2H),2.80(t,J=6.6Hz,2H),2.18(m,4H),2.06(m,1H),1.71(m,5H),1.62~1.50(m,8H),1.40~1.35(m,4H),1.29~1.20(m,6H),0.87(m,2H)。
实施例10测定化合物6a,b的抗肿瘤转移活性
本测定模型用Lewis小鼠肺癌细胞(LLC,购自ATCC)接种,选用DMEM培养基(含10%经灭活的胎牛血清,1×105U/L青霉素和100mg/L链霉素),按照贴壁细胞培养方法每两天传代一次,富集细胞。待细胞生长状态良好并处于对数生长期时消化细胞,用生理盐水调整细胞密度至1×107个/mL。胎盘蓝染色,使活细胞计数>95%。取近交系C57BL/6雄性小鼠(SPF级,体重20±2g),左手固定小鼠。用75%乙醇对小鼠右前肢腋窝皮肤消毒。右手持1mL无菌注射器往小鼠腋部皮下注射LLC肿瘤细胞悬液,每只小鼠注射0.2mL。小鼠接种10天后,长出直径约4-5mm的肿瘤即为瘤源。接种10天的Lewis肺癌荷瘤小鼠乙醚麻醉,脱颈椎处死。用75%乙醇浸泡10min,消毒,在超净工作台上剥离瘤体。选择生长良好的肿瘤组织在无菌平皿中剪碎,置于玻璃制造的组织匀浆器内。按瘤块重比生理盐水体积为1比3(g比mL)的比例加温度为4℃的生理盐水,轻轻研磨制成细胞悬液。细胞悬液过200目细胞筛制单细胞悬液。用生理盐水调单细胞悬液的细胞密度至1.5×107个/mL。胎盘蓝染色,使活细胞计数>95%。左手固定近交系C57BL/6雄性小鼠,用75%的乙醇对小鼠右前肢腋窝皮肤消毒。右手持1mL无菌注射器于小鼠腋部皮下注射瘤细胞悬液,每只注射0.2mL。接种10天后小鼠长出直径4-5mm的肿瘤,按测得的肿瘤体积将接种小鼠随机分组。每组12只小鼠。接种肿瘤的第11天小鼠或口服公认的抗肿瘤转移肽RGDS的生理盐水溶液(剂量为20μmol/kg/天)或口服化合物6a,b的生理盐水溶液(剂量为0.5μmol/kg/天)或口服化合物7的生理盐水溶液(剂量为5μmol/kg/天)或口服生理盐水(剂量为10mL/kg/天),每天给1次药,连续给药12天,每隔两天测量并记录肿瘤体积。最后一次给药的次日测量瘤体积,乙醚麻醉脱颈椎处死,取小鼠的肿瘤称重,取小鼠的肺并计算肿瘤肺部转移的瘤节数。用t检验对数据进行统计分析。结果见表1。在0.5μmol/kg剂量下化合物6a,b不仅有效地抑制肿瘤肺转移,而且活性与剂量比它们高400倍的RGDS及剂量比它们高10倍的化合物7没有显著性差异。这些数据表明,本发明有显著的技术效果。
表1 化合物6a,b的抗肿瘤转移活性
a)与生理盐水比p<0.01,与RGDS及化合物7比p>0.05;n=12.
实施例11测定化合物6a,b的抗肿瘤生长活性
测定前将阿霉素,化合物7和化合物6a,b都用生理盐水溶解,用于S180小鼠给药。在无菌环境中取接种于雄性ICR小鼠10天生长旺盛的S180腹水瘤液,用生理盐水稀释成(1:2)的液体充分混合,将肿瘤细胞悬液用新鲜配制的0.2%台盼蓝染色,混匀后按白细胞计数方法计数,染蓝色者为死细胞,不染色者为活细胞。按细胞浓度=4大方格内活细胞数/4×104×稀释倍数=细胞数/mL计算细胞密度,按细胞存活率=活细胞数/(活细胞数+死细胞数)×100%计算细胞存活率。将存活率大于90%的瘤液用匀浆法制成密度为2.0×107个/mL的细胞悬液。该细胞悬液接种于小鼠右腋皮下(0.2mL/只),制造S180荷瘤小鼠。接种24h后S180荷瘤小鼠每日腹腔注射阿霉素的生理盐水溶液(剂量为2μmol/kg/天g)或每日口服化合物7的生理盐水溶液(剂量为5μmol/kg/天)或每日口服化合物6a,b的生理盐水溶液(剂量为0.5μmol/kg/天)。每天给药一次,连续给药12天。最后一次给药的次日测量瘤体积,乙醚麻醉脱颈椎处死,然后用镊子固定小鼠右腋肿瘤生长部位,剪开皮肤钝性剥离肿瘤并称重。用瘤重(均值±SD g)表示疗效,数据用t检验和方差分析。结果见表2。在0.5μmol/kg剂量下化合物6a,b不仅能有效地抑制肿瘤生长,而且活性与剂量比它们高10倍的化合物7没有显著性差异。这些数据表明,本发明有显著的技术效果。
表2 化合物6a-b对S180小鼠肿瘤生长的影响
a)与生理盐水比p<0.01,与化合物7比p>0.05;n=12.
