CN106316918A - 氨基酸修饰的双吲哚,其合成,抗血栓活性和制备抗血栓剂的应用 - Google Patents
氨基酸修饰的双吲哚,其合成,抗血栓活性和制备抗血栓剂的应用 Download PDFInfo
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- C—CHEMISTRY; METALLURGY
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- C07D—HETEROCYCLIC COMPOUNDS
- C07D209/00—Heterocyclic compounds containing five-membered rings, condensed with other rings, with one nitrogen atom as the only ring hetero atom
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- C07D209/04—Indoles; Hydrogenated indoles
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D403/00—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, not provided for by group C07D401/00
- C07D403/14—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, not provided for by group C07D401/00 containing three or more hetero rings
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Abstract
本发明公开了通式I的氨基酸修饰的双吲哚衍生物,即2,2’-双(1H-吲哚-3-乙酰-AA-2-基)-(3-羟基-4-甲氧基苯基)-甲烷,公开了它们的合成,公开了它们的抗血栓活性,因而本发明公开了它们作为抗血栓抑制剂的临床应用前景。
Description
发明领域
本发明涉及氨基酸修饰的双吲哚衍生物,即2,2’-双(1H-吲哚-3-乙酰-AA-2-基)-(3-羟基-4-甲氧基苯基)-甲烷,涉及它们的合成,涉及它们的抗血栓活性,因而本发明涉及它们作为抗血栓抑制剂的临床应用前景。本发明属于生物医药领域。
背景技术
吲哚乙酸的衍生物吲哚美辛(Indomethacin)除具有抗炎以及解热镇痛作用外,还可以通过抑制血栓素TXA2的合成而抑制血小板的聚集。我们的前期发明披露,通式II的双吲哚衍生物(式中AA为氨基酸残基)在1nml/kg口服剂量下具有抗血栓活性。在急性毒性研究中,发明人发现剂量通式II的双吲哚衍生物的不能溶解。在通式II的双吲哚衍生物的代谢研究中,发明人发现大鼠的粪便中含较高量通式II的双吲哚衍生物。这些发现使发明人认识到,提高双吲哚衍生物的生物利用度至关重要。经过3年摸索,终于发现将通式II的乙基用3-羟基-4-甲氧基苯基代替,可改善生物利用度。于是,发明人提出来本发明。
发明内容
本发明的第一个内容是提供通式I的氨基酸修饰的双吲哚衍生物,即2,2’-双(1H-吲哚-3-乙酰-AA-2-基)-(3-羟基-4-甲氧基苯基)-甲烷(式中AA为L-Leu,L-Pro,Gly,L-Phe,L-Ser,L-Val,L-Thr,L-Glu,L-Lys,L-Ile,L-Asp,L-Trp,L-Ala和L-Tyr残基)。
本发明的第二个内容是提供2,2’-双(1H-吲哚-3-乙酰-AA-2-基)-(3-羟基-4-甲氧基苯基)-甲烷(其中AA为L-Leu,L-Pro,Gly,L-Phe,L-Ser,L-Val,L-Thr,L-Glu,L-Lys,L-Ile,L-Asp,L-Trp,L-Ala和L-Tyr残基)的合成方法,该方法包括:
(1)吲哚乙酸在乙醇中经浓硫酸催化,与异香草醛进行Pictet-Spengler缩合,生成2,2’-双(1H-吲哚-3-乙酸乙酯-2-基)-(3-羟基-4-甲氧基苯基)-甲烷;
(2)2,2’-双(1H-吲哚-3-乙酸乙酯-2-基)-(3-羟基-4-甲氧基苯基)-甲烷在NaOH溶液(4N)中皂化反应生成2,2’-双(1H-吲哚-3-乙酸-2-基)-(3-羟基-4-甲氧基苯基)-甲烷;
(3)2,2’-双(1H-吲哚-3-乙酸-2-基)-(3-羟基-4-甲氧基苯基)-甲烷与AA-OBzl偶联得到2,2’-双(1H-吲哚-3-乙酰-AA-OBzl-2-基)-(3-羟基-4-甲氧基苯基)-甲烷;
(4)2,2’-双(1H-吲哚-3-乙酰-Leu-OBzl-2-基)-(3-羟基-4-甲氧基苯基)-甲烷在甲醇溶液中Pd/C催化氢解生成2,2’-双(1H-吲哚-3-乙酰-AA-2-基)-(3-羟基-4-甲氧基苯基)-甲烷。
本发明的第三个内容是评价2,2’-双(1H-吲哚-3-乙酰-AA-2-基)-(3-羟基-4-甲氧基苯基)-甲烷(其中AA选自L-Leu,L-Pro,Gly,L-Phe,L-Ser,L-Val,L-Thr,L-Glu,L-Lys,L-Ile,L-Asp,L-Trp,L-Ala和L-Tyr残基)的抗栓活性。
