CN113200950A - 一类千金子二萜衍生物及其应用 - Google Patents

一类千金子二萜衍生物及其应用 Download PDF

Info

Publication number
CN113200950A
CN113200950A CN202110569854.1A CN202110569854A CN113200950A CN 113200950 A CN113200950 A CN 113200950A CN 202110569854 A CN202110569854 A CN 202110569854A CN 113200950 A CN113200950 A CN 113200950A
Authority
CN
China
Prior art keywords
compound
benzoyl
compounds
nitrobenzoyl
nmr
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN202110569854.1A
Other languages
English (en)
Other versions
CN113200950B (zh
Inventor
焦威
向玲
邵华武
王飞
张中辉
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Chengdu Institute of Biology of CAS
Original Assignee
Chengdu Institute of Biology of CAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Chengdu Institute of Biology of CAS filed Critical Chengdu Institute of Biology of CAS
Priority to CN202110569854.1A priority Critical patent/CN113200950B/zh
Publication of CN113200950A publication Critical patent/CN113200950A/zh
Application granted granted Critical
Publication of CN113200950B publication Critical patent/CN113200950B/zh
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D307/00Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom
    • C07D307/94Heterocyclic 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
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61PSPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P35/00Antineoplastic agents

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Pharmacology & Pharmacy (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)

Abstract

本发明属于有机化学领域,具体涉及一类具有高MDR逆转活性的千金子二萜衍生物及其应用。本发明从大戟植物千金子中提取得到新的千金子二萜衍生物,并对这些化合物进行结构改造,设计并合成了系列化合物,在MCF‑7/ADR细胞内逆转活性优于维拉帕米。其中,化合物29的逆转倍数高达911.94。

Description

一类千金子二萜衍生物及其应用
技术领域
本发明属于有机化学领域,具体涉及一类千金子二萜衍生物及其应用。
背景技术
多药耐药(MDR)是指对一种药物耐药的同时,伴有对其他结构和功能无关的药物也产生耐药的现象;MDR是恶性肿瘤化疗失败的主要原因之一。导致MDR发生的主要机制之一为P-gp的过表达。P-gp作为一个能量依赖的外排泵,可减少细胞内抗癌药物的积累,从而降低药物的疗效。因此,能够抑制P-gp活性的化合物可能具有逆转MDR的潜力。
在众多化合物中,大戟因子L1-L11被发现具有抗肿瘤、抗病毒、抗炎等活性,被视为P-gp介导的MDR的最有希望的逆转剂。但已公开的大戟因子及其衍生物,逆转效果并不显著。
发明内容
本发明的目的是提供一类具有高MDR逆转活性的千金子二萜衍生物及其应用。
为实现上述发明目的,本发明所采用的技术方案是:一类千金子二萜衍生物,结构通式为:
Figure BDA0003082224900000011
其中,R1为H或p-nitrobenzoyl或benzoyl,
R2为p-nitrobenzoyl或Ac或2-thiophenecarbonyl,
R3为p-nitrobenzoyl或benzoyl或2-thiophenecarbonyl,
R4为H或Br。
优选的,R1=H,R2=R3=p-nitrobenzoyl,R4=H。
优选的,R1=R2=R3=p-nitrobenzoyl,R4=H。
优选的,R1=R3=benzoyl,R2=Ac,R4=H。
优选的,R1=H,R2=R3=2-thiophenecarbonyl,R4=H。
优选的,R1=R3=benzoyl,R2=Ac,R4=Br。
相应的,所述千金子二萜衍生物在药物领域的应用。
优选的,在逆转MDR上的应用。
本发明具有以下有益效果:本发明从千金子中提取到了4种化合物:对大戟因子化合物18、38、39、41。并对这四种化合物进行结构改造,设计并合成了化合物1~17,19~37、40,共37个衍生化合物,经核磁共振氢谱、质谱、x-ray单晶衍射等方法确定其结构,再对其进行药理活性研究,为寻找多药耐药逆转剂提供了有益的参考。
本发明得到了25个在MCF-7/ADR细胞内逆转活性优于维拉帕米的二萜化合物,且化合物17、29的逆转倍数分别为460.32、911.94,分别是VRP的229倍、454倍,远高于目前已知的此类化合物。
附图说明
图1为化合物8、化合物31分别在MCF-7/ADR细胞内的罗丹明积累变化示意图;
图2为MCF-7/ADR在化合物17、29、38不同浓度下处理2h后DOX积累,用Image J软件分析得到的荧光数据柱状图;
图3为化合物8、17、29、31和38P-gp表达的western blot实验结果示意图。
具体实施方式
本发明从大戟植物千金子中提取得到化合物18、38、39、41,并分别对这些化合物进行结构改造,设计并合成了化合物1~17、19~37、40。经核磁共振氢谱、质谱、x-ray单晶衍射等方法确定上述41个化合物的结构,再对其进行药理活性研究,最终筛选得到25个在MCF-7/ADR细胞内逆转活性优于维拉帕米的二萜化合物。其中,化合物17、29、38的逆转倍数分别为460.32、911.94、438.69。
化合物1~41的结构式如下所示:
1、
Figure BDA0003082224900000021
其中,化合物1~25、30、31的各R基分别对应如下:
化合物1:R1=R2=R3=R4=H。
化合物2:R1=R2=H,R3=Ac,R4=H。
化合物3:R1=R2=H,R3=p-chlorophenyl,R4=H。
化合物4:R1=R2=H,R3=m-nitrobenzoyl,R4=H。
化合物5:R1=R2=H,R3=p-nitrobenzoyl,R4=H。
化合物6:R1=R2=H,R3=p-Tolylaceyl,R4=H。
化合物7:R1=R2=H,R3=cinnamoyl,R4=H。
化合物8:R1=R2=H,R3=1-naphthylacetyl,R4=H。
化合物9:R1=benzoyl,R2=R3=H,R4=H。
化合物10:R1=R2=H,R3=2-naphthoyl,R4=H。
化合物11:R1=R3=benzoyl,R2=H,R4=H。
化合物12:R1=R3=m-nitrobenzoyl,R2=H,R4=H。
化合物13:R1=H,R2=R3=furoyl,R4=H。
化合物14:R1=H,R2=R3=m-nitrobenzoyl,R4=H。
化合物15:R1=H,R2=R3=cinnamoyl,R4=H。
