CN111233795B - 一种手性γ-丁内酯类化合物及其衍生物的制备方法及其应用 - Google Patents
一种手性γ-丁内酯类化合物及其衍生物的制备方法及其应用 Download PDFInfo
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- C—CHEMISTRY; METALLURGY
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- C07D307/00—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom
- C07D307/02—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings
- C07D307/26—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings having one double bond between ring members or between a ring member and a non-ring member
- C07D307/30—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings having one double bond between ring members or between a ring member and a non-ring member with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
- C07D307/32—Oxygen atoms
- C07D307/33—Oxygen atoms in position 2, the oxygen atom being in its keto or unsubstituted enol form
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P35/00—Antineoplastic agents
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D307/00—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom
- C07D307/94—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom spiro-condensed with carbocyclic rings or ring systems, e.g. griseofulvins
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- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
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Abstract
本申请公开了一种手性γ‑丁内酯类化合物及其衍生物的制备方法及其应用。本发明利用醛类化合物与2‑呋喃酮进行有机催化不对称Michael加成反应。该发明提供了一种有效的方法将手性γ‑丁内酯与三个连续的手性碳相结合,得到产率达到89%、dr=9.2:1和99%ee的手性γ‑丁内酯类化合物及其衍生物。另外,将本申请得到的一种手性γ‑丁内酯衍生物进行细胞活性测试,得出该化合物能够对U251、Saos2、MGC803、293T和Hela细胞系增殖均有抑制效应,可作为对多种肿瘤治疗中的广谱药物的应用。
Description
技术领域
本发明属于医药化合物合成领域,涉及一种手性γ-丁内酯类化合物及其衍生物的制备方法及其应用。
背景技术
γ-丁内酯骨架广泛存在于各种天然产物中,有重要的生物活性,如抗炎、抗癌和抗病毒等。基于呋喃酮的Michael加成反应是构建γ-丁内酯类化合物常用的方法之一。近年来,有机小分子催化的不对称反应以其反应条件温和、立体选择性高和易回收等优点受到高度重视。基于此,我们开展了基于呋喃酮骨架构建手性γ-丁内酯类化合物的有机小分子催化不对称反应研究。多官能团的γ-丁内酯化合物是合成一系列天然产物的重要中间体。因此,构建多手性中心、多官能团的γ-丁内酯类化合物一直是有机合成研究的热点。
2(5H)-呋喃酮是最简单的α,β-不饱和丁内酯,通过对其修饰,可以合成一系列不同取代的2(5H)-呋喃酮,而使用亲核试剂进攻2(5H)-呋喃酮或其衍生物可以合成各种取代的γ-丁内酯类化合物,是合成γ-丁内酯类化合物最常见的方法。
此外,由于醛的结构特点,在羰基中的π键极化,使得氧原子上带部分负电荷,而碳原子上带部分正电荷。反应中,分子中的碳氧双键很容易被亲核试剂进攻,并发生反应。并且受羰基的影响导致与羰基直接相连的碳原子上的氢很活泼,能发生一系列反应。
然而,目前没有报道称可以将醛与2(5H)-呋喃酮进行不对称地迈克尔加成以合成手性γ-丁内酯,简单、快速有效地构建多手性中心的方法,并且手性γ-丁内酯化合物对于环境条件要求严格,容易进行消旋化,从而使化合物构型改变。本发明则克服上述问题,开发了一种手性γ-丁内酯类化合物及制备方法并研究了改化合物的细胞活性。
发明内容
为实现上述目的,本申请提供的技术方案如下:一种涉及通式(I)所示的手性γ-丁内酯类化合物及制备方法,该方法包括:在有机溶剂及手性催化剂的存在下,将化合物1A、化合物2A进行反应,反应结束后处理,从而得到一种手性γ-丁内酯类化合物,结构式:
其中,R1、R2=甲基、乙基、丙基、丁基、戊基、异丙基、环己基、氢;
R3=甲基、乙基、丙基、丁基、戊基、异丙基、己基、庚基、辛基、苄基、苯环;
R4=甲基、乙基、丙基、丁基、戊基、异丙基、己基、庚基、酯基、辛基、氢、苄基、苯环、烯丙基、氯丙基、十一烷基、十二烷基、苯环;
R5=甲基、乙基、丙基、丁基、戊基、异丙基、己基、庚基、辛基、氢、苄基、苯环、烯丙基、氯丙基、十一烷基、十二烷基、酯基。
进一步地,一种手性γ-丁内酯类化合物,结构式:
进一步地,化合物1A和化合物2A的制备方法为:
化合物1A和化合物2A反应结束后的后处理为:反应结束后,停止反应,萃取,洗涤,分液,干燥,抽滤,旋干,分离纯化旋干,得到化合物3A。
进一步地,将以上一种手性γ-丁内酯化合物进一步反应,从而得到一种通式(II)所示的手性γ-丁内酯类化合物,其结构式:
其中,R1、R2=甲基、乙基、丙基、丁基、戊基、异丙基、环己基、氢;
R3=甲基、乙基、丙基、丁基、戊基、异丙基、己基、庚基、辛基、苄基、苯环;
R4=甲基、乙基、丙基、丁基、戊基、异丙基、己基、庚基、辛基、氢、苄基、酯基、烯丙基、氯丙基、十一烷基、十二烷基、苯环;
R5=甲基、乙基、丙基、丁基、戊基、异丙基、己基、庚基、辛基、氢、苄基、苯环、烯丙基、氯丙基、十一烷基、十二烷基、酯基。
进一步地,一种手性γ-丁内酯类化合物3A与对甲基苯磺酰肼的制备方法为:
一种手性γ-丁内酯类化合物3A与对甲基苯磺酰肼进行反应,反应结束后经过抽滤,旋干,分离纯化旋干的后处理,从而得到一种手性γ-丁内酯类化合物4A。
另外,所述的一种手性γ-丁内酯类化合物通式(II)化合物,其结构式:
在本发明所述的一种手性γ-丁内酯类化合物的制备方法中,所述手性催化剂包括下列化合物,其中,最优选为手性催化剂II。
化合物1A和化合物2A的摩尔量之比为1:0.5-5,其中,化合物1A和手性催化剂的最优摩尔比为1:0.2。
本发明所述溶剂选自甲苯、二氯甲烷、三氯甲烷、1,2-二氯乙烷、甲醇、异丙醇、乙醇、乙腈、N,N-二甲基甲酰胺、四氢呋喃、乙醚、乙酸乙酯、1,4-二氧六环或石油醚中的一种或多种混合物,其中最优溶剂为甲苯。