附图说明
图1、2,2’-双(1H-吲哚-3-乙酰-AA-2-基)-(3-羟基-4-甲氧基苯基)-甲烷的合成路线.i)异香草醛,浓H2SO4,98%乙醇;ii)4N NaOH,丙酮;iii)AA-OBzl,DCC,HOBt,无水THF;iv)Pd/C,甲醇;v)AA-OBzl,DCC,HOBt,无水THF;vi)Pd/c,甲醇。在3a中AA=Leu;3b中AA=Phe;3c中AA=Asp;3d中AA=Ser;3e中AA=Val;3f中AA=Thr;3g中AA=Trp;3h中AA=Ile;3i中AA=Asp;3j中AA=Trp;3k中AA=Ala;3l中AA=Tyr.在4a中AA=Leu;4b中AA=Phe;4c中AA=Asp;4d中AA=Ser;4e中AA=Val;4f中AA=Thr;4g中AA=Trp;4h中AA=Ile;4i中AA=Asp;4j中AA=Trp;4k中AA=Ala;4l中AA=Tyr。
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2,2’-双(1H-吲哚-3-乙酸乙酯-2-基)-(3-羟基-4-甲氧基苯基)-甲烷(1)
1g(5.71mmol)吲哚-3-乙酸溶于40ml无水乙醇,滴加1ml浓硫酸,活化20min。加500mg(3.29mmol)3-羟基4-甲氧基苯基醛,室温反应6h,减压浓缩至干。柱层析纯化(石油醚/丙酮=9/1-5/1),得到870mg(57%)标题化合物,为淡黄色糖浆。ESI/MS(m/e):541[M+H]+;1HNMR(300MHz,CDCl3):δ=8.40(s,2H),7.55(m,2H),7.34(m,2H),7.13(m,4H),6.78(m,3H),6.15(m,1H),4.18(m,4H),3.83(s,3H),3.56(m,4H),1.30(m,6H)。
实施例2制备2,2’-双(1H-吲哚-3-乙酸-2-基)-(3-羟基-4-甲氧基苯基)-甲烷(2)
200mg(0.37mmol)2,2’-双(1H-吲哚-3-乙酸乙酯-2-基)-(3-羟基-4-甲氧基苯基)-甲烷(1)溶于5ml丙酮,4N NaOH调pH=12。室温反应6h。冰浴下用饱和KHSO4调pH=7,减压浓缩除去丙酮后,用饱和KHSO4调pH=2,水层用50ml乙酸乙酯萃取3遍,合并乙酸乙酯层,用饱和NaCl洗至中性,无水Na2SO4干燥。减压过滤,滤液减压浓缩至干,得到172mg(98%)标题化合物,为紫色粉末。ESI/MS(m/e):483[M-H]-;1HNMR(300MHz,DMSO-d6):δ=8.40(s,2H),7.55(m,2H),7.34(m,2H),7.13(m,4H),6.78(m,3H),6.15(m,1H),3.83(s,3H),3.56(m,4H)。
实施例3制备2,2’-双(1H-吲哚-3-乙酰-Leu-OBzl-2-基)-(3-羟基-4-甲氧基苯基)-甲烷(3a)
冰浴下将968mg(2mmol)2,2’-双(1H-吲哚-3-乙酸-2-基)-(3-羟基-4-甲氧基苯基)-甲烷(2)用无水THF溶解,先加入567mg(4.20mmol)HOBt,然后加入906mg(4.40mmol)DCC,搅拌0.5h后加入1729mg(4.40mmol)Leu-OBzl,用NMM调节pH到9,反应8h,TLC板监测(石油醚∶丙酮=1.5∶1)反应完全。滤除DCU,反应混合液减压浓缩至干,残留物用150mL乙酸乙酯溶解,滤除不溶物,得到的溶液依次用5%NaHCO3水溶液,饱和NaCl水溶液,5%KHSO4水溶液和饱和NaCl水溶液洗涤3次。乙酸乙酯层用无水Na2SO4干燥12h,过滤,滤液减压浓缩至干得到的淡黄色油状物通过硅胶柱柱层析(石油醚∶丙酮=1.5∶1)纯化,得到650mg(36%)标题化合物,为淡黄色粉末。ESI/MS(m/e):891[M+H]+;Mp 112-113℃;(c=0.14,CH3OH).1HNMR(300MHz,CDCl3):δ=10.90(s,1H),9.89(s,1H),7.49(m,2H),7.38(m,11H),7.11(m,5H),6.75(m,2H),6.61(m,1H),6.19(m,2H),5.98(s,1H),5.62(s,1H),5.27(q,J=12.3Hz,2H),5.15(s,2H),4.75(m,2H),3.88(s,3H),3.58(q,J=17.7Hz,2H),3.48(d,J=16.2Hz,1H),3.15(d,J=16.2Hz,1H),1.60(m,4H),1.29(m,2H),0.85(m,12H)。
实施例4制备2,2’-双(1H-吲哚-3-乙酰-Pro-OBzl-2-基)-(3-羟基-4-甲氧基苯基)-甲烷(3b)
采用实施例3的方法从968mg(2mmol)2,2’-双(1H-吲哚-3-乙酸-2-基)-(3-羟基-4-甲氧基苯基)-甲烷(2)和1062mg(4.40mmol)HCl·Pro-OBzl得到573mg(33%)标题化合物,为淡黄色粉末。ESI/MS(m/e):859[M+H]+,881[M+Na]+;Mp 116-117℃;(c=0.14,CH3OH).1HNMR(300MHz,CDCl3):δ=10.52(s,1H),10.27(s,1H),7.38(m,10H),7.01(m,5H),6.82(m,6H),6.19(s,1H),5.19(m,4H),4.61(m,1H),4.56(m,1H),3.88(s,3H),3.50(m,8H),2.11(m,8H)。