化合物16:R1=H,R2=R3=benzoyl,R4=H。
化合物17:R1=H,R2=R3=p-(trifluoromethyl)benzoyl,R4=H。
化合物18:R1=R3=benzoyl,R2=R4=Ac。
化合物19:R1=R2=R3=p-Toluoyl,R4=H。
化合物20:R1=R2=R3=m-nitrobenzoyl,R4=H。
化合物21:R1=R2=R3=benzoyl,R4=H。
化合物22:R1=R2=R3=p-nitrobenzoyl,R4=H。
化合物23:R1=R2=R3=p-(trifluoromethyl)benzoyl,R4=H。
化合物24:R1=R2=R3=Ac,R4=H。
化合物25:R2=R3=benzoyl,R1=Ac,R4=H。
2、
Figure BDA0003082224900000031
其中,化合物26~29、34的各R基分别对应如下:
化合物26:R1=H,R2=R3=p-nitrobenzoyl,R4=H。
化合物27:R1=R2=R3=p-nitrobenzoyl,R4=H。
化合物28:R1=R3=benzoyl,R2=Ac,R4=H。
化合物29:R1=H,R2=R3=2-thiophenecarbonyl,R4=H。
化合物34:R1=R3=benzoyl,R2=Ac,R4=Br。
3、
Figure BDA0003082224900000041
其中,化合物30、31的各R基分别对应如下:
化合物30:R1=R3=benzoyl,R2=R5=Ac,R4=R5=H。
化合物31:R1=R3=benzoyl,R2=Ac,R4=R5=H。
4、
Figure BDA0003082224900000042
其中,化合物32、33的各R基分别对应如下:
化合物32:R1=R3=benzoyl,R2=R4=R5=Ac。
化合物33:R1=R3=benzoyl,R2=Ac,R4=R5=propionyl。
5、
Figure BDA0003082224900000043
化合物35的各R基分别为:R1=R3=benzoyl,R2=R4=Ac。
6、
Figure BDA0003082224900000044
化合物36的各R基分别为:R1=phenylacetyl,R2=R3=Ac。
7、
Figure BDA0003082224900000051
化合物37:R1=H。化合物38:R1=benzoyl。
8、
Figure BDA0003082224900000052
化合物39:R1=cinamoyl,R2=R3=Ac。化合物40:R1=R2=R3=H。
9、
Figure BDA0003082224900000053
化合物41:R1=phenylacetyl,R2=R3=Ac。
下面将结合本发明实施例中的附图,对本发明实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例仅是本发明一部分实施例,而不是全部的实施例。若未特别指明,实施例中所用的技术手段为本领域技术人员所熟知的常规手段。
实施例一:化合物1~41的制备和测定
1、化合物1、37、40的制备。在1%(m/v)NaOH/MeOH溶液体系中,分别以化合物18、38、39作为原料(化合物18对应化合物1,以此类推),常温反应24h。反应后,用乙酸乙酯萃取,浓缩,色谱柱分离(石油醚与乙酸乙酯混合溶液洗脱),得到目标产物。化合物1、37、40的核磁共振数据分别如下所示。
化合物1:HRMS-ESI-TOF:[M+Na]+373;mp 226-228℃;1H NMR(400MHz,Acetone)δ7.29(d,J=11.6Hz,1H,H-12),5.07(s,1H,H-17α),4.96(d,J=8.5Hz,1H,H-7),4.81(s,1H,17β),4.68(s,1H,OH-15),4.44(s,1H,H-5),4.37(s,1H,H-3),4.32(s,2H,OH-5,OH-7),4.06(s,1H,OH-3),3.07(dd,J=13.2,8.8Hz,1H,H-1α),2.21(dd,J=8.4,3.3Hz,1H,H-4),1.96–1.85(m,2H,H-2,H-8α),1.69–1.61(m,4H,H-1β,H-20),1.45(dd,J=11.6,8.4Hz,1H,H-11),1.31–1.25(m,2H,H-8β,H-9),1.16(s,3H,H-19),1.12(s,3H,H-18),1.07(d,J=6.8Hz,3H,H-16).
化合物37:HRMS-ESI-TOF:[M+Na]+357;1H NMR(400MHz,Acetone)δ7.87(d,J=12.4Hz,1H,H-12),4.40(s,1H,OH-15),3.98-3.95(m,1H,H-3),3.83(d,J=4.9Hz,1H,OH-3),3.44(d,J=9.5Hz,1H,H-5),3.15(dd,J=12.3,7.3Hz,1H,H-1α),2.02–1.98(m,1H,H-2),1.97-1.95(m,1H,H-7α),1.80(d,J=1.0Hz,3H,H-20),1.76-1.70(m,1H,H-1β),1.67–1.64(m,1H,H-4),1.63-1.61(m,1H,H-11),1.49–1.41(m,1H,H-7β),1.28(dd,J=9.6,3.3Hz,2H,H-8α,H-8β),1.24-1.22(m,1H,H-9),1.20(s,3H,H-18),1.13(s,3H,H-17),1.09(s,3H,H-19),1.05(d,J=6.5Hz,3H,H-16).
化合物40:HRMS-ESI-TOF:[M+Na]+357;1H NMR(400MHz,Acetone)δ7.45(d,J=12.9Hz,1H,H-12),5.88(d,J=10.9Hz,1H,H-5),4.10(s,1H,OH-15),4.04(d,J=5.2Hz,1H,OH-3),3.94–3.86(m,1H,H-3,H-17α),3.52(dd,J=12.0,6.8Hz,1H,H-17β),3.39(dd,J=6.8,4.2Hz,1H,OH-17),3.31(dd,J=13.5,9.0Hz,1H,H-1α),2.35(dd,J=10.9,3.2Hz,1H,H-4),2.31–2.26(m,1H,H-9),2.22-2.18(m,1H,H-7α),1.91-1.84(m,1H,H-2),1.76(d,J=1.0Hz,3H,H-20),1.62–1.53(m,1H,H-7β),1.52–1.47(m,1H,H-8α),1.44(dd,J=9.3,7.1Hz,1H,H-1β),1.29(s,1H,H-8β),1.17(s,3H,H-19),1.15-1.09(m,1H,H-11),1.07(d,J=6.8Hz,3H,H-16),1.05(s,3H,H-18).
2、化合物2、24的制备方法:在DCM、BF3·Et2O体系中,使用化合物1与乙酸酐反应得到目标产物。制备方法为:在氩气保护下,往冰浴的CH2Cl2(5mL)溶液中依次加入化合物1(76mg,0.22mmol)、乙酸酐(21uL,0.22mmol),BF3·Et2O(3uL,0.026mmol)。随后,将反应混合物加热至室温,搅拌10分钟,反应完毕后用CH2Cl2稀释反应液,加入饱和NaHCO3中和反应液。反应液用乙酸乙酯萃取三次,合并有机层并减压蒸发。最后柱层析法分离得到化合物2(产率58%,石油醚/乙酸乙酯=4:1)和化合物24(产率30%,石油醚/乙酸乙酯=15:1)。化合物2、24的核磁共振数据分别如下所示。
化合物2:HRMS-ESI-TOF:[M+Na]+415;1H NMR(400MHz,Acetone)δ6.33(d,J=10.3Hz,1H,H-12),5.13(s,1H,H-17α),5.05(s,1H,H-17β),4.97(s,1H,H-7),4.68(s,1H,OH-15),4.49(s,2H,H-5,OH-5),4.25(s,2H,H-3,OH-3),2.75(dd,J=13.5,8.8Hz,1H,H-1α),2.36(s,1H,H-4),2.00–1.92(m,1H,H-2),1.92–1.82(m,4H,H-8α,H-20),1.68(dd,J=13.3,11.3Hz,1H,H-1β),1.58–1.42(m,2H,H-8β,H-11),1.30–1.22(m,1H,H-9),1.15(s,3H,H-19),1.13(s,3H,H-18),1.05(d,J=6.7Hz,3H,H-16).7-OAc:2.04(s,3H).