在本发明所述的一种手性γ-丁内酯类化合物的制备方法中,一种手性γ-丁内酯类化合物2A选自选自C1-C12的无环脂肪醛、C1-C12的芳香醛、C1-C12的烯烃醛、C1-C12含杂原子的醛或C1-C12含α-氢的醛。非限定地,例如可为正丁醛、正丙醛、正戊醛、异戊醛、己醛、苯乙醛、苯丙醛、4-戊烯醛、辛醛、5-氯戊醛、十二醛或6-氧代己酸甲酯。
化合物1A与手性催化剂的摩尔量之比为1:0.5-5,其中化合物1A与化合物2A的最优摩尔比为1:2。
在本发明所述的一种手性γ-丁内酯类化合物的制备方法中,反应温度为室温25-30℃,例如可为25℃、27℃或30℃。
在本发明所述的一种手性γ-丁内酯类化合物的制备方法中,反应时间为12-48小时,例如可为12小时、16小时、18小时、16小时、24小时或48小时。
进一步地,另外,将上述一种手性γ-丁内酯类化合物3A继续与对甲基苯磺酰肼反应,得到一种手性γ-丁内酯衍生物,结构式:
进一步地,在本发明所述的一种手性γ-丁内酯衍生物的制备方法中,一种手性γ-丁内酯衍生物3au反应及反应结束后的处理方法如下:化合物1a和化合物2a反应结束后,停止反应,萃取,分液,分离提纯旋干,从而得到手性γ-丁内酯化合物3aa。将化合物3aa与甲醇和硼氢化钠混合,反应结束后停止反应,分离提纯旋干,得产物。
在本发明所述的一种手性γ-丁内酯衍生物的制备方法中,一种手性γ-丁内酯衍生物3aw反应及反应结束后的处理方法如下:反应结束后,萃取,分液,旋干,分离提纯旋干,从而得到手性γ-丁内酯化合物3aa。在3aa中加入溶剂,并将混合液暴露在空气中搅拌,至完全氧化,结束反应,分离提纯旋干,得产物。
在本发明所述的一种手性γ-丁内酯衍生物的制备方法中,一种手性γ-丁内酯衍生物3av反应及反应结束后的处理方法如下:在化合物3aw中加入溶剂,搅拌,加入手性催化剂。反应结束,停止反应,旋干,分离提纯,旋干,得产物。
在本发明所述的一种手性γ-丁内酯衍生物的制备方法中,一种手性γ-丁内酯衍生物3at反应及反应结束后的处理方法如下:反应结束后,萃取,旋干,分离提纯旋干,从而得到手性γ-丁内酯化合物3aa。在化合物3aa中加入溶剂,加入甲氧甲酰基亚甲基三苯基膦,反应结束后,萃取,分液,旋干,分离提纯旋干,得产物。
进一步地,一种手性γ-丁内酯类化合物和衍生物及其制备方法在制备用于抗肿瘤的药物方面的应用,所述肿瘤细胞选自人神经胶质细胞瘤细胞、肺癌细胞、乳腺癌细胞、肝癌细胞、胃癌细胞、宫颈癌细胞、卵巢癌细胞、前列腺癌细胞、胰腺癌细胞、食道癌细胞、人成骨肉瘤细胞或上皮癌细胞。
另外,本发明所制备的衍生物在指数生长期细胞株上进行细胞毒活性实验,以小白菊内酯和顺铂作为对照组。结果表明所制备的化合物3av一种手性γ-丁内酯反应的衍生物对U251、Saos2细胞有抑制活性,对U251细胞的抑制率为23.61,对Saos2细胞的抑制率为15.35,MGC803细胞的抑制率为5.22,293T细胞的抑制率为5.78,对Hela细胞的抑制率为2.24。由此可以看出,本发明的化合物3av作为抑制细胞增殖药物具有一定应用价值。
附图说明
图1是本发明实施例1中化合物3aa的核磁氢谱的示意图;
图2是本发明实施例1中化合物3aa的核磁碳谱的示意图;
图3是本发明实施例1中化合物3aa的高效液相图谱的示意图。
有益效果
本发明利用醛类化合物与2-呋喃酮的有机催化不对称Michael加成反应,提供了一种有效的方法将手性γ-丁内酯与三个连续的手性碳相结合,得到产率达到89%,立体选择性达到9.2:1dr和99%ee的手性γ-丁内酯化合物及其衍生物。另外,将本申请得到的一种手性γ-丁内酯衍生物进行细胞活性测试,从而得出该化合物能够对U251、Saos2、MGC803、293T和Hela细胞系增殖有抑制效应,可作为对多种肿瘤治疗中的广谱药物的应用。
具体实施方式
1.化合物3aa的制备
取1a(1.0mmol,36.8mg,1.0eq.),催化剂(0.2mmol,26mg,0.2eq.),甲苯(2.0mL),2a(2.0mmol,28.8mg,2.0eq.),氮气保护,室温下搅拌反应24小时。反应结束后,加入少量饱和氯化铵,用乙酸乙酯萃取3次,往酯层中加入无水硫酸钠干燥0.5小时,抽滤,旋干,过硅胶柱色谱,以乙酸乙酯:石油醚=1:4作为冲洗剂,分离纯化,旋干,加入2.0mL二氯甲烷,并在低于0℃搅拌的情况下加入对甲基苯磺酰肼(1.5mmol,1.5eq.),加入足量无水硫酸镁,搅拌,室温下反应24小时,抽滤,旋干,过硅胶柱色谱,以乙酸乙酯:石油醚=1:2作为冲洗剂,分离提纯,旋干,得产物3aa。
产率:87%。1H NMR(400MHz,CDCl3)δ8.16–7.72(m,3H),7.39–7.29(m,2H),6.91–6.72(m,1H),4.37–4.04(m,2H),3.52–3.28(m,1H),2.89–2.66(m,1H),2.43(d,J=3.6Hz,3H),1.38–1.05(m,11H),0.66(m,3H).13C NMR(151MHz,CDCl3)δ170.0,168.3,151.76,144.5,135.3,129.8,128.0,85.7,62.5,52.2,51.2,44.4,27.8,24.1,22.9,21.6,14.0,11.3.HPLC(CHIRAL-AD-H,228nm,hexane:i-PrOH=85:15,1.0mL/min,tR1(minor)=21.857min,tR1(minor)=26.117min,tR2(major)=33.801min,tR2(minor)=46.868min).dr=8.3:1.99%ee.ES-HRMS:Calcd for C21H31N2O6S[M+H],439.1903,Found 439.1896.
2.化合物3ab的制备
取1a(1.0mmol,36.8mg,1.0eq.),催化剂(0.2mmol,26mg,0.2eq.),甲苯(2.0mL),2b(2.0mmol,23.2mg,2.0eq.),氮气保护,室温下搅拌反应24小时。反应结束后,加入少量饱和氯化铵,用乙酸乙酯萃取3次,往酯层中加入无水硫酸钠干燥0.5小时,抽滤,旋干,过硅胶柱色谱,以乙酸乙酯:石油醚=1:4作为冲洗剂,分离纯化,旋干,加入2.0mL二氯甲烷,并在低于0℃搅拌的情况下加入对甲基苯磺酰肼(1.5mmol,1.5eq.),加入足量无水硫酸镁,搅拌,室温下反应24小时,抽滤,旋干,过硅胶柱色谱,以乙酸乙酯:石油醚=1:2作为冲洗剂,分离提纯,旋干,得产物3ab。
产率:88%。1H NMR(400MHz,CDCl3)δ7.97(s,1H),7.81(d,J=8.2Hz,2H),7.33(d,J=8.1Hz,2H),6.90(d,J=7.9Hz,1H),4.26(q,J=7.1Hz,2H),3.41(d,J=12.0Hz,1H),2.73(t,J=11.4Hz,1H),2.60–2.48(m,1H),2.44(s,3H),1.30(t,J=7.1Hz,3H),1.06(d,J=8.6Hz,6H),0.98(d,J=6.8Hz,3H).13C NMR(100MHz,CDCl3)δ169.8,168.2,152.3,144.6,135.2,129.8,128.1,85.5,62.5,52.1,52.0,37.6,29.7,27.7,22.9,21.6,16.9,14.0.HPLC(CHIRAL-AD-H,254nm,hexane:i-PrOH=90:10,2.0mL/min,tR1(minor)=40.310min,tR1(major)=54.120min).dr=9.2:1.86%ee.ES-HRMS:Calcd for C19H27N2O6S[M+H],411.1590,Found 411.1580.