实施例5制备2,2’-双(1H-吲哚-3-乙酰-Gly-OBzl-2-基)-(3-羟基-4-甲氧基苯基)-甲烷(3c)
采用实施例3的方法从968mg(2mmol)2,2’-双(1H-吲哚-3-乙酸-2-基)-(3-羟基-4-甲氧基苯基)-甲烷(2)和1483mg(4.40mmol)Tos·Gly-OBzl得到467mg(30%)标题化合物,为淡黄色粉末。ESI/MS(m/e):779[M+H]+,801[M+Na]+,817[M+K]+;Mp118-119℃; (c=0.15,CH3OH).1HNMR(300MHz,CDCl3):δ=9.93(s,2H),7.51(m,2H),7.38(m,10H),7.11(m,4H),6.83(m,2H),6.74(m,2H),6.62(m,1H),6.38(m,2H),5.99(s,1H),5.70(s,1H),5.19(s,4H),4.25(dd,J=6.3,18.3Hz,2H),3.88(s,3H),3.81(dd,J=4.8,18.3Hz,2H),3.51(m,4H)。
实施例6制备2,2’-双(1H-吲哚-3-乙酰-Phe-OBzl-2-基)-(3-羟基-4-甲氧基苯基)-甲烷(3d)
采用实施例3的方法从968mg(2mmol)2,2’-双(1H-吲哚-3-乙酸-2-基)-(3-羟基-4-甲氧基苯基)-甲烷(2)和1866mg(4.40mmol)Tos·Phe-OBzl得到537mg(28%)标题化合物,为淡黄色粉末。ESI/MS(m/e):959[M+H]+,981[M+Na]+,997[M+K]+;Mp 115-116℃; (c=0.08,CH3OH).1HNMR(300MHz,CDCl3):δ=10.57(s,1H),9.66(s,1H),7.46(m,2H),7.43(m,10H),7.16(m,10H),6.87(m,4H),6.70(m,2H),6.53(m,3H),6.33(m,2H),5.88(s,1H),5.22(q,J=12Hz,2H),5.15(q,J=12Hz,2H),4.98(m,2H),3.88(s,3H),3.61(d,J=17.7Hz,1H),3.51(d,J=17.7Hz,1H),3.42(d,J=16.2Hz,1H),3.15(m,3H),2.92(d,J=6.3Hz,2H)。
实施例7制备2,2’-双(1H-吲哚-3-乙酰-Ser-OBzl-2-基)-(3-羟基-4-甲氧基苯基)-甲烷(3e)
采用实施例3的方法从968mg(2mmol)2,2’-双(1H-吲哚-3-乙酸-2-基)-(3-羟基-4-甲氧基苯基)-甲烷(2)和1018mg(4.40mmol)HCl·Ser-OBzl得到387mg(23%)标题化合物,为淡黄色粉末。ESI/MS(m/e):839[M+H]+,861[M+Na]+;Mp 111-112℃;(c=0.10,CH3OH).1HNMR(300MHz,CDCl3):δ=10.96(d,J=15.0Hz,2H),8.90(s,1H),8.62(d,J=9.0Hz,1H),8.52(d,J=9.0Hz,1H),7.58(m,2H),7.34(m,10H),7.23(m,2H),7.01(m,2H),6.92(m,2H),6.78(m,1H),6.59(s,1H),6.45(m,1H),6.17(s,1H),5.12(m,4H),4.48(m,2H),3.72(s,3H),3.61(m,4H),3.45(m,2H),3.34(m,2H)。
实施例8制备2,2’-双(1H-吲哚-3-乙酰-Val-OBzl-2-基)-(3-羟基-4-甲氧基苯基)-甲烷(3f)
采用实施例3的方法从968mg(2mmol)2,2’-双(1H-吲哚-3-乙酸-2-基)-(3-羟基-4-甲氧基苯基)-甲烷(2)和1667mg(4.40mmol)Tos·Val-OBzl得到178mg(21%)标题化合物,为淡黄色粉末。ESI/MS(m/e):863[M+H]+,885[M+Na]+;Mp 117-118℃; (c=0.11,CH3OH).1HNMR(300MHz,CDCl3):δ=11.16(s,1H),10.87(s,1H),8.89(s,1H),8.51(m,2H),7.59(m,2H),7.35(m,10H),7.22(m,2H),6.99(m,4H),6.78(m,1H),6.61(s,1H),6.47(m,1H),6.18(s,1H),5.12(d,J=9.0Hz,4H),4.27(m,2H),3.71(s,3H),3.63(m,2H),3.35(m,2H),2.05(m,2H),0.81(m,12H)。
实施例9制备2,2’-双(1H-吲哚-3-乙酰-Thr-OBzl-2-基)-(3-羟基-4-甲氧基苯基)-甲(3g)