化合物24:HRMS-ESI-TOF:[M+Na]+499;1H NMR(400MHz,Acetone)δ7.32(d,J=11.3Hz,1H,H-12),6.08(d,J=9.0Hz,1H,H-5),5.48(t,J=3.6Hz,1H,H-3),5.29(s,1H,H-17α),5.21(dd,J=8.4,3.0Hz,1H,H-7),5.08(s,1H,H-17β),4.49(s,1H,OH-15),3.01(dd,J=13.5,8.8Hz,1H,H-1α),2.72(dd,J=9.0,3.6Hz,1H,H-4),2.29-2.21(m,1H,H-2),2.12(dd,J=9.3,5.8Hz,1H,H-8α),1.96–1.91(m,1H,H-8β),1.72(d,J=1.0Hz,3H,H-20),1.64(dd,J=13.6,11.4Hz,1H,H-1β),1.55(dd,J=11.5,8.5Hz,1H,H-11),1.38-1.31(m,1H,H-9),1.17(s,3H,H-19),1.16(s,3H,H-18),0.93(d,J=6.8Hz,3H,H-16).3-OAc:2.03(s,3H).5-OAc:1.94(s,3H).7-OAc:1.88(s,3H).
3、化合物3~8、10的制备方法:在EDCI、DMAP、DCM体系中,底物化合物1与相应的酸反应得到目标产物。制备方法为:在0℃的CH2Cl2(5mL)溶液中,依次加入化合物1(70mg,0.2mmol)、4-氯苯乙酸(39mg,0.23mmol)、EDCI(44mg,0.23mmol)和DMAP(4mg,0.23mmol)。将混合物在室温下搅拌6h。反应完毕后加水,乙酸乙酯萃取反应液三次,合并有机层并用无水Na2SO4干燥,减压蒸发,柱层析(石油醚/乙酸乙酯=8:1)纯化得到化合物3,为白色无定形固体(产率46%)。其他条件相同,将4-氯苯乙酸改为间硝基苯甲酸,制备得化合物4,将4-氯苯乙酸改为对硝基苯甲酸,制备得化合物5,将4-氯苯乙酸改为对甲基苯乙酸,制备得化合物6,将4-氯苯乙酸改为肉桂酸,制备得化合物7,将4-氯苯乙酸改为1-萘乙酸,制备得化合物8,将4-氯苯乙酸改为2-萘甲酸,制备得化合物10。
化合物3:HRMS-ESI-TOF:[M+Na]+525;1H NMR(400MHz,Acetone)δ6.40(d,J=10.4Hz,1H,H-12),5.11(s,1H,H-17α),5.05–5.00(m,1H,H-7),4.99(s,1H,H-17β),4.67(s,1H,OH-15),4.52(s,1H,H-5),4.47(d,J=4.8Hz,1H,OH-5),4.25(s,1H,H-3),4.23(s,1H,OH-3),2.77(dd,J=13.6,8.6Hz,1H,H-1α),2.36(t,J=3.5Hz,1H,H-4),2.00-1.93(m,1H,H-2),1.93–1.88(m,1H,H-8α),1.86(s,3H,H-20),1.69(dd,J=13.6,11.1Hz,1H,H-1β),1.63–1.53(m,1H,H-8β),1.47(dd,J=10.5,8.9Hz,1H,H-11),1.23–1.17(m,1H,H-9),1.15(s,3H,H-19),1.13(s,3H,H-18),1.06(d,J=6.8Hz,3H,H-16).7-4-Chlorophenylacetyl:7.41–7.32(m,4H),3.76(s,2H).
化合物4:HRMS-ESI-TOF:[M+Na]+522;1H NMR(400MHz,Acetone)δ6.63(d,J=10.5Hz,1H,H-12),5.36(t,J=5.5Hz,1H,H-7),5.19(s,2H,H-17α,H-17β),4.71(s,1H,OH-15),4.68(d,J=4.8Hz,1H,H-5),4.52(d,J=6.0Hz,1H,H-3),4.35–4.30(m,1H,OH-3),4.24(d,J=3.7Hz,1H,OH-5),2.86–2.81(m,1H,H-1α),2.46(t,J=4.0Hz,1H,H-4),2.23-2.16(m,1H,H-8α),1.96(s,1H,H-2),1.90(s,3H,H-20),1.87–1.77(m,1H,H-8β),1.72(dd,J=13.5,11.1Hz,1H,H-1β),1.56(dd,J=10.7,8.8Hz,1H,H-11),1.40(qd,J=8.7,4.3Hz,1H,H-9),1.20(s,3H,H-19),1.16(s,3H,H-18),1.08(d,J=6.8Hz,3H,H-16).7-m-nitrobenzoyl:8.87–8.82(m,1H),8.51(d,J=8.6Hz,2H),7.86(t,J=8.0Hz,1H).
化合物5:HRMS-ESI-TOF:[M+Na]+522;1H NMR(400MHz,Acetone)δ6.62(d,J=10.5Hz,1H,H-12),5.35(t,J=5.5Hz,1H,H-7),5.18(s,2H,H-17α,H-17β),4.70(s,1H,OH-15),4.67(d,J=4.8Hz,1H,H-5),4.49(d,J=6.0Hz,1H,H-3),4.35–4.30(m,1H,OH-3),4.23(d,J=3.7Hz,1H,OH-5),2.86–2.81(m,1H,H-1α),2.46(t,J=4.0Hz,1H,H-4),2.20-2.12(m,1H,H-8α),2.02-1.98(m,1H,H-2),1.90(s,3H,H-20),1.86–1.78(m,1H,H-8β),1.72(dd,J=13.5,11.1Hz,1H,H-1β),1.56(dd,J=10.7,8.8Hz,1H,H-11),1.42-1.36(m,1H,H-9),1.20(s,3H,H-19),1.16(s,3H,H-18),1.08(d,J=6.8Hz,3H,H-16).7-p-nitrobenzoyl:8.42–8.33(m,4H).
化合物6:HRMS-ESI-TOF:[M+Na]+505;1H NMR(400MHz,Acetone)δ6.32(d,J=10.4Hz,1H,H-12),5.10(s,1H,H-17α),5.02–4.98(m,1H,H-7),4.97(s,1H,H-17β),4.67(s,1H,OH-15),4.45(s,1H,OH-15),4.49(s,1H,H-5),4.24(s,2H,H-3,OH-3),2.76(dd,J=13.6,8.7Hz,1H,H-1α),2.36(t,J=3.4Hz,1H,H-4),2.01–1.92(m,1H,H-2),1.90–1.83(m,4H,H-8α,H-20),1.68(dd,J=13.6,11.0Hz,1H,H-1β),1.58–1.49(m,1H,H-8β),1.46(dd,J=10.5,8.9Hz,1H,H-11),1.23-1.18(m,1H,H-9),1.15(s,1H,H-19),1.12(s,1H,H-18),1.06(d,J=6.8Hz,1H,H-16).7-p-Tolyacetyl:7.20(t,J=7.4Hz,2H),7.16–7.09(t,J=7.4Hz,2H),3.68(s,2H),2.30(s,3H).