3.化合物3ac的制备
取1a(1.0mmol,36.8mg,1.0eq.),催化剂(0.2mmol,26mg,0.2eq.),甲苯(2.0mL),2c(2.0mmol,34.4mg,2.0eq.),氮气保护,室温下搅拌反应24小时。反应结束后,加入少量饱和氯化铵,用乙酸乙酯萃取3次,往酯层中加入无水硫酸钠干燥0.5小时,抽滤,旋干,过硅胶柱色谱,以乙酸乙酯:石油醚=1:4作为冲洗剂,分离纯化,旋干,加入2.0mL二氯甲烷,并在低于0℃搅拌的情况下加入对甲基苯磺酰肼(1.5mmol,1.5eq.),加入足量无水硫酸镁,搅拌,室温下反应24小时,抽滤,旋干,过硅胶柱色谱,以乙酸乙酯:石油醚=1:2作为冲洗剂,分离提纯,旋干,得产物3ac。
产率:85%。1H NMR(400MHz,CDCl3)δ8.22–8.11(m,1H),7.86(t,J=9.0Hz,2H),7.38(dd,J=8.0,3.5Hz,2H),6.86(dd,J=15.2,8.2Hz,1H),4.44–4.13(m,2H),3.49(dd,J=15.3,12.1Hz,1H),2.92–2.75(m,1H),2.50(d,J=2.5Hz,3H),2.48–2.39(m,1H),1.48–1.28(m,9H),1.16(d,J=6.4Hz,3H),1.09–0.92(m,2H),0.86–0.77(m,3H).13CNMR(100MHz,CDCl3)δ170.0,169.6,168.3,168.1,152.1,151.7,144.5,144.4,135.2,135.1,129.8,129.7,128.1,127.9,85.7,85.3,62.6,62.4,52.2,51.9,51.4,51.1,42.8,42.8,33.2,33.1,29.1,27.8,23.0,22.7,21.6,20.0,20.0,14.1,14.0,13.7,13.5.HPLC(CHIRAL-AD-H,228nm,hexane:i-PrOH=90:10,1.0mL/min,tR1(minor)=28.225min,tR1(major)=36.245min,tR2(major)=48.591min,tR2(minor)=56.932min).dr=5.4:1.93.2%ee.ES-HRMS:Calcd for C21H31N2O6S[M+H],439.1903,Found 439.1896.
4.化合物3ad的制备
取1a(1.0mmol,36.8mg,1.0eq.),催化剂(0.2mmol,26mg,0.2eq.),甲苯(2.0mL),2d(2.0mmol,34.4mg,2.0eq.),氮气保护,室温下搅拌反应24小时。反应结束后,加入少量饱和氯化铵,用乙酸乙酯萃取3次,往酯层中加入无水硫酸钠干燥0.5小时,抽滤,旋干,过硅胶柱色谱,以乙酸乙酯:石油醚=1:4作为冲洗剂,分离纯化,旋干,加入2.0mL二氯甲烷,并在低于0℃搅拌的情况下加入对甲基苯磺酰肼(1.5mmol,1.5eq.),加入足量无水硫酸镁,搅拌,室温下反应24小时,抽滤,旋干,过硅胶柱色谱,以乙酸乙酯:石油醚=1:2作为冲洗剂,分离提纯,旋干,得产物3ad。
产率:53%。1H NMR(400MHz,CDCl3)δ7.75–7.69(m,2H),7.23(d,J=8.0Hz,2H),6.81(d,J=8.5Hz,1H),4.24–4.03(m,2H),3.29(d,J=12.3Hz,1H),2.91(dd,J=12.2,9.2Hz,1H),2.35(s,3H),2.21–2.17(m,1H),1.77–1.66(m,1H),1.47(s,3H),1.25(t,J=7.1Hz,3H),1.14(s,3H),0.78(d,J=6.8Hz,3H),0.62(d,J=6.7Hz,3H).13C NMR(100MHz,CDCl3)δ168.8,167.2,149.2,143.3,134.2,128.6,126.8,84.6,61.6,50.7,47.4,47.3,27.5,27.4,21.5,20.5,20.3,16.0,13.0.HPLC(CHIRAL-AD-H,228nm,hexane:i-PrOH=90:10,1.0mL/min,tR1(minor)=28.455min,tR1(major)=41.080min).dr=6.4:1.94.8%ee.ES-HRMS:Calcd for C21H31N2O6S[M+H],439.1903,Found 439.1910.
5.化合物3ae的制备
取1a(1.0mmol,36.8mg,1.0eq.),催化剂(0.2mmol,26mg,0.2eq.),甲苯(2.0mL),2e(2.0mmol,40.1mg,2.0eq.),氮气保护,室温下搅拌反应24小时。反应结束后,加入少量饱和氯化铵,用乙酸乙酯萃取3次,往酯层中加入无水硫酸钠干燥0.5小时,抽滤,旋干,过硅胶柱色谱,以乙酸乙酯:石油醚=1:4作为冲洗剂,分离纯化,旋干,加入2.0mL二氯甲烷,并在低于0℃搅拌的情况下加入对甲基苯磺酰肼(1.5mmol,1.5eq.),加入足量无水硫酸镁,搅拌,室温下反应24小时,抽滤,旋干,过硅胶柱色谱,以乙酸乙酯:石油醚=1:2作为冲洗剂,分离提纯,旋干,得产物3ae。
产率:82%。1H NMR(400MHz,CDCl3)δ8.07(d,J=8.5Hz,1H),7.80(dd,J=11.5,5.9Hz,2H),7.31(t,J=6.3Hz,2H),6.79(dd,J=12.7,8.2Hz,1H),4.39–4.13(m,2H),3.43(dd,J=17.4,12.1Hz,1H),2.80–2.69(m,1H),2.41(s,3H),2.40–2.30(m,1H),1.54(s,3H),1.41–1.05(m,10H),0.97–0.83(m,2H),0.73(t,J=7.4Hz,3H).13C NMR(100MHz,CDCl3)δ169.6,168.1,152.1,144.4,135.1,129.7,127.9,85.3,62.6,51.9,51.1,43.1,30.9,29.1,29.1,22.7,22.2,21.6,14.1,13.8.HPLC(CHIRAL-AD-H,228nm,hexane:i-PrOH=90:10,1.0mL/min,tR1(minor)=22.126min,tR1(major)=27.062min,tR2(major)=35.431min,tR2(minor)=46.065min).dr=4.4:1.91%ee.ES-HRMS:Calcd for C22H33N2O6S[M+H],453.2059,Found 453.2051.