实施例12测定化合物6a,b的抗炎活性
因为二甲苯引起的小鼠耳肿胀被公认为急性炎症模型,所以本发明在二甲苯引起的小鼠耳肿胀模型上测定化合物6a,b的治疗作用。因为阿司匹林是治疗急性炎症的阳性药,所以本发明选择阿司匹林为阳性对照药。ICR雄性小鼠(体重42±3g)在温度为22℃的环境静息2天,自由饮水和进食。之后,随机分为生理盐水组(剂量为0.2mL/只),阿司匹林组(剂量为1.11mmol/kg),化合物7组(剂量为5μmol/kg)及化合物6a,b组(剂量为0.5μmol/kg),每组12只小鼠。测定时小鼠按所在组或口服生理盐水,或口服阿司匹林,或口服化合物7,或口服化合物6a,b。给药30min后,往小鼠的左耳廓均匀涂抹30μL二甲苯,2h后小鼠接受乙醚麻醉,断颈处死,剪下左右两耳,用7mm的打孔器在两耳的相同位置取圆形耳片,称重,求出两耳肿胀差值作为肿胀度。即肿胀度=左耳圆片重量–右耳圆片重量。结果见表3。在0.5μmol/kg剂量下化合物6a,b不仅能有效地抑制二甲苯引起的小鼠耳肿胀,而且活性与剂量比它们高10倍的化合物7没有显著性差异。这些数据表明,本发明有显著的技术效果。
表3 化合物6a,b对二甲苯引起的小鼠耳肿胀的影响
a)与生理盐水比p<0.01,与化合物7比p>0.05;n=12.
Claims (5)
2.制备权利要求1所述的(N-氨基正己酰氨甲环酰)-氨基正己酰-AA的方法,该方法包括:
(1)Boc-氨甲环酸与氨基正己酸甲酯缩合得Boc-氨甲环酰基氨基正己酸甲酯(1);
(2)Boc-氨甲环酰基-氨基正己酸甲酯在氯化氢的乙酸乙酯溶液中脱Boc得氨甲环酰基氨基正己酸甲酯(2);
(3)Boc-氨基正己酸与氨甲环酰基氨基正己酸甲酯(2)缩合得(N-Boc-氨基正己酰氨甲环酰)-氨基正己酸甲酯(3);
(4)化合物3皂化脱甲基得到(N-Boc-氨基正己酰氨甲环酰)-氨基正己酸(4);
(5)化合物4在氯化氢的乙酸乙酯溶液中脱Boc得(N-氨基正己酰氨甲环酰)-氨基正己酸(7);
(6)化合物4与AA-OBzl缩合得(N-Boc-氨基正己酰氨甲环酰)-氨基正己酰基氨基酸苄酯(5a,b);
(7)化合物5a,b先氢解脱苄氧羰基、再在氯化氢的乙酸乙酯溶液中脱Boc得到(N-氨基正己酰基氨甲环酰)-氨基正己酰-AA。
3.权利要求1所述的(N-氨基正己酰氨甲环酰)-氨基正己酰-AA在制备抗肿瘤转移药物中的应用。
4.权利要求1所述的(N-氨基正己酰氨甲环酰)-氨基正己酰-AA在制备抗肿瘤药物中的应用。
5.权利要求1所述的(N-氨基正己酰氨甲环酰)-氨基正己酰-AA在制备抗炎药物中的应用。
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