采用实施例3的方法从968mg(2mmol)2,2’-双(1H-吲哚-3-乙酸-2-基)-(3-羟基-4-甲氧基苯基)-甲烷(2)和1080mg(4.40mmol)HCl·Thr-OBzl得到334mg(39%)标题化合物,为淡黄色粉末。ESI/MS(m/e):867[M+H]+,889[M+Na]+,905[M+K]+;Mp 119-121℃;(c=0.11,CH3OH).1HNMR(300MHz,CDCl3):δ=9.73(s,1H),9.38(s,1H),7.53(m,2H),7.35(m,12H),7.21(m,1H),7.11(m,4H),6.70(m,5H),6.08(s,1H),5.75(s,1H),5.21(d,J=12.0Hz,2H),5.05(d,J=12.0Hz,2H),4.62(m,2H),4.28(m,2H),3.79(s,3H),3.61(m,2H),3.45(m,2H),1.15(d,J=6.0Hz,3H),0.98(d,J=6.0Hz,3H)。
实施例10制备2,2’-双(1H-吲哚-3-乙酰-Glu(OBzl)-OBzl-2-基)-(3-羟基-4-甲氧基苯基)-甲烷(3h)
采用实施例3的方法从968mg(2mmol)2,2’-双(1H-吲哚-3-乙酸-2-基)-(3-羟基-4-甲氧基苯基)-甲烷(2)和1599mg(4.40mmol)HCl·Glu(OBzl)-OBzl得到538mg(24%)标题化合物,为淡黄色粉末。ESI/MS(m/e):1103[M+H]+;Mp 97-99℃;(c=0.08,CH3OH).1HNMR(300MHz,CDCl3):δ=10.43(s,1H),9.71(s,1H),7.49(d,2H),7.31(m,20H),7.22(m,2H),7.09(m,4H),6.68(m,5H),5.98(s,1H),5.79(s,1H),5.20(q,J=12.0Hz,2H),5.09(s,2H),5.01(q,J=12.0Hz,2H),4.87(q,J=12.0Hz,2H),4.72(m,1H),4.62(m,1H),3.83(s,3H),3.6(q,J=15.0Hz,2H),3.48(d,J=15.0Hz,1H),3.22(d,J=15.0Hz,1H),2.25(m,6H),1.90(m,2H)。
实施例11制备2,2’-双(1H-吲哚-3-乙酰-Lys(Fmoc)-OBzl-2-基)-(3-羟基-4-甲氧基苯基)-甲烷(3i)
采用实施例3的方法从968mg(2mmol)2,2’-双(1H-吲哚-3-乙酸-2-基)-(3-羟基-4-甲氧基苯基)-甲烷(2)和2189mg(4.40mmol)Lys(Fmoc)-OBzl得到629mg(22%)标题化合物,为淡黄色粉末。ESI/MS(m/e):1355[M+Na]+,1371[M+K]+;Mp 106-107℃;(c 0.08,CH3OH).1HNMR(300MHz,CDCl3):δ=10.64(s,1H),9.79(s,1H),7.75(m,4H),7.55(m,6H),7.35(m,14H),7.20(m,2H),7.09(m,4H),6.71(m,3H),6.44(m,1H),6.30(m,1H),6.00(s,1H),5.19(m,4H),4.68(m,4H),4.39(m,4H),3.82(m,3H),3.62(m,2H),3.51(m,1H),3.21(m,1H),2.95(m,4H),1.68(m,6H),1.25(m,4H),1.02(m,2H)。
实施例12制备2,2’-双(1H-吲哚-3-乙酰-Ile-OBzl-2-基)-(3-羟基-4-甲氧基苯基)-甲烷(3j)
采用实施例3的方法从968mg(2mmol)2,2’-双(1H-吲哚-3-乙酸-2-基)-(3-羟基-4-甲氧基苯基)-甲烷(2)和1133mg(4.40mmol)HCl·Ile-OBzl得到314mg(35%)标题化合物,为淡黄色粉末。ESI/MS(m/e):891[M+H]+,931[M+Na]+,929[M+K]+;mp 118-119℃;(c=0.10,CH3OH).1HNMR(300MHz,CDCl3):δ=10.97(s,1H),9.98(s,1H),7.49(m,2H),7.38(m,11H),7.12(m,5H),6.79(m,1H),6.72(m,1H),6.61(m,1H),6.29(m,2H),5.61(s,1H),5.25(m,4H),4.72(m,2H),3.88(s,3H),3.66(q,J=18.0Hz,2H),3.49(d,J=15.0Hz,1H),3.12(d,J=15.0Hz,1H),1.85(m,2H),1.63(s,1H),1.35(m,1H),1.05(m,2H),0.87(m,6H),0.73(d,J=6.0Hz,3H),0.61(m,3H)。
实施例13制备2,2’-双(1H-吲哚-3-乙酰-Asp(OBzl)-OBzl-2-基)-(3-羟基-4-甲氧基苯基)-甲烷(3k)