6.化合物3af的制备
取1a(1.0mmol,36.8mg,1.0eq.),催化剂(0.2mmol,26mg,0.2eq.),甲苯(2.0mL),2f(2.0mmol,47.9mg,2.0eq.),氮气保护,室温下搅拌反应24小时。反应结束后,加入少量饱和氯化铵,用乙酸乙酯萃取3次,往酯层中加入无水硫酸钠干燥0.5小时,抽滤,旋干,过硅胶柱色谱,以乙酸乙酯:石油醚=1:4作为冲洗剂,分离纯化,旋干,加入2.0mL二氯甲烷,并在低于0℃搅拌的情况下加入对甲基苯磺酰肼(1.5mmol,1.5eq.),加入足量无水硫酸镁,搅拌,室温下反应24小时,抽滤,旋干,过硅胶柱色谱,以乙酸乙酯:石油醚=1:2作为冲洗剂,分离提纯,旋干,得产物3af。
产率:82%。1H NMR(400MHz,CDCl3)δ9.72(d,J=1.2Hz,1H),9.51(d,J=2.4Hz,1H),7.48–7.17(m,10H),4.40–4.25(m,2H),3.89–3.46(m,7H),3.34(d,J=9.4Hz,1H),1.65(s,3H),1.40(s,3H),1.36(t,J=7.1Hz,3H),1.31(s,3H),1.03–0.95(m,3H).13C NMR(100MHz,CDCl3)δ197.8,197.2,169.8,169.8,167.9,167.3,132.9,131.7,130.1,129.7,129.5,129.4,128.9,85.8,85.6,62.5,62.0,60.1,59.9,52.7,52.0,49.2,49.1,28.8,28.3,24.0,23.2,14.1,13.7.HPLC(CHIRAL-AD-H,210nm,hexane:i-PrOH=80:20,2.0mL/min,tR1(minor)=14.845min,tR1(major)=16.001min,tR2(minor)=21.856min,tR2(major)=22.325min).dr=1:1.2.92.3%/68.8%ee.ES-HRMS:Calcd for C17H20NaO5[M+Na],327.120,Found 327.1133.
7.化合物3ah的制备
取1a(1.0mmol,36.8mg,1.0eq.),催化剂(0.2mmol,26mg,0.2eq.),甲苯(2.0mL),2h(2.0mmol,50.7mg,2.0eq.),氮气保护,室温下搅拌反应24小时。反应结束后,加入少量饱和氯化铵,用乙酸乙酯萃取3次,往酯层中加入无水硫酸钠干燥0.5小时,抽滤,旋干,过硅胶柱色谱,以乙酸乙酯:石油醚=1:4作为冲洗剂,分离纯化,旋干,加入2.0mL二氯甲烷,并在低于0℃搅拌的情况下加入对甲基苯磺酰肼(1.5mmol,1.5eq.),加入足量无水硫酸镁,搅拌,室温下反应24小时,抽滤,旋干,过硅胶柱色谱,以乙酸乙酯:石油醚=1:2作为冲洗剂,分离提纯,旋干,得产物3ah。
产率:80%。1H NMR(600MHz,CDCl3)δ8.15(s,1H),7.77(d,J=8.3Hz,2H),7.35–7.23(m,2H),6.80(d,J=8.1Hz,1H),4.31–4.11(m,2H),3.47(d,J=12.3Hz,1H),2.77(dd,J=12.2,9.3Hz,1H),2.41(s,3H),2.34(dd,J=14.8,6.2Hz,1H),1.53(s,3H),1.31(t,J=7.1Hz,11H),1.25–1.02(m,5H),0.86(dt,J=14.6,7.1Hz,3H).13C NMR(150MHz,CDCl3)δ170.1,168.4,151.9,144.5,135.3,129.8,128.0,85.8,62.4,52.3,51.5,43.1,31.5,31.1,29.0,27.8,26.7,22.9,22.5,21.6,14.0.HPLC(CHIRAL-AD-H,254nm,hexane:i-PrOH=90:10,2.0mL/min,tR1(minor)=10.289min,tR1(major)=11.483min,tR2(minor)=15.872min,tR2(major)=21.764min).dr=2.3:1.87.9%ee.ES-HRMS:Calcd for C24 H 37N2O6S[M+H],481.2372,Found 481.2378.
8.化合物3ag的制备
取1a(1.0mmol,36.8mg,1.0eq.),催化剂(0.2mmol,26mg,0.2eq.),甲苯(2.0mL),2g(2.0mmol,54.8mg,2.0eq.),氮气保护,室温下搅拌反应24小时。反应结束后,加入少量饱和氯化铵,用乙酸乙酯萃取3次,往酯层中加入无水硫酸钠干燥0.5小时,抽滤,旋干,过硅胶柱色谱,以乙酸乙酯:石油醚=1:4作为冲洗剂,分离纯化,旋干,加入2.0mL二氯甲烷,并在低于0℃搅拌的情况下加入对甲基苯磺酰肼(1.5mmol,1.5eq.),加入足量无水硫酸镁,搅拌,室温下反应24小时,抽滤,旋干,过硅胶柱色谱,以乙酸乙酯:石油醚=1:2作为冲洗剂,分离提纯,旋干,得产物3ag。
产率:84%。1H NMR(400MHz,CDCl3)δ8.16–8.00(m,1H),7.64(dd,J=10.5,8.4Hz,2H),7.23(d,J=8.2Hz,2H),7.12–7.07(m,3H),6.94–6.86(m,3H),4.35–4.14(m,2H),3.56(d,J=12.2Hz,1H),3.04–2.87(m,1H),2.88–2.56(m,3H),2.51–2.37(m,3H),1.50(s,3H),1.38–1.24(m,6H).13C NMR(100MHz,CDCl3)δ169.9,169.8,168.3,168.2,151.0,150.5,144.2,144.1,137.3,136.9,135.3,135.2,129.7,129.7,128.8,128.8,128.5,127.8,127.6,126.6,126.6,86.0,85.5,62.8,62.6,52.3,51.5,51.3,50.8,44.2,43.8,37.8,37.6,28.5,27.9,23.2,22.7,21.6,14.0.HPLC(CHIRAL-AD-H,210nm,hexane:i-PrOH=80:20,2.0mL/min,tR1(major)=6.328min,tR1(minor)=7.987min,tR2(major)=16.498min,tR2(minor)=50.885min).dr=1.25:1.80.0%/76.0%ee.ES-HRMS:Calcd for C25H30N2NaO7S[M+Na],509.1722,Found 509.1607.