化合物7:HRMS-ESI-TOF:[M+Na]+503;1H NMR(400MHz,Acetone)δ6.27(d,J=10.4Hz,1H,H-12),5.19(s,1H,H-17α),5.12(br s,1H,H-7),5.10(s,1H,H-17β),4.70(s,1H,OH-15),4.60(d,J=5.0Hz,1H,OH-5),4.53(s,1H,H-5),4.31-4.29(m,1H,OH-3),4.26(d,J=3.6Hz,1H,H-3),2.82–2.73(m,1H,H-1α),2.46(t,J=3.1Hz,1H,H-4),2.01-1.97(m,1H,H-2),1.95(s,1H,H-8α),1.94(s,3H,H-20),1.71(dd,J=13.7,10.9Hz,1H,H-1β),1.60(dd,J=12.8,2.5Hz,1H,H-8β),1.56–1.48(m,1H,H-11),1.35–1.27(m,1H,H-9),1.18(s,3H,H-19),1.14(s,3H,H-18),1.08(d,J=6.8Hz,3H,H-16).7-O-cinnamoyl:7.75(d,J=16.2Hz,1H),7.73–7.68(m,2H),7.46–7.42(m,3H),6.65(d,J=16.0Hz,1H).
化合物8:HRMS-ESI-TOF:[M+Na]+541;1H NMR(400MHz,Acetone)δ6.26(d,J=10.4Hz,1H,C-12),5.10(s,1H,H-17α),4.99(d,J=3.4Hz,1H,H-7),4.97(s,1H,H-17β),4.64(s,1H,OH-15),4.22(br s,3H,H-3,H-5,OH-5),4.17(d,J=3.5Hz,1H,OH-3),2.73(dd,J=13.6,8.7Hz,1H,H-1α),2.35(s,1H,H-4),1.96(s,1H,H-2),1.84(s,3H,H-20),1.83–1.75(m,1H,H-8α),1.67(dd,J=13.6,11.1Hz,1H,H-1β),1.53–1.43(m,1H,H-8β),1.41–1.34(m,1H,H-11),1.29(s,1H,H-9),1.12(s,3H,H-19),1.06(s,3H,H-18),1.04(d,J=6.6Hz,3H,H-16).7-O-(1-naphthylacetyl):8.08(d,J=8.0Hz,1H),7.94(d,J=8.5Hz,1H),7.87(d,J=7.8Hz,1H),7.52(qd,J=15.1,6.9Hz,4H),4.46(s,2H).
化合物10:HRMS-ESI-TOF:[M+Na]+527;1H NMR(400MHz,Acetone)δ6.38(d,J=10.3Hz,1H,H-12),5.34-5.31(m,1H,H-7),5.23(s,1H,H-17α),5.20(s,1H,H-17β),4.73(s,1H,OH-15),4.64(s,1H,H-5),4.35(dd,J=7.3,3.7Hz,1H,H-3),4.29(d,J=3.8Hz,1H,OH-3),2.85–2.78(m,1H,H-1α),2.54(s,1H,H-4),2.20-2.14(m,1H,H-2),1.98(s,3H,H-20),1.78–1.67(m,2H,H-8α,H-11),1.57(dd,J=10.4,9.0Hz,1H,H-1β),1.43-1.36(m,1H,H-8β),1.29(s,1H,H-9),1.22(s,3H,H-19),1.16(s,3H,H-18),1.10(d,J=6.8Hz,1H,H-16).7-O-(2-naphthoyl):8.76(s,1H),8.19–8.07(m,2H),8.05–7.99(m,2H),7.74–7.51(m,2H).
4、所述的化合物9、11~17、19~23、26~27和29的制备方法:在DMAP、Et3N体系中,底物化合物1与相应的酰氯、酸酐反应得到目标产物。化合物9和化合物21的制备方法:在冰浴下的CH2Cl2(10mL)溶液中依次加入化合物1(170mg,0.49mmol)、DMAP(7mg,0.06mmol)、Et3N(204μL,1.47mmol)和苯甲酰氯(226μL,1.96mmol)。将反应逐渐升温至室温,搅拌24h,反应完毕后柱层析进一步纯化,得到化合物9(石油醚/乙酸乙酯=8:1,产率19%)和化合物21(石油醚/乙酸乙酯=12:1,产率31%),均为白色无定形固体。
参照化合物9的制备方法,其他条件相同的情况下,将苯甲酰氯替换为对甲基苯甲酰氯,反应得化合物19,将苯甲酰氯替换为间硝基苯甲酰氯,反应得化合物20,将苯甲酰氯替换为对硝基苯甲酰氯,反应同时得化合物22、化合物26和化合物27,将苯甲酰氯替换为对三氟甲基苯甲酰氯,反应得化合物23,将苯甲酰氯替换为噻吩甲酰氯,反应得化合物29。
化合物12和化合物14的制备方法为:在冰浴下的CH2Cl2(10mL)溶液中,依次加入化合物1(140mg,0.49mmol)、DMAP(7mg,0.06mmol)、Et3N(204μL,1.47mmol)和间硝基苯甲酰酐(113μL,0.98mmol)。反应液逐步升温至室温,搅拌反应12h,反应完毕后柱层析进一步纯化得到化合物12(石油醚/乙酸乙酯=8:1,产率14%)和化合物14(石油醚/乙酸乙酯=12:1,产率13%)。
参照化合物12的制备方法,其他条件相同的情况下,将间硝基苯甲酰酐替换为苯甲酸酐,反应得化合物11和化合物16,将间硝基苯甲酰酐替换为呋喃甲酰氯,反应得化合物13,将间硝基苯甲酰酐替换为肉桂酰氯,反应得化合物15,将间硝基苯甲酰酐替换为对三氟甲基苯甲酰氯,反应得化合物17。
化合物9:HRMS-ESI-TOF:[M+Na]+477;1H NMR(400MHz,Acetone)δ6.37(d,J=10.4Hz,1H,H-12),5.26(dd,J=6.8,3.1Hz,1H,H-7),5.21(s,1H,H-17α),5.14(s,1H,H-17β),4.71(s,1H,OH-15),4.60(br s,2H,H-5,OH-5),4.33(dd,J=7.4,3.6Hz,1H,H-3),4.27(d,J=3.8Hz,1H,OH-7),2.83–2.77(m,1H,H-1α),2.52–2.47(m,1H,H-4),2.14-2.07(m,1H,H-2),1.97-1.95(m,4H,H-8α,H-20),1.73(dd,J=9.5,7.0Hz,1H,H-1β),1.70–1.63(m,1H,H-8β),1.55(dd,J=10.4,8.9Hz,1H,H-11),1.38-1.32(m,1H,H-9),1.21(s,3H,H-19),1.15(s,3H,H-18),1.09(d,J=6.8Hz,3H,H-16).3-O-benzoyl:8.12(d,J=7.2Hz,2H),7.66(t,J=7.4Hz,1H),7.54(t,J=7.7Hz,1H).