采用实施例3的方法从968mg(2mmol)2,2’-双(1H-吲哚-3-乙酸-2-基)-(3-羟基-4-甲氧基苯基)-甲烷(2)和1377mg(4.40mmol)Asp(OBzl)-OBzl得到659mg(31%)标题化合物,为淡黄色粉末。ESI/MS(m/e):1075[M+H]+;Mp 95-96℃;(c=0.13,CH3OH).1HNMR(300MHz,CDCl3):δ=10.29(s,1H),9.89(s,1H),7.45(m,2H),7.28(m,20H),7.09(m,6H),6.85(m,2H),6.73(m,2H),6.62(m,1H),6.00(s,1H),5.62(s,1H),5.13(s,2H),5.10(s,2H),4.99(m,3H),4.89(m,1H),4.78(q,J=12.0Hz,2H),3.87(s,3H),3.54(s,2H),3.49(d,J=18.0Hz,1H),3.24(d,J=18.0Hz,1H),3.00(m,4H)。
实施例14制备2,2’-双(1H-吲哚-3-乙酰-Trp-OBzl-2-基)-(3-羟基-4-甲氧基苯基)-甲烷(3l)
采用实施例3的方法从968mg(2mmol)2,2’-双(1H-吲哚-3-乙酸-2-基)-(3-羟基-4-甲氧基苯基)-甲烷(2)和1377mg(4.40mmol)HCl·Trp-OBzl得到613mg(30%)标题化合物,为淡黄色粉末。ESI/MS(m/e):1037[M+H]+;Mp 120-121℃;(c=0.08,CH3OH).1HNMR(300MHz,CDCl3):δ=10.55(s,1H),9.49(s,1H),7.49(m,2H),7.39(m,10H),7.30(m,7H),7.10(m,9H),6.71(m,1H),6.62(m,1H),6.51(m,2H),6.39(m,3H),5.79(s,1H),5.58(s,1H),5.15(m,4H),5.02(m,1H),4.91(m,1H),3.81(s,3H),3.55(q,J=15.0Hz,2H),3.32(m,3H),3.09(m,3H)。
实施例15制备2,2’-双(1H-吲哚-3-乙酰-Ala-OBzl-2-基)-(3-羟基-4-甲氧基苯基)-甲烷(3m)
采用实施例3的方法从968mg(2mmol)2,2’-双(1H-吲哚-3-乙酸-2-基)-(3-羟基-4-甲氧基苯基)-甲烷(2)和948mg(4.40mmol)HCl·Ala-OBzl得到591mg(37%)标题化合物,为淡黄色粉末。ESI/MS(m/e):807[M+H]+;Mp 113-115℃;(c=0.15,CH3OH).1HNMR(300MHz,CDCl3):δ=10.57(s,1H),9.76(s,1H),7.51(m,2H),7.38(m,11H),7.12(m,5H),6.75(m,2H),6.61(m,1H),6.35(m,2H),5.99(s,1H),5.64(s,1H),5.25(q,J=12.0Hz,2H),5.15(m,2H),4.68(m,2H),3.89(s,3H),3.65(q,J=15.0Hz,2H),3.49(d,J=15.0Hz,1H),3.21(d,J=15.0Hz,1H),1.39(d,J=9.0Hz,3H),1.35(d,J=9.0Hz,3H)。
实施例16制备2,2’-双(1H-吲哚-3-乙酰-Tyr-OBzl-2-基)-(3-羟基-4-甲氧基苯基)-甲烷(3n)
采用实施例3的方法从968mg(2mmol)2,2’-双(1H-吲哚-3-乙酸-2-基)-(3-羟基-4-甲氧基苯基)-甲烷(2)和1353mg(4.40mmol)HCl·Tyr-OBzl得到722mg(37%)标题化合物,为淡黄色粉末。ESI/MS(m/e):991[M+H]+;mp 110-111℃;(c=0.09,CH3OH).1HNMR(300MHz,CDCl3):δ=10.07(s,1H),9.18(s,1H),7.45(m,6H),7.38(m,7H),7.15(m,5H),6.70(m,2H),6.66(m,1H),6.59(m,2H),6.49(m,1H),6.35(m,2H),6.22(m,1H),5.99(m,4H),5.61(s,1H),5.25(m,4H),4.87(m,2H),3.82(s,3H),3.58(m,2H),3.20(m,3H),2.85(m,3H)。
实施例17制备2,2’-双(1H-吲哚-3-乙酰-Leu-2-基)-(3-羟基-4-甲氧基苯基)-甲烷(4a)
取100mg(0.11mmol)2,2’-双(1H-吲哚-3-乙酰-Leu-OBzl-2-基)-(3-羟基-4-甲氧基苯基)-甲烷(3a)溶于10ml甲醇中,加20mg Pd/C,通入氢气。待TLC检测(石油醚∶丙酮=1.5∶1)原料点消失,减压过滤,滤液减压浓缩得到72mg(90%)标题化合物,为紫色粉末。ESI/MS(m/e):709[M-H]-;Mp 176-178℃;(c=0.09,CH3OH).1HNMR(300MHz,DMSO-d6):δ=12.61(s,1H),11.22(s,1H),10.87(s,1H),8.99(s,1H),8.41(m,2H),7.59(m,2H),7.24(m,2H),6.99(m,4H),6.80(m,1H),6.61(s,1H),6.48(m,1H),6.70(s,1H),4.50(s,1H),4.25(m,2H),3.73(s,3H),3.41(m,4H),1.51(m,6H),0.80(m,12H)。
实施例18制备2,2’-双(1H-吲哚-3-乙酰-Pro-2-基)-(3-羟基-4-甲氧基苯基)-甲烷(4b)