9.化合物3ai的制备
取1a(1.0mmol,36.8mg,1.0eq.),催化剂(0.2mmol,26mg,0.2eq.),甲苯(2.0mL),2i(2.0mmol,54.8mg,2.0eq.),氮气保护,室温下搅拌反应24小时。反应结束后,加入少量饱和氯化铵,用乙酸乙酯萃取3次,往酯层中加入无水硫酸钠干燥0.5小时,抽滤,旋干,过硅胶柱色谱,以乙酸乙酯:石油醚=1:4作为冲洗剂,分离纯化,旋干,加入2.0mL二氯甲烷,并在低于0℃搅拌的情况下加入对甲基苯磺酰肼(1.5mmol,1.5eq.),加入足量无水硫酸镁,搅拌,室温下反应24小时,抽滤,旋干,过硅胶柱色谱,以乙酸乙酯:石油醚=1:2作为冲洗剂,分离提纯,旋干,得产物3ai。
产率:89%。1H NMR(400MHz,CDCl3)δ8.29(d,J=101.5Hz,1H),7.78(t,J=8.6Hz,2H),7.31(dd,J=8.1,3.6Hz,2H),6.84(t,J=8.6Hz,1H),5.48–5.28(m,1H),4.94–4.79(m,2H),4.31–4.10(m,2H),3.46(dd,J=12.0,9.4Hz,1H),2.88–2.74(m,1H),2.55–2.46(m,1H),2.42(d,J=2.5Hz,3H),2.32–1.93(m,2H),1.30(td,J=7.1,2.1Hz,3H),1.27–1.18(m,3H),1.08(d,J=4.3Hz,3H).13C NMR(100MHz,CDCl3)δ169.9,169.7,168.2,168.1,151.3,151.3,144.5,144.4,135.3,135.2,133.6,133.5,129.8,129.7,128.1,127.9,118.1,85.8,85.4,62.6,62.5,52.2,51.4,50.8,50.5,42.5,42.2,35.7,35.5,28.8,27.8,23.0,22.8,21.6,21.6,14.0,14.0.HPLC(CHIRAL-AD-H,254nm,hexane:i-PrOH=90:10,2.0mL/min,tR1(minor)=18.911min,tR1(major)=21.988min,tR2(major)=42.280min,tR2(minor)=49.230min).dr=1.2:1.86.6%/82.1%ee.ES-HRMS:Calcd for C21H29N2O6S[M+H],437.1746,Found437.1722.
10.化合物3aj的制备
取1s(1.0mmol,0.04239g,1.0eq.),催化剂(0.2mmol,26mg,0.2eq.),甲苯(2.0mL),2a(2.0mmol,28.8mg,2.0eq.),氮气保护,室温下搅拌反应24小时。反应结束后,加入少量饱和氯化铵,用乙酸乙酯萃取3次,往酯层中加入无水硫酸钠干燥0.5h,抽滤,旋干,过硅胶柱色谱,以乙酸乙酯:石油醚=1:4作为冲洗剂,分离纯化,旋干,加入2.0mL二氯甲烷,并在低于0℃搅拌的情况下加入对甲基苯磺酰肼(1.5mmol,1.5eq.),加入足量无水硫酸镁,搅拌,室温下反应24h,抽滤,旋干,过硅胶柱色谱,以乙酸乙酯:石油醚=1:2作为冲洗剂,分离提纯,旋干,得产物3aj。
产率:52%。1H NMR(400MHz,CDCl3)δ8.21–7.85(m,1H),7.84–7.77(m,2H),7.34–7.28(m,2H),6.80(d,J=8.1Hz,1H),4.40–4.07(m,2H),3.52–3.22(m,1H),3.14–2.95(m,1H),2.43(d,J=3.1Hz,3H),2.40–2.27(m,1H),1.68–1.28(m,9H),1.02–0.61(m,9H).13CNMR(100MHz,CDCl3)δ170.47,170.09,168.56,168.35,152.26,151.69,144.52,144.46,135.31,135.11,129.75,129.66,127.98,127.91,89.34,89.28,62.49,62.38,52.20,51.68,46.40,46.31,43.99,43.70,29.70,28.48,28.40,28.19,24.58,24.29,22.70,21.59,14.12,14.05,13.99,11.51,11.27,7.78,7.74,7.55,7.24.HPLC(CHIRAL-AD-H,254nm,hexane:i-PrOH=80:20,1.0mL/min,tR1(minor)=26.804min,tR1(major)=32.155min,tR2(minor)=73.729min,tR2(major)=113.252min).dr=2:1.93.2%/68.8%ee.ES-HRMS:Calcd for C22H32N2NaO7S[M+Na],475.1879,Found 475.1769.
11.化合物3ak的制备
取1w(1.0mmol,0.04483g,1.0eq.),催化剂(0.2mmol,26mg,0.2eq.),甲苯(2.0mL),2a(2.0mmol,28.8mg,2.0eq.),氮气保护,室温下搅拌反应24小时。反应结束后,加入少量饱和氯化铵,用乙酸乙酯萃取3次,往酯层中加入无水硫酸钠干燥0.5小时,抽滤,旋干,得得到中间体过硅胶柱色谱,以乙酸乙酯:石油醚=1:4作为冲洗剂,分离纯化,旋干,加入2.0mL二氯甲烷,并在低于0℃搅拌的情况下加入对甲基苯磺酰肼(1.5mmol,1.5eq.),加入足量无水硫酸镁,搅拌,室温下反应24小时,抽滤,旋干,过硅胶柱色谱,以乙酸乙酯:石油醚=1:2作为冲洗剂,分离提纯,旋干,得产物3ak。
产率:65%。1H NMR(400MHz,CDCl3)δ8.18–7.90(m,1H),7.81(dd,J=16.3,8.2Hz,2H),7.36–7.28(m,2H),6.83(t,J=8.3Hz,1H),4.39–4.06(m,2H),3.43(d,J=12.0Hz,1H),2.67(dd,J=21.7,11.0Hz,1H),2.41(s,3H),2.40–2.22(m,1H),1.80–1.14(m,13H),0.91–0.80(m,2H),0.65(t,J=7.2Hz,3H).13C NMR(100MHz,CDCl3)δ170.2,170.0,168.5,168.4,152.1,151.9,144.5,144.4,135.3,135.2,129.7,128.0,127.9,87.4,87.1,62.5,62.4,51.8,51.6,51.4,50.9,44.0,43.7,37.5,37.0,31.7,31.7,29.7,25.0,24.9,24.5,24.2,22.6,22.6,21.6,21.4,21.3,14.0,14.0,11.4,11.2.HPLC(CHIRAL-AD-H,229nm,hexane:i-PrOH=70:30,1.0mL/min,tR1(minor)=6.784min,tR1(major)=8.562min,tR2(minor)=9.910min,tR2(major)=12.682min).dr=2.6:1.86.7%ee.ES-HRMS:Calcd for C23H33N2O6S[M+H],465.2059,Found 465.2036.