化合物11:HRMS-ESI-TOF:[M+Na]+581;1H NMR(400MHz,Acetone)δ6.44(d,J=10.0Hz,1H,H-12),5.86(t,J=3.6Hz,1H,H-3),5.25(dd,J=6.3,4.1Hz,1H,H-7),5.22(s,1H,H-17α),5.13(s,1H,H-17β),5.08(s,1H,OH-15),4.45(s,1H,OH-5),3.17(d,J=3.2Hz,1H,H-5),2.95(dd,J=14.2,9.0Hz,1H,H-1α),2.49(s,1H,H-4),2.09(dd,J=7.1,3.4Hz,1H,H-2),2.04(s,3H,H-20),1.88(dd,J=14.1,10.9Hz,1H,H-1β),1.69–1.60(m,1H,H-8α),1.56(dd,J=10.3,8.9Hz,1H,H-11),1.40-1.33(m,1H,H-8β),1.29(s,1H,H-9),1.21(s,3H,H-19),1.16(s,3H,H-18),1.04(d,J=6.7Hz,3H,H-16).3-O-benzoyl:8.14(d,J=7.2Hz,2H),7.67–7.56(m,1H),7.52(t,J=7.6Hz,2H).7-O-benzoyl:8.04(d,J=7.3Hz,2H),7.67–7.56(m,1H),7.40(t,J=7.7Hz,2H).
化合物12:HRMS-ESI-TOF:[M+Na]+671;1H NMR(400MHz,Acetone)δ6.79(br s,1H,H-12),5.87(t,J=3.5Hz,1H,H-3),5.36(t,J=5.7Hz,1H,H-7),5.30(s,1H,H-17α),5.20(s,1H,H-17β),5.08(s,1H,OH-15),4.58(t,J=5.0Hz,1H,OH-5),3.28(t,J=4.8Hz,1H,H-5),3.02(dd,J=13.9,8.9Hz,1H,H-1α),2.53-2.46(m,1H,H-4),2.21-2.15(m,1H,H-2),1.97(s,3H,H-20),1.90(dd,J=13.9,11.2Hz,1H,H-1β),1.86–1.77(m,1H,H-8α),1.58(dd,J=10.7,8.7Hz,1H,H-11),1.46–1.38(m,1H,H-8β),1.29(s,H,H-9),1.22(s,3H,H-19),1.17(s,3H,H-18),1.05(d,J=6.8Hz,3H,H-16).3-m-nitrobenzoyl:8.88(t,J=4Hz,1H),8.50(d,J=1.9Hz,1H),8.41(dd,J=8.3,2.2Hz,1H),7.84(t,J=8.0Hz,1H).7-m-nitrobenzoyl:8.74–8.70(t,J=4Hz,1H),8.48–8.46(t,J=4Hz,1H),8.35(d,J=7.7Hz,1H),7.64(t,J=8.0Hz,1H).
化合物13:HRMS-ESI-TOF:[M+Na]+561;1H NMR(400MHz,Acetone)δ7.36(d,J=11.2Hz,1H,H-12),6.37(d,J=9.0Hz,1H,H-5),5.49(dd,J=8.4,2.9Hz,1H,H-7),5.44(s,1H,H-17α),5.20(s,1H,H-17β),4.84(s,1H,OH-15),4.23–4.19(m,1H,H-3),3.95(d,J=5.5Hz,1H,OH-3),3.10(dd,J=13.9,9.8Hz,1H,H-1α),2.65(dd,J=8.9,3.0Hz,1H,H-4),2.39-2.30(m,J=15.2,12.2,8.5Hz,1H,H-8α),2.18–2.06(m,2H,H-2,H-1β),1.78(s,3H,H-20),1.68–1.58(m,2H,H-8β,H-11),1.49–1.40(m,1H,H-9),1.25(s,3H,H-19),1.20(s,3H,H-18),1.07(d,J=6.8Hz,3H,H-16).5-O-furoyl:7.68(s,1H),7.04(d,J=3.4Hz,1H),6.49(dd,J=3.5,1.7Hz,1H).7-O-furoyl:7.51(s,1H),6.90(d,J=3.5Hz,1H),6.40(dd,J=3.5,1.7Hz,1H).
化合物14:HRMS-ESI-TOF:[M+Na]+671;1H NMR(400MHz,Acetone)δ7.51(t,J=8.0Hz,1H,H-12),6.63(d,J=9.8Hz,1H,H-5),5.68–5.58(m,2H,H-7,H-17α),5.39(s,1H,H-17β),4.85(s,1H,OH-15),4.21–4.14(br s,1H,H-3),3.85(d,J=5.8Hz,1H,3-OH),3.13(dd,J=12.7,10.9Hz,1H,H-1α),2.82–2.74(m,1H,H-4),2.55(dd,J=24.7,12.1Hz,1H,H-8α),2.32(d,J=17.0Hz,1H,H-8β),2.19–2.09(m,1H,H-2),1.77(s,3H,H-20),1.68(dd,J=11.3,2.5Hz,1H,H-11),1.62(dd,J=9.8,6.7Hz,1H,H-1β),1.56–1.45(m,1H,H-9),1.30(s,3H,H-19),1.23(s,3H,H-18),1.00(d,J=6.8Hz,3H,H-16).5-m-nitrobenzoyl:8.30(d,J=8.8Hz,2H),8.08(d,J=8.8Hz,1H),7.51(t,J=8.0Hz,1H),7-m-nitrobenzoyl:8.19(d,J=8.2Hz,1H),8.13(d,J=10.4Hz,1H),8.01(d,J=8.8Hz,1H),7.44(t,J=8.0Hz,1H).
化合物15:HRMS-ESI-TOF:[M+Na]+633;mp 216-218℃;1H NMR(400MHz,Acetone)δ6.33(d,J=9.5Hz,1H,H-12),5.43(d,J=9.1Hz,1H,H-7),5.40(s,1H,H-17α),5.14(s,1H,H-17β),4.79(s,1H,OH-15),4.18(s,1H,H-5),4.03(d,J=4.8Hz,1H,H-3),3.12(dd,J=13.8,9.8Hz,1H,H-1α),2.82(s,OH-3),2.60(dd,J=9.5,2.7Hz,1H,H-4),2.34-2.24(m,1H,H-2),2.17–2.09(m,1H,H-8α),1.73(s,3H,H-20),1.66(dd,J=10.6,7.1Hz,1H,H-1β),1.61(dd,J=8.3,5.3Hz,1H,H-8β),1.45-1.39(m,2H,H-9,H-11),1.24(s,3H,H-19),1.21(s,3H,H-18),1.08(d,J=6.8Hz,3H,H-16).5-O-cinnamoyl:7.69(d,J=16.0Hz,1H),7.36(t,J=7.7Hz,4H),7.27(t,J=7.4Hz,1H),6.54(d,J=16.0Hz,1H),7-O-cinnamoyl:7.56(d,J=11.1Hz,4H),7.14(t,J=7.6Hz,2H),6.28(d,J=16.1Hz,1H).