采用实施例17的方法从100mg(0.12mmol)2,2’-双(1H-吲哚-3-乙酰-Pro-OBzl-2-基)-(3-羟基-4-甲氧基苯基)-甲烷(3b)得到65mg(82%)标题化合物,为紫色粉末。ESI/MS(m/e):677[M-H]-;Mp 170-172℃;(c=0.12,CH3OH).1HNMR(300MHz,DMSO-d6):δ=12.50(s,1H),10.73(m,2H),8.99(s,1H),7.49(m,2H),7.25(m,2H),6.99(m,4H),6.88(m,2H),6.51(s,2H),6.02(s,1H),4.22(m,2H),3.72(s,3H),3.39(m,8H),2.05(m,2H),1.80(m,6H)。
实施例19制备2,2’-双(1H-吲哚-3-乙酰-Gly-2-基)-(3-羟基-4-甲氧基苯基)-甲烷(4c)
采用实施例17的方法从100mg(0.13mmol)2,2’-双(1H-吲哚-3-乙酰-Gly-OBzl-2-基)-(3-羟基-4-甲氧基苯基)-甲烷(3c)得到68mg(89%)标题化合物,为紫色粉末。ESI/MS(m/e):597[M-H]-;Mp 155-157℃;(c 0.14,CH3OH).1HNMR(300MHz,DMSO-d6):δ=11.10(s,1H),10.89(s,2H),8.99(s,1H),8.58(m,2H),7.51(m,2H),7.25(m,2H),6.95(m,4H),6.71(m,1H),6.68(m,1H),6.60(m,1H),6.00(s,1H),4.45(m,4H),3.72(s,3H),3.44(m,4H)。
实施例20制备2,2’-双(1H-吲哚-3-乙酰-Phe-2-基)-(3-羟基-4-甲氧基苯基)-甲烷(4d)
采用实施例17的方法从100mg(0.10mmol)2,2’-双(1H-吲哚-3-乙酰-Phe-OBzl-2-基)-(3-羟基-4-甲氧基苯基)-甲烷(3d)得到70mg(86%)标题化合物,为紫色粉末。ESI/MS(m/e):777[M-H]-;Mp 165-167℃;(c=0.11,CH3OH).1HNMR(300MHz,DMSO-d6):δ=12.73(s,1H),11.05(s,1H),10.78(s,1H),8.91(s,1H),8.43(m,2H),7.42(m,1H),7.20(m,13H),6.99(m,2H),6.88(m,2H),6.76(m,1H),6.58(s,1H),6.40(m,1H),6.08(s,1H),4.46(m,2H),3.71(s,3H),3.28(m,4H),3.02(m,2H),2.86(m,2H)。
实施例21制备2,2’-双(1H-吲哚-3-乙酰-Ser-2-基)-(3-羟基-4-甲氧基苯基)-甲烷(4e)
采用实施例17的方法从100mg(0.12mmol)2,2’-双(1H-吲哚-3-乙酰-Ser-OBzl-2-基)-(3-羟基-4-甲氧基苯基)-甲烷(3e)得到68mg(87%)标题化合物,为紫色粉末。ESI/MS(m/e):657[M-H]-;Mp 176-178℃;(c=0.08,CH3OH).1HNMR(300MHz,DMSO-d6):δ=11.05(d,J=4.8Hz,2H),8.91(s,1H),8.43(d,J=8.1Hz,1H),8.38(d,J=8.1Hz,1H),7.61(m,2H),7.25(m,2H),5.99(m,4H),6.81(m,1H),6.59(s,1H),6.46(m,1H),6.19(s,1H),4.33(m,2H),3.72(s,3H),3.60(m,4H),3.41(m,4H)。
实施例22制备2,2’-双(1H-吲哚-3-乙酰-Val-2-基)-(3-羟基-4-甲氧基苯基)-甲烷(4f)
采用实施例17的方法从100mg(0.12mmol)2,2’-双(1H-吲哚-3-乙酰-Val-OBzl-2-基)-(3-羟基-4-甲氧基苯基)-甲烷(3f)得到60mg(76%)标题化合物,为紫色粉末。ESI/MS(m/e):681[M-H]-;Mp 168-169℃;(c=0.09,CH3OH).1HNMR(300MHz,DMSO-d6):δ=11.33(s,1H),10.90(s,1H),8.98(s,1H),8.39(m,2H),7.61(m,2H),7.25(m,2H),6.98(m,4H),6.80(m,1H),6.61(s,1H),6.49(m,1H),6.19(s,1H),4.21(m,2H),3.72(s,3H),3.38(m,4H),2.03(m,2H),0.83(m,12H)。
实施例23制备2,2’-双(1H-吲哚-3-乙酰-Thr-2-基)-(3-羟基-4-甲氧基苯基)-甲烷(4g)
采用实施例17的方法从100mg(0.12mmol)2,2’-双(1H-吲哚-3-乙酰-Thr-OBzl-2-基)-(3-羟基-4-甲氧基苯基)-甲烷(3g)得到66mg(83%)标题化合物,为紫色粉末。ESI/MS(m/e):685[M-H]-;Mp178-179℃;(c 0.07,CH3OH).1HNMR(300MHz,DMSO-d6):δ=11.33(s,1H),11.02(s,1H),8.93(s,1H),8.30(d,J=7.8Hz,2H),7.65(m,2H),7.25(m,2H),6.99(m,4H),6.80(m,1H),6.61(s,1H),6.45(m,1H),6.20(s,1H),4.28(m,2H),4.15(m,2H),3.72(s,3H),3.61(m,2H),3.32(m,2H),0.99(m,6H)。