12.化合物3al的制备
取1v(1.0mmol,0.03403g,1.0eq.),催化剂(0.2mmol,26mg,0.2eq.),甲苯(2.0mL),2a(2.0mmol,28.8mg,2.0eq.),氮气保护,室温下搅拌反应24小时。反应结束后,加入少量饱和氯化铵,用乙酸乙酯萃取3次,往酯层中加入无水硫酸钠干燥0.5小时,抽滤,旋干,过硅胶柱色谱,以乙酸乙酯:石油醚=1:4作为冲洗剂,分离纯化,旋干,加入2.0mL二氯甲烷,并在低于0℃搅拌的情况下加入对甲基苯磺酰肼(1.5mmol,1.5eq.),加入足量无水硫酸镁,搅拌,室温下反应24小时,抽滤,旋干,过硅胶柱色谱,以乙酸乙酯:石油醚=1:2作为冲洗剂,分离提纯,旋干,得产物3al。
产率:80%。1H NMR(400MHz,CDCl3)δ8.09(s,1H),7.79(d,J=8.3Hz,2H),7.42–7.15(m,2H),6.81(d,J=8.1Hz,1H),3.70(s,3H),3.44(d,J=12.3Hz,1H),2.79(dd,J=12.2,9.3Hz,1H),2.42(s,3H),2.30(dd,J=12.9,10.2,3.9Hz,1H),1.53(s,3H),1.32–1.20(m,5H),0.66(t,J=7.4Hz,3H).13C NMR(100MHz,CDCl3)δ169.5,168.5,152.0,144.5,135.2,129.7,127.8,85.5,53.3,51.7,50.9,44.7,29.1,24.3,22.7,21.6,11.4.HPLC(CHIRAL-OD-H,254nm,hexane:i-PrOH=90:10,2.0mL/min,tR1(major)=9.691min,tR1(minor)=14.033min,tR2(minor)=18.038min,tR2(major)=24.733min).dr=9.1:1.99.0%ee.ES-HRMS:Calcd for C19H26N2NaO6S[M+Na],433.1409,Found 433.1403.
13.化合物3am的制备
取1t(1.0mmol,0.0375g,1.0eq.),催化剂(0.2mmol,26mg,0.2eq.),甲苯(2.0mL),2a(2.0mmol,28.8mg,2.0eq.),氮气保护,室温下搅拌反应24小时。反应结束后,加入少量饱和氯化铵,用乙酸乙酯萃取3次,往酯层中加入无水硫酸钠干燥0.5小时,抽滤,旋干,过硅胶柱色谱,以乙酸乙酯:石油醚=1:4作为冲洗剂,分离纯化,旋干,加入2.0mL二氯甲烷,并在低于0℃搅拌的情况下加入对甲基苯磺酰肼(1.5mmol,1.5eq.),加入足量无水硫酸镁,搅拌,室温下反应24小时,抽滤,旋干,过硅胶柱色谱,以乙酸乙酯:石油醚=1:2作为冲洗剂,分离提纯,旋干,得产物3am。
产率:52.4%。1H NMR(400MHz,CDCl3)δ7.79(d,J=7.3Hz,1H),7.68(d,J=14.6Hz,1H),7.31(d,J=8.1Hz,1H),6.77(dd,J=12.2,8.2Hz,1H),4.30–4.09(m,1H),3.45–3.36(m,1H),2.91–2.78(m,1H),2.42(s,2H),2.39–2.19(m,1H),1.59(s,2H),1.30(dd,J=18.4,11.3Hz,8H),1.13–0.89(m,3H),0.63(t,J=7.4Hz,2H).13C NMR(100MHz,CDCl3)δ169.71,168.18,168.09,152.13,144.44,144.41,135.15,129.68,129.66,127.87,87.55,87.26,62.57,62.54,52.00,51.81,51.47,48.19,44.57,44.12,33.97,29.71,29.33,28.39,27.22,25.64,24.49,21.59,20.91,14.06,11.44,11.40,7.86,7.64.ES-HRMS:Calcd forC21H31N2O6S[M+H],439.1903,Found 439.1903.
14.化合物3an的制备
取1u(1.0mmol,0.04213g,1.0eq.),催化剂(0.2mmol,26mg,0.2eq.),甲苯(2.0mL),2a(2.0mmol,28.8mg,2.0eq.),氮气保护,室温下搅拌反应24小时。反应结束后,加入少量饱和氯化铵,用乙酸乙酯萃取3次,往酯层中加入无水硫酸钠干燥0.5小时,抽滤,旋干,过硅胶柱色谱,以乙酸乙酯:石油醚=1:4作为冲洗剂,分离纯化,旋干,加入2.0mL二氯甲烷,并在低于0℃搅拌的情况下加入对甲基苯磺酰肼(1.5mmol,1.5eq.),加入足量无水硫酸镁,搅拌,室温下反应24小时,抽滤,旋干,过硅胶柱色谱,以乙酸乙酯:石油醚=1:2作为冲洗剂,分离提纯,旋干,得产物3an。
产率:65%。1H NMR(400MHz,CDCl3)δ8.11–7.92(m,1H),7.86–7.73(m,2H),7.37–7.29(m,2H),6.87–6.70(m,1H),4.38–4.10(m,2H),3.46–3.38(m,1H),2.92–2.75(m,1H),2.43(d,J=4.4Hz,3H),2.36–2.22(m,1H),1.80–1.58(m,2H),1.46–1.20(m,10H),0.99–0.79(m,3H),0.74–0.57(m,3H).13C NMR(100MHz,CDCl3)δ170.1,169.8,169.8,168.4,168.2,168.2,152.2,152.0,151.6,144.5,144.4,144.4,135.3,135.2,129.8,129.7,128.0,127.9,127.8,87.8,87.6,87.2,62.6,62.5,62.4,52.1,52.0,52.0,49.0,48.9,44.5,44.4,44.3,43.4,42.3,40.2,37.9,29.7,26.4,24.6,24.4,24.2,23.5,21.6,21.5,21.2,16.8,16.5,16.4,14.4,14.2,14.1,14.0,14.0,11.4,11.4,11.3.HPLC(CHIRAL-AD-H,254nm,hexane:i-PrOH=95:5,2.0mL/min,tR1(minor)=50.009min,tR1(major)=56.263min.dr=1:4:1.91.4%ee.ES-HRMS:Calcd for C22H33N2O6 S[M+H],453.2059,Found453.2052.
15.化合物3ao的制备
取1a(1.0mmol,36.8mg,1.0eq.),催化剂(0.2mmol,26mg,0.2eq.),甲苯(2.0mL),2o(2.0mmol,47.9mg,2.0eq.),氮气保护,室温下搅拌反应24小时。反应结束后,加入少量饱和氯化铵,用乙酸乙酯萃取3次,往酯层中加入无水硫酸钠干燥0.5小时,抽滤,旋干,过硅胶柱色谱,以乙酸乙酯:石油醚=1:4作为冲洗剂,分离纯化,旋干,加入2.0mL二氯甲烷,并在低于0℃搅拌的情况下加入对甲基苯磺酰肼(1.5mmol,1.5eq.),加入足量无水硫酸镁,搅拌,室温下反应24小时,抽滤,旋干,过硅胶柱色谱,以乙酸乙酯:石油醚=1:2作为冲洗剂,分离提纯,旋干,得产物3ao。
产率:82%。1H NMR(400MHz,CDCl3)δ8.38(s,1H),7.90–7.73(m,2H),7.32(d,J=8.1Hz,2H),6.85(d,J=8.1Hz,1H),4.44–4.00(m,2H),3.71–3.23(m,3H),2.94–2.61(m,1H),2.48–2.24(m,4H),1.85–1.17(m,13H).13C NMR(100MHz,CDCl3)δ169.6,168.1,151.3,144.5,135.1,129.8,127.9,85.5,62.7,51.8,51.3,43.7,42.1,29.2,29.1,27.9,22.7,21.6,14.0.HPLC(CHIRAL-OD-H,210nm,hexane:i-PrOH=95:5,2.0mL/min,tR1(major)=30.074min,tR1(minor)=37.612min,dr=5:1.82.0%ee.ES-HRMS:Calcd forC21H29ClN2NaO6S[M+Na],495.1333,Found 495.1334.