化合物16:HRMS-ESI-TOF:[M+Na]+581;1H NMR(400MHz,Acetone)δ7.28(d,J=11.1Hz,1H,H-12),6.38(d,J=8.1Hz,1H,H-5),5.52(dd,J=7.5,3.3Hz,1H,H-7),5.43(s,1H,H-17α),5.24(s,1H,H-17β),4.89(s,1H,OH-15),4.24-4.21(m,1H,H-3),3.88(d,J=6.0Hz,1H,OH-3),3.09(dd,J=14.0,9.9Hz,1H,H-1α),2.75(dd,J=8.1,2.9Hz,1H,H-4),2.41-2.32(m,1H,H-8α),2.22–2.10(m,2H,H-2,H-8β),1.84(s,3H,H-20),1.70–1.59(m,1H,H-1β,H-9),1.47-1.42(m,1H,H-11),1.28(s,3H,H-19),1.21(s,3H,H-18),1.07(d,J=6.8Hz,3H,H-16).5-O-benzoyl:7.88(d,J=7.3Hz,2H),7.50(t,J=7.4Hz,1H),7.35(t,J=7.7Hz,2H).7-O-benzoyl:7.72(d,J=7.3Hz,2H),7.40(t,J=7.4Hz,1H),7.16(t,J=7.8Hz,2H).
化合物17:HRMS-ESI-TOF:[M+Na]+717;1H NMR(400MHz,Acetone)δ7.50(s,1H,H-12),6.60(d,J=9.7Hz,1H,H-5),5.63–5.59(m,1H,H-7),5.59(s,1H,H-17α),5.34(s,1H,H-17β),4.85(s,1H,OH-15),4.22-4.18(m,1H,H-3),3.89(d,J=5.8Hz,1H,OH-3),3.23–3.10(m,1H,H-1α),2.75(dd,J=9.7,2.9Hz,1H,H-4),2.59–2.47(m,1H,H-8α),2.30–2.22(m,1H,H-8β),2.18-2.10(m,1H,H-2),1.78(s,3H,H-20),1.70–1.59(m,2H,H-1β,H-11),1.54–1.45(m,1H,H-9),1.29(s,3H,H-19),1.22(s,3H,H-18),1.02(d,J=6.8Hz,3H,H-16).5-O-p-(trifluoromethyl)benzoyl:7.92(d,J=8.1Hz,2H),7.78(d,J=8.1Hz,2H).7-O-p-(trifluoromethyl)benzoyl:7.57(d,J=8.2Hz,2H),7.42(d,J=8.2Hz,2H).
化合物19:HRMS-ESI-TOF:[M+Na]+727;mp 222-224℃;1H NMR(400MHz,Acetone)δ6.64(d,J=10.4Hz,1H,H-12),6.14(d,J=6.5Hz,1H,H-7),5.85(t,J=3.6Hz,1H,H-3),5.43(t,J=4.9Hz,1H,H-5),5.37(s,1H,H-17α),5.29(s,1H,H-17β),4.79(s,1H,OH-15),3.09(dd,J=6.2,3.7Hz,1H,H-4),2.99(dd,J=14.0,8.9Hz,1H,H-1α),2.55-2.47(m,1H,H-2),2.09-2.06(m,1H,H-8α),2.04(s,3H,H-20),1.81(dd,J=14.0,11.0Hz,1H,H-1β),1.68-1.62(m,1H,H-8β),1.52–1.44(m,1H,H-11),1.28(s,1H,H-9),1.26(s,3H,H-19),1.18(s,3H,H-18),0.96(d,J=6.7Hz,3H,H-16).3-O-p-Toluoyl:7.87(d,J=8.1Hz,2H),7.21(d,J=8.0Hz,2H),2.39(s,3H).5-O-p-Toluoyl:7.65(d,J=8.1Hz,2H),7.04(d,J=8.0Hz,2H),2.30(s,3H).7-O-p-Toluoyl:7.35(d,J=8.1Hz,2H),6.74(d,J=8.0Hz,2H),2.20(s,3H).
化合物20:HRMS-ESI-TOF:[M+Na]+820;1H NMR(400MHz,Acetone)δ7.37(dt,J=23.8,8.0Hz,1H,H-5).6.71(d,J=9.3Hz,1H,H-12),5.85(t,J=3.3Hz,1H,H-3),5.73(s,1H,H-17α),5.66(dd,J=8.8,2.1Hz,1H,H-7),5.59(s,1H,H-17β),5.34(s,1H,OH-15),3.23(dd,J=9.2,3.5Hz,1H,H-4),3.14(dd,J=13.6,8.7Hz,1H,H-1α),2.59–2.48(m,1H,H-2),2.44-2.38(m,1H,H-8α),2.30–2.21(m,1H,H-8β),1.89(s,3H,H-20),1.88–1.81(m,1H,H-1β),1.70(dd,J=11.5,8.6Hz,1H,H-11),1.59–1.50(m,1H,H-9),1.30(s,3H,H-19),1.23(s,3H,H-18),0.91(d,J=6.8Hz,3H,H-16).3-m-nitrobenzoyl:8.56(s,1H),8.46(d,J=8.2Hz,1H),8.27(d,J=7.8Hz,1H),7.90(s,1H).5-m-nitrobenzoyl:8.19(s,1H),8.08(d,J=8.2Hz,2H),7.94(d,J=7.8Hz,1H).7-m-nitrobenzoyl:7.77(t,J=8.0Hz,1H),7.70(d,J=7.7Hz,1H),7.37(dt,J=23.8,8.0Hz,2H).
化合物21:HRMS-ESI-TOF:[M+Na]+685;mp 192-194℃;1H NMR(400MHz,Acetone)δ6.75(d,J=10.6Hz,1H,H-12),6.23(d,J=6.4Hz,1H,H-5),5.89(t,J=3.6Hz,1H,H-3),5.48(t,J=5.0Hz,1H,H-7),5.42(s,1H,H-17α),5.34(s,1H,H-17β),4.89(s,1H,OH-15),3.13(dd,J=6.3,3.7Hz,1H,H-4),3.03(dd,J=13.9,8.9Hz,1H,H-1α),2.52(m,1H,H-2),2.16-2.09(m,2H,H-8α,H-8β),2.05(s,3H,H-20),1.85(dd,J=13.9,11.1Hz,1H,H-1β),1.67(dd,J=10.8,8.9Hz,1H,H-11),1.51(m,1H,H-9),1.28(s,3H,H-19),1.20(s,3H,H-18),0.98(d,J=6.7Hz,3H,H-16).3-O-benzoyl:8.01(d,J=7.1Hz,2H),7.44(dt,J=15.6,7.7Hz,3H).5-O-benzoyl:7.79(d,J=7.2Hz,2H),7.31–7.21(m,3H).7-O-benzoyl:7.50(d,J=7.1Hz,2H),7.59(t,J=7.4Hz,1H),6.97(t,J=7.8Hz,2H).
化合物22:HRMS-ESI-TOF:[M+Na]+820;1H NMR(400MHz,Acetone)δ7.26(br s,1H,H-12),6.62(d,J=9.0Hz,1H,H-5),5.85(t,J=3.3Hz,1H,H-3),5.70(s,1H,H-17α),5.63(dd,J=8.3,2.6Hz,1H,H-7),5.56(s,1H,H-17β),5.23(s,1H,OH-15),3.21(dd,J=9.1,3.5Hz,1H,H-4),3.11(dd,J=13.6,8.7Hz,1H,H-1α),2.57-2.49(m,1H,H-2),2.42–2.29(m,1H,H-8α),2.27–2.18(m,1H,H-8β),1.91(s,3H,H-20),1.85(dd,J=13.6,11.6Hz,1H,H-1β),1.70(dd,J=11.5,8.6Hz,1H,H-11),1.58–1.49(m,1H,H-9),1.28(s,3H,H-19),1.22(s,3H,H-18),0.92(d,J=6.7Hz,1H,H-16).3-p-nitrobenzoyl:8.27(d,J=8.9Hz,2H),7.84(d,J=8.9Hz,2H).5-p-nitrobenzoyl:8.13(d,J=8.9Hz,2H),7.77(d,J=8.9Hz,2H).7-p-nitrobenzoyl:7.90(d,J=8.8Hz,2H),7.57(d,J=8.8Hz,2H).
化合物23:HRMS-ESI-TOF:[M+Na]+889;1H NMR(400MHz,Acetone)δ7.50(br s,1H,H-12),6.55(d,J=8.8Hz,1H,H-5),5.85(t,J=3.4Hz,1H,H-3),5.65(s,1H,H-17α),5.60(dd,J=8.0,2.9Hz,1H,H-7),5.52(s,1H,H-17β),5.15(s,1H,OH-15),3.19(dd,J=8.9,3.6Hz,1H,H-4),3.09(dd,J=13.7,8.7Hz,1H,H-1α),2.55-2.48(m,1H,H-2),2.39–2.27(m,1H,H-8α),2.21-2.15(m,1H,H-8β),1.93(s,3H,H-20),1.85(dd,J=13.6,11.5Hz,1H,H-1β),1.69(dd,J=11.4,8.6Hz,1H,H-11),1.59–1.49(m,1H,H-9),1.28(s,3H,H-19),1.21(s,3H,H-18),0.93(d,J=6.7Hz,3H,H-16).3-O-p-(trifluoromethyl)benzoyl:7.79(d,J=8.3Hz,2H),7.43(d,J=8.3Hz,2H).5-O-p-(trifluoromethyl)benzoyl:7.74(d,J=8.2Hz,2H),7.32(d,J=8.3Hz,2H).7-O-p-(trifluoromethyl)benzoyl:8.10(d,J=8.1Hz,2H),7.53(d,J=8.2Hz,2H).
化合物26:HRMS-ESI-TOF:[M+Na]+671;1H NMR(600MHz,Acetone)δ6.12(d,J=10.4Hz,1H,H-5),5.72(dd,J=11.3,1.4Hz,1H,H-7),5.68(s,1H,H-17α),5.41(s,1H,H-17β),4.22(d,J=9.8Hz,1H,H-12),3.95(d,J=3.4Hz,1H,H-3),3.93-3.89(m,1H,OH-3),2.97(dd,J=11.1,3.4Hz,1H,H-4),2.64(dd,J=25.2,11.8Hz,1H,H-13),2.38(dd,J=9.8,7.2Hz,1H,H-2),2.24(dd,J=12.7,2.9Hz,1H,H-1α),1.98-1.93(m,1H,H-8α),1.89(dd,J=12.3,6.7Hz,1H,H-8β),1.73(t,J=12.7Hz,1H,H-1β),1.25(s,3H,H-18),1.16(d,J=7.2Hz,3H,H-20),1.14(s,3H,H-19),1.01(d,J=6.6Hz,3H,H-16),0.98-0.93(m,1H,H-9),0.88(d,J=9.2Hz,1H,H-11).5-p-nitrobenzoyl:8.10(d,J=8.9Hz,2H),8.01(d,J=8.8Hz,2H).7-p-nitrobenzoyl:7.93(d,J=8.8Hz,4H).
化合物27:HRMS-ESI-TOF:[M+Na]+820;1H NMR(400MHz,Acetone)δ6.33(d,J=11.1Hz,1H,H-5),5.73(d,J=12.8Hz,2H,H-17α,H-7),5.63(t,J=3.1Hz,1H,H-3),5.53(s,1H,H-17β),4.40(d,J=9.7Hz,1H,H-12),3.47(dd,J=11.0,3.7Hz,1H,H-4),2.74-2.65(m,1H,H-13),2.53-2.45(m,1H,H-2),2.38–2.30(m,1H,H-8α),2.27(dd,J=14.4,3.1Hz,1H,H-8β),2.19(dd,J=13.1,7.0Hz,1H,H-1α),1.81(t,J=13.1Hz,1H,H-1β),1.46(s,3H,H-20),1.37(s,1H,H-9),1.29(s,3H,H-19),1.20(s,3H,H-18),1.13–1.08(m,1H,H-11),0.93(d,J=6.7Hz,3H,H-16).3-p-nitrobenzoyl:8.42(d,J=8.8Hz,2H),8.36(d,J=8.8Hz,2H).5-p-nitrobenzoyl:7.93(t,J=8.5Hz,4H).7-p-nitrobenzoyl:8.12(d,J=8.8Hz,2H),7.81(d,J=8.8Hz,2H).
化合物29:HRMS-ESI-TOF:[M+Na]+593;1H NMR(400MHz,Acetone)δ5.96(d,J=10.9Hz,1H,H-5),5.63(d,J=10.0Hz,1H,H-7),5.57(s,1H,H-17α),5.28(s,1H,H-17β),4.19(d,J=9.8Hz,1H,H-12),4.10(d,J=2.2Hz,1H,OH-3),3.91–3.83(m,1H,H-3),2.87(dd,J=11.0,3.3Hz,1H,H-4),2.53(dd,J=25.0,11.5Hz,1H,H-13),2.39-2.32(m,J=14.3,7.2Hz,1H),2.13(d,J=16.0Hz,1H,H-1α),2.02–1.92(m,1H,H-2),1.88(dd,J=12.2,6.7Hz,1H,H-1β),1.73(t,J=12.7Hz,1H,H-8α),1.29(s,2H,H-8β,H-9),1.22(s,3H,H-19),1.15(d,J=7.2Hz,3H,H-20),1.13(s,3H,H-18),1.03(d,J=6.6Hz,3H,H-16),0.95–0.88(m,1H,H-11).5-O-thiophenecarbonyl:7.71(d,J=5.8Hz,1H),7.60(d,J=3.7Hz,1H),7.04–7.00(m,1H).7-O-thiophenecarbonyl:7.56(d,J=5.8Hz,1H),7.50(d,J=3.7Hz,1H),6.92–6.85(m,1H).