实施例24制备2,2’-双(1H-吲哚-3-乙酰-Glu-2-基)-(3-羟基-4-甲氧基苯基)-甲烷(4h)
采用实施例17的方法从100mg(0.09mmol)2,2’-双(1H-吲哚-3-乙酰-Glu(OBzl)-OBzl-2-基)-(3-羟基-4-甲氧基苯基)-甲烷(3h)得到58mg(86%)标题化合物,为紫色粉末。ESI/MS(m/e):741[M-H]-;Mp 176-178℃;(c=0.10,CH3OH).1HNMR(300MHz,DMSO-d6):δ=12.50(s,2H),11.18(s,1H),10.90(s,1H),8.93(s,1H),8.50(m,2H),7.58(m,2H),7.23(m,2H),5.99(m,4H),6.80(m,1H),6.61(s,1H),6.48(m,1H),6.15(s,1H),4.25(m,2H),3.72(s,3H),3.38(m,4H),2.26(m,4H),1.95(m,2H),1.79(m,2H)。
实施例25制备2,2’-双(1H-吲哚-3-乙酰-Lys-2-基)-(3-羟基-4-甲氧基苯基)-甲烷(4i)
采用实施例17的方法从100mg(0.07mmol)2,2’-双(1H-吲哚-3-乙酰-Lys(Fmoc)-OBzl-2-基)-(3-羟基-4-甲氧基苯基)-甲烷(3i)得到45mg(87%)标题化合物,为紫色粉末。ESI/MS(m/e):739[M-H]-;Mp 176-178℃;(c=0.16,CH3OH).1HNMR(300MHz,DMSO-d6):δ=12.24(s,1H),10.91(s,1H),8.90(s,1H),8.49(m,1H),7.61(m,1H),7.39(m,1H),7.26(m,2H),6.99(m,4H),6.82(m,1H),6.59(s,1H),6.48(m,1H),6.12(s,1H),4.23(m,2H),3.74(s,3H),3.38(m,4H),2.69(m,4H),1.62(m,6H),1.45(m,4H),1.02(m,2H)。
实施例26制备2,2’-双(1H-吲哚-3-乙酰-Ile-2-基)-(3-羟基-4-甲氧基苯基)-甲烷(4j)
采用实施例17的方法从100mg(0.11mmol)2,2’-双(1H-吲哚-3-乙酰-Ile-OBzl-2-基)-(3-羟基-4-甲氧基苯基)-甲烷(3j)得到71mg(89%)标题化合物,为紫色粉末。ESI/MS(m/e):709[M-H]-;Mp 166-168℃;(c=0.09,CH3OH).1HNMR(300MHz,DMSO-d6):δ=12.69(s,1H),11.31(s,1H),10.90(s,1H),8.89(s,1H),8.36(m,2H),7.59(m,2H),7.23(m,2H),6.98(m,4H),6.80(m,1H),6.60(s,1H),6.45(m,1H),6.19(s,1H),4.23(m,2H),3.72(s,3H),3.61(m,2H),3.31(m,2H),1.74(m,2H),1.38(m,2H),1.14(m,2H),0.80(s,12H)。
实施例27制备2,2’-双(1H-吲哚-3-乙酰-Asp-2-基)-(3-羟基-4-甲氧基苯基)-甲烷(4k)
采用实施例17的方法从100mg(0.09mmol)2,2’-双(1H-吲哚-3-乙酰-Asp(OBzl)-OBzl-2-基)-(3-羟基-4-甲氧基苯基)-甲烷(3k)得到55mg(83%)标题化合物,为紫色粉末。ESI/MS(m/e):713[M-H]-;Mp 176-178℃;(c=0.09,CH3OH).1HNMR(300MHz,DMSO-d6):δ=12.71(s,3H),11.08(s,1H),10.95(s,1H),8.92(s,1H),8.56(m,2H),7.53(m,2H),7.25(m,2H),6.99(m,4H),6.80(m,1H),6.59(s,1H),6.45(m,1H),6.12(s,1H),4.57(m,2H),3.72(s,3H),3.38(m,2H),3.17(s,2H),2.59(m,4H)。
实施例28制备2,2’-双(1H-吲哚-3-乙酰-Trp-2-基)-(3-羟基-4-甲氧基苯基)-甲烷(4l)
采用实施例17的方法从100mg(0.10mmol)2,2’-双(1H-吲哚-3-乙酰-Trp-OBzl-2-基)-(3-羟基-4-甲氧基苯基)-甲烷(3l)得到70mg(85%)标题化合物,为紫色粉末。ESI/MS(m/e):855[M-H]-;Mp 165-168℃;(c=0.09,CH3OH).1HNMR(300MHz,DMSO-d6):δ=12.71(s,1H),11.11(s,1H),10.89(m,3H),8.93(s,1H),8.50(m,2H),7.53(m,2H),7.41(m,1H),7.34(m,2H),7.19(m,4H),7.01(m,7H),6.84(m,2H),6.71(m,1H),6.59(s,1H),6.39(m,1H),6.08(s,1H),4.51(m,2H),3.67(s,3H),3.38(m,4H),3.17(s,2H),3.04(m,2H)。