16.化合物3ap的制备
取1a(1.0mmol,36.8mg,1.0eq.),催化剂(0.2mmol,26mg,0.2eq.),甲苯(2.0mL),2p(2.0mmol,57.6mg,2.0eq.),氮气保护,室温下搅拌反应24小时。反应结束后,加入少量饱和氯化铵,用乙酸乙酯萃取3次,往酯层中加入无水硫酸钠干燥0.5小时,抽滤,旋干,过硅胶柱色谱,以乙酸乙酯:石油醚=1:4作为冲洗剂,分离纯化,旋干,加入2.0mL二氯甲烷,并在低于0℃搅拌的情况下加入对甲基苯磺酰肼(1.5mmol,1.5eq.),加入足量无水硫酸镁,搅拌,室温下反应24小时,抽滤,旋干,过硅胶柱色谱,以乙酸乙酯:石油醚=1:2作为冲洗剂,分离提纯,旋干,得产物3ap。
产率:68%。1H NMR(400MHz,CDCl3)δ8.64(m,1H),7.79(t,J=7.9Hz,2H),7.31(dd,J=8.1,3.5Hz,2H),6.88(dd,J=8.0,5.5Hz,1H),4.36–4.06(m,2H),3.65(d,J=1.9Hz,3H),3.45(dd,J=19.6,12.1Hz,1H),2.83–2.67(m,1H),2.42(m,4H),2.15(dt,J=9.6,6.7Hz,2H),2.06–2.01(m,1H),1.43–1.19(m,9H),1.06(s,3H).13C NMR(100MHz,CDCl3)δ173.4,170.0,169.7,168.4,168.1,151.5,151.4,144.5,144.3,135.3,135.2,129.8,129.7,128.0,127.8,85.8,85.6,62.7,62.5,52.2,51.7,51.7,51.3,51.2,42.7,42.6,33.2,32.8,30.3,30.2,29.0,27.7,22.8,22.7,22.0,21.9,21.6,14.0,14.0.HPLC(CHIRAL-AD-H,254nm,hexane:i-PrOH=95:5,2.0mL/min,tR1(major)=8.838min,tR1(minor)=9.227min,dr=3.8:1.92.3%ee.ES-HRMS:Calcd for C23H33N2O8S[M+H],497.1958,Found497.1925.
17.化合物3aq的制备
取1a(1.0mmol,36.8mg,1.0eq.),催化剂(0.2mmol,26mg,0.2eq.),甲苯(2.0mL),2q(2.0mmol,73.6mg,2.0eq.),氮气保护,室温下搅拌反应24小时。反应结束后,加入少量饱和氯化铵,用乙酸乙酯萃取3次,往酯层中加入无水硫酸钠干燥0.5小时,抽滤,旋干,过硅胶柱色谱,以乙酸乙酯:石油醚=1:4作为冲洗剂,分离纯化,旋干,加入2.0mL二氯甲烷,并在低于0℃搅拌的情况下加入对甲基苯磺酰肼(1.5mmol,1.5eq.),加入足量无水硫酸镁,搅拌,室温下反应24小时,抽滤,旋干,过硅胶柱色谱,以乙酸乙酯:石油醚=1:2作为冲洗剂,分离提纯,旋干,得产物3aq。
产率:79%。1H NMR(400MHz,CDCl3)δ7.85–7.75(m,2H),7.34–7.27(m,2H),6.85–6.77(m,1H),4.38–4.07(m,2H),3.62–3.27(m,1H),2.85–2.70(m,1H),2.47–2.29(m,4H),1.61–0.80(m,30H).13C NMR(100MHz,CDCl3)δ169.7,168.2,152.2,144.3,135.2,129.7,127.8,85.5,62.7,51.9,51.2,43.0,31.9,31.2,29.6,29.4,29.3,29.2,29.0,27.0,22.7,21.6,14.1,14.0.HPLC(CHIRAL-OD-H,254nm,hexane:i-PrOH=95:5,2.0mL/min,tR1(major)=10.257min,tR1(minor)=13.346min,tR2(major)=21.540min,tR2(minor)=32.443min).dr=5.4:1.78.0%ee.ES-HRMS:Calcd for C28H45N2O6S[M+H],537.2998,Found537.2977.
18.化合物3at的制备
取1a(10.0mmol,36.8mg,1.0eq.),催化剂(2mmol,26mg,0.2eq.),甲苯(2.0mL),2a(20.0mmol,28.8mg,2.0eq.),氮气保护,室温下搅拌反应24小时。反应结束后,加入少量饱和氯化铵,用乙酸乙酯萃取3次,往酯层中加入无水硫酸钠干燥0.5小时,抽滤,旋干,过硅胶柱色谱,以乙酸乙酯:石油醚=1:4作为冲洗剂,分离纯化,旋干,加入2.0mL二氯甲烷,搅拌的情况下加入甲氧甲酰基亚甲基三苯基膦(1.5mmol,11.03mg,1.1eq.),50℃反应22-24小时,反应结束后加入5mL饱和氯化铵溶液,萃取,用乙酸乙酯洗涤2-3次,分液,然后向酯相中加入足量无水硫酸钠,搅拌干燥0.5小时,抽滤,除去无水硫酸钠,旋干,残留物过硅胶柱色谱,以乙酸乙酯:石油醚=1:1作为冲洗剂,旋干,从而得到化合物3at。
产率:83.0%。1H NMR(400MHz,CDCl3)δ6.64(dd,J=15.7,10.4Hz,1H,minorisomer),6.54(dd,J=15.6,10.4Hz,1H,major isomer),5.86(d,J=15.6Hz,1H,majorisomer),5.85(d,J=15.7Hz,1H,minor isomer),4.35–4.08(m,2H,major isomer+minorisomer),3.77(s,3H,minor isomer),3.73(s,3H,major isomer),3.47(d,J=12.0Hz,1H,minor isomer),3.34(d,J=12.2Hz,1H,major isomer),2.86(dd,J=12.2,10.1,7.6Hz,1H,major isomer+minor isomer),2.27–2.12(m,1H,major isomer+minor isomer),1.38–1.22(m,11H,major isomer+minor isomer),0.86(t,J=7.4Hz,3H,major isomer),0.81(t,J=7.4Hz,3H,minor isomer).13C NMR(100MHz,CDCl3)δ170.1,169.9,168.3,167.7,166.0,165.9,149.2,148.0,123.4,123.3,85.9,85.7,62.4,62.3,53.0,52.9,52.6,51.8,51.8,51.6,45.6,45.2,29.3,28.4,25.6,25.4,22.9,22.8,14.0,13.9,11.7,11.5.
19.化合物3aw的制备
取1a(1.0mmol,36.8mg,1.0eq.),催化剂(0.2mmol,26mg,0.2eq.),甲苯(2.0mL),2a(2.0mmol,28.8mg,2.0eq.),氮气保护,室温下搅拌反应24小时。反应结束后,加入少量饱和氯化铵,用乙酸乙酯萃取3次,往酯层中加入无水硫酸钠干燥0.5小时,抽滤,旋干,残留物过硅胶柱色谱,以乙酸乙酯:石油醚=1:4作为冲洗剂,分离纯化,旋干,加入2.0mL二氯甲烷,并在搅拌的情况下将混合液暴露在空气中搅拌,至完全氧化,反应结束,旋干,得化合物3aw。
1H NMR(400MHz,CDCl3)δ4.35–4.18(m,2H),3.85(d,J=11.6Hz,1H),3.67(s,3H),2.95(dd,J=11.6,7.5Hz,1H),2.46(dd,J=10.2,7.5,4.9Hz,1H),1.71–1.59(m,2H),1.57(s,3H),1.36–1.29(m,6H),0.92(t,J=7.3Hz,3H).13C NMR(100MHz,CDCl3)δ173.9,170.3,167.9,85.5,62.2,51.8,51.4,50.6,46.9,28.7,25.2,22.7,14.0,11.9.
20.化合物3av的制备
取1a(1.0mmol,36.8mg,1.0eq.),催化剂(0.2mmol,26mg,0.2eq.),甲苯(2.0mL),2a(2.0mmol,28.8mg,2.0eq.),氮气保护,室温下搅拌反应24小时。反应结束后,加入少量饱和氯化铵,用乙酸乙酯萃取3次,往酯层中加入无水硫酸钠干燥0.5小时,抽滤,旋干,过硅胶柱色谱,以乙酸乙酯:石油醚=1:4作为冲洗剂,分离纯化,旋干,得到中间体的中间体3a。在中间体中加入2.0mL二氯甲烷,并将混合液暴露在空气中搅拌,至完全氧化,反应结束,旋干,得3aw。在3aw中加入4mL甲醇和4mL乙醇,搅拌,加入0.3mL三甲基硅烷直至溶液变黄。反应结束,加入适量乙酸淬灭反应,并用饱和碳酸氢钠中和,用乙酸乙酯洗涤2-3次,分液,向酯相中加入足量无水硫酸钠,搅拌干燥0.5小时,抽滤,除去无水硫酸钠,旋干,残留物过硅胶柱色谱,以乙酸乙酯:石油醚=1:4作为冲洗剂,旋干,从而得到化合物3av。
产率:95.0%。1H NMR(400MHz,CDCl3)δ4.35–4.18(m,2H),3.85(d,J=11.6Hz,1H),3.67(s,3H),2.95(dd,J=11.6,7.5Hz,1H),2.46(dd,J=10.2,7.5,4.9Hz,1H),1.71–1.59(m,2H),1.57(s,3H),1.36–1.29(m,6H),0.92(t,J=7.3Hz,3H).13C NMR(100MHz,CDCl3)δ173.9,170.3,167.9,85.5,62.2,51.8,51.4,50.6,46.9,28.7,25.2,22.7,14.0,11.9.
21.化合物3au的制备
取1a(1.0mmol,36.8mg,1.0eq.),催化剂(0.2mmol,26mg,0.2eq.),甲苯(2.0mL),2a(2.0mmol,28.8mg,2.0eq.),氮气保护,室温下搅拌反应24小时。反应结束后,加入少量饱和氯化铵,用乙酸乙酯萃取3次,往酯层中加入无水硫酸钠干燥0.5小时,抽滤,旋干,过硅胶柱色谱,以乙酸乙酯:石油醚=1:4作为冲洗剂,分离纯化,旋干,得到中间体。将中间体与甲醇和硼氢化钠混合,搅拌反应2小时,反应结束后,加入足量饱和氯化铵淬灭,乙酸乙酯洗涤2-3次,分液,向酯相中加入足量无水硫酸钠,抽滤,旋干,过硅胶柱层析,乙酸乙酯:石油醚=1:1,旋干,得化合物3au。
产率:73.0%。1H NMR(400MHz,CDCl3)δ4.30(q,J=7.1Hz,2H),3.73–3.66(m,1H),3.61(d,J=12.1Hz,1H),3.47(d,J=11.8Hz,1H),2.84(dd,J=12.1,9.2Hz,1H),1.79(dd,J=6.8,4.5Hz,1H),1.60(s,3H),1.53–1.46(m,2H),1.34(m,6H),0.96(t,J=7.1Hz,3H).13CNMR(100MHz,CDCl3)δ170.3,169.3,86.2,62.5,61.8,52.5,49.5,42.2,29.3,22.8,22.2,14.0,11.0.
22.化合物3av的外细胞毒性实验:
取指数生长期MCF7、HepG-2、U251、A549、MGC-803、HO8910、Hela、Saos2、293T细胞,A549、MGC-803用含10%胎牛血清的RPMI1640培养基,MCF7、HepG-2、U251、A549、MGC-803、HO8910、Hela、293T用含10%胎牛血清的DMEM培养基,Saos2用含10%胎牛血清的McCoy's5A培养基分别培养。调整细胞密度为1×105/mL,接种于96孔培养板,设空白对照和阳性对照、非加药组和加药组,每组至少6孔,每孔接种100μL,置5% CO2培养箱37℃培养24小时。
弃去原培养液,精密称取受试样品,加入DMSO溶解后,用含10%胎牛血清的培养基稀释为100μM,10μM,1μM,0.1μM,0.01μM,分别加入96孔板中,空白对照组加入新鲜细胞培养液,每孔100μL,置5% CO2培养箱继续培养48小时。置显微镜下观察细胞形态,每孔加入10μLCCK8试剂,37℃继续培养0.5-4小时。用酶标仪450nm波长下测定吸光度,计算抑制率:[1-(OD加药组-OD空白)/(OD非加药组-OD空白]×100%。化合物的活性测试结果如下表:
注:“-”表示该化合物对细胞无抑制活性
根据上述活性测试的结果可知,以小白菊内酯和顺铂作为对照组,结果表明所制备的一种手性γ-丁内酯衍生物3av对U251、Saos2细胞有抑制活性,对U251细胞的抑制率为23.61%,对Saos2细胞的抑制率为15.35%,MGC803细胞的抑制率为5.22%,293T细胞的抑制率为5.78%,对Hela细胞的抑制率为2.24%。由此可以看出,本发明的一种手性γ-丁内酯衍生物3av作为抑制肿瘤细胞增殖药物具有一定应用价值。
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1.一种手性γ-丁内酯类化合物衍生物,结构式:。
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