5、所述的化合物25的制备方法:在甲醇溶液中,底物化合物18、三氯化铟、苯甲酰氯摩尔比为1:1:1,反应得到目标产物。
化合物25:HRMS-ESI-TOF:[M+Na]+623;1H NMR(400MHz,CDCl3)δ5.99(d,J=10.1Hz,1H,H-12),5.83(t,J=3.5Hz,1H,H-3),5.47(d,J=4.6Hz,1H,H-5),5.30(s,1H,H-7),5.25(s,1H,H-17α),5.19(s,1H,H-17β),4.24(s,1H,OH-15),2.92–2.86(m,1H,H-4),2.82(dd,J=14.7,9.6Hz,1H,H-1α),2.60–2.47(m,1H,H-2),2.13(s,3H,H-20),2.09–1.98(m,1H,H-8α),1.86(dd,J=14.7,10.3Hz,1H,H-1β),1.76-1.66(m,1H,H-8β),1.46(dd,J=20.3,10.4Hz,1H,H-11),1.33-1.28(m,1H,H-9),1.21(s,3H,H-19),1.14(s,3H,H-18),1.07(d,J=6.7Hz,3H,H-16).3-O-benzoyl:8.14(d,J=8.4Hz,2H),7.60–7.56(m,1H),7.44(t,J=7.6Hz,2H).5-OAc:1.31(s,3H).7-O-benzoyl:8.05(d,J=8.4Hz,2H),7.56–7.52(m,1H),7.44(t,J=7.6Hz,2H).
6、化合物28的制备方法:在甲醇溶液中,底物化合物18、三氯化铟、苯甲酰氯摩尔比为1:1:2,加热反应得到目标产物。
化合物28:HRMS-ESI-TOF:[M+Na]+623;mp 191-193℃;1H NMR(400MHz,Acetone)δ6.09(d,J=10.9Hz,1H,H-5),5.66(d,J=10.1Hz,1H,H-7),5.55(s,1H,H-17α),5.53(t,J=4Hz,1H,H-3),5.23(s,1H,H-17β),4.32(d,J=9.8Hz,1H,H-12),3.14(dd,J=11.0,3.7Hz,1H,H-4),2.81(s,1H,H-13),2.69-2.60(m,1H,H-1α),2.46-2.39(m,1H,H-2),2.29-2.21(m,1H,H-8α),2.15–2.06(m,1H,H-8β),1.71(t,J=13.0Hz,1H,H-1β),1.56(s,3H,H-20),1.29(s,1H,H-11),1.17(t,J=3.5Hz,6H,H-18,H-19),1.02–0.94(m,1H,H-9),0.91(d,J=6.7Hz,3H,H-16).3-O-benzoyl:8.12(d,J=8.4Hz,2H),7.65(t,J=7.4Hz,1H),7.38(t,J=7.8Hz,2H).5-OAc:1.41(s,3H).7-O-benzoyl:7.84(d,J=7.2Hz,2H),7.57–7.48(m,3H).
7、所述的化合物30的制备方法:将原料化合物18(150mg,0.23mmol)溶解于20mL二氧六环溶剂中,加入过量NaBH4(0.5g),室温搅拌反应6h,加入适量冰终止反应,用2N H2SO4调节反应液至中性。乙酸乙酯萃取三次,合并有机层浓缩并用柱层析法纯化,得化合物30(141mg,95%),为白色无定形固体。
化合物30:HRMS-ESI-TOF:[M+Na]+667;1H NMR(400MHz,Acetone)δ5.86(s,1H,H-5),5.79(dd,J=11.2,7.1Hz,2H,H-12,H-14),5.26(s,1H,H-17α),5.23(d,J=7.8Hz,1H,H-7),5.01(s,1H,H-17β),4.89(s,1H,OH-15),3.73(s,1H,H-3),2.50(dd,J=13.6,9.0Hz,1H,H-1α),2.45(d,J=2.6Hz,1H,H-4),2.38(m,1H,H-8α),1.98(s,3H,H-20),1.97–1.87(m,3H,H-1β,H-2,H-8β),1.87–1.79(m,1H,H-9),1.30–1.22(m,1H,H-11),1.20(s,3H,H-19),1.11(s,3H,H-18),1.02(d,J=6.7Hz,3H,H-16).3-O-benzoyl:8.18–8.12(m,2H),7.68(t,J=7.4Hz,1H),7.56(t,J=7.7Hz,2H).5-OAc:1.49(s,3H).7-O-benzoyl:8.18–8.12(m,2H),7.62(t,J=7.4Hz,1H),7.51(t,J=7.6Hz,2H).14-OAc:2.09(s,3H).
8、所述的化合物31的制备方法:在氩气保护下,往冰浴的CH2Cl2(5mL)溶液中依次加入化合物30(142mg,0.22mmol)、乙酸酐(21uL,0.22mmol),BF3·Et2O(3uL,0.026mmol)。随后,将反应混合物加热至室温,搅拌10分钟,反应完毕后用CH2Cl2稀释反应液,加入饱和NaHCO3中和反应液。反应液用乙酸乙酯萃取三次,合并有机层并减压蒸发。最后柱层析法分离得到化合物31(产率24%)。
化合物31:HRMS-ESI-TOF:[M+Na]+625.7132,found 623.2609;1H NMR(400MHz,Acetone)δ5.95(d,J=11.2Hz,1H,H-5),5.67(s,1H,H-12),5.53(dd,J=10.3,2.2Hz,1H,H-7),5.46–5.43(m,1H,H-3),5.42(s,1H,H-17α),5.36(s,1H,H-17β),5.06(s,1H,H-14),3.08(dd,J=11.2,3.9Hz,1H,H-4),2.48(dd,J=22.4,10.1Hz,1H,H-8α),2.21-2.16(m,1H,H-2),2.15–2.07(m,2H,H-1α,OH-15),2.02-1.97(m,2H,H-1β,H-8β),1.74(s,3H,H-20),1.30(s,3H,H-19),1.28(s,1H,OH-14),1.12(s,3H,H-18),0.87(d,J=6.2Hz,3H,H-16),0.82-0.77(m,2H,H-9,H-11).3-O-benzoyl:8.12(d,J=7.1Hz,2H),7.51(t,J=6.8Hz,2H),7.34(t,J=7.8Hz,1H).5-OAc:1.48(s,3H).7-O-benzoyl:7.85(d,J=7.1Hz,2