实施例29制备2,2’-双(1H-吲哚-3-乙酰-Ala-2-基)-(3-羟基-4-甲氧基苯基)-甲烷(4m)
采用实施例17的方法从100mg(0.12mmol)2,2’-双(1H-吲哚-3-乙酰-Ala-OBzl-2-基)-(3-羟基-4-甲氧基苯基)-甲烷(3m)得到66mg(86%)标题化合物,为紫色粉末。ESI/MS(m/e):625[M-H]-;Mp 167-169℃;(c=0.07,CH3OH).1HNMR(300MHz,DMSO-d6):δ=11.09(s,1H),10.91(s,1H),8.95(s,1H),8.44(d,J=7.5Hz,1H),8.38(d,J=7.5Hz,1H),7.58(m,2H),7.25(m,2H),6.98(m,4H),6.81(m,1H),6.59(s,1H),6.47(m,1H),6.13(s,1H),4.21(m,2H),3.72(s,3H),3.41(m,4H),1.22(m,6H)。
实施例30制备2,2’-双(1H-吲哚-3-乙酰-Tyr-2-基)-(3-羟基-4-甲氧基苯基)-甲烷(3n)
采用实施例17的方法从100mg(0.10mmol)2,2’-双(1H-吲哚-3-乙酰-Tyr-OBzl-2-基)-(3-羟基-4-甲氧基苯基)-甲烷(3n)得到70mg(86%)标题化合物,为紫色粉末。ESI/MS(m/e):809[M-H]-;Mp 173-175℃;(c=0.07,CH3OH).1HNMR(300MHz,DMSO-d6):δ=12.75(s,1H),10.95(s,1H),10.80(m,1H),9.10(m,2H),8.41(m,2H),7.41(m,1H),7.21(m,3H),6.95(m,8H),6.78(m,1H),6.61(m,5H),6.41(m,1H),6.08(s,1H),4.36(m,2H),3.71(s,3H),3.38(m,4H),2.92(m,2H),2.75(m,2H)。
实施例31评价4a-n的抗血栓活性
1)聚乙烯管的组装:将聚乙烯管拉成一端为斜口的细管,定长为10.0cm,分别为右经静脉(管径较粗)及左颈动脉(管径较细)插管;中段聚乙烯管定长为8.0cm,血栓线压在颈动脉插管方向,插管前需在管中充满肝素。
2)SD大鼠以0.1nmol/kg剂量4a-n灌胃,30分钟后腹腔注射20%的乌拉坦进行麻醉。仰卧位将大鼠固定于鼠板上,剪开颈部皮肤,分离右颈总动脉及左颈静脉,血管下压线,结扎远心端,静脉靠远心端处剪一小口,进行静脉端插管,注射肝素,系线固定,再用动脉夹夹住动脉近心端,靠近远心端方向剪一小口,进行动脉端结扎,系线固定后松开动脉夹,建立体外循环旁路。循环15分钟后先剪断静脉端观察血液循环是否正常,若正常从动脉端取出血栓线,在纸上沾干浮血后称量并记录其湿重,大鼠断颈处死。每组大鼠10只,最后进行数据统计并评价化合物活性。以栓重表示化合物的活性。表1的数据表明,4a-n具有优秀的抗血栓活性,有效剂量低达0.1nmol/kg,比发明人先前公开的双吲哚化合物的有效剂量低10倍,获得了显著的技术效果。在这些化合物中,4a-e,h-l,n的有效剂量是阿司匹林的1/1670000。
表1化合物4a-n对SD大鼠栓重的影响
n=10;a)与生理盐水比p<0.01,与阿司匹林比p>0.05;b)与生理盐水比p<0.01。
Claims (3)
1.通式I的氨基酸修饰的双吲哚衍生物,即2,2’-双-1H-吲哚-3-乙酰-AA-2-基-3-羟基-4-甲氧基苯基-甲烷,式中AA为L-Leu,L-Pro,Gly,L-Phe,L-Ser,L-Val,L-Thr,L-Glu,L-Lys,L-Ile,L-Asp,L-Trp,L-Ala和L-Tyr残基
2.权利要求1的2,2’-双-1H-吲哚-3-乙酰-AA-2-基-3-羟基-4-甲氧基苯基-甲烷的制备方法,该方法包括:
(1)吲哚乙酸在乙醇中经浓硫酸催化,与异香草醛进行Pictet-Spengler缩合,生成2,2’-双-1H-吲哚-3-乙酸乙酯-2-基-3-羟基-4-甲氧基苯基-甲烷;
(2)2,2’双-1H-吲哚-3-乙酸乙酯-2-基-3-羟基-4-甲氧基苯基-甲烷在4NNaOH溶液中皂化反应生成2,2’-双-1H-吲哚-3-乙酸-2-基-3-羟基-4-甲氧基苯基-甲烷;
(3)2,2’-双-1H-吲哚-3-乙酸-2-基-3-羟基-4-甲氧基苯基-甲烷与AA-OBzl偶联得到2,2’-双-1H-吲哚-3-乙酰-AA-OBzl-2-基-3-羟基-4-甲氧基苯基-甲烷;
(4)2,2’-双-1H-吲哚-3-乙酰-Leu-OBzl-2-基-3-羟基-4-甲氧基苯基-甲烷在甲醇溶液中Pd/C催化氢解生成2,2’-双-1H-吲哚-3-乙酰-AA-2-基-3-羟基-4-甲氧基苯基-甲烷。
3.权利要求1的2,2’-双-1H-吲哚-3-乙酰-AA-2-基-3-羟基-4-甲氧基苯基-甲烷在制备抗血栓药物中的应用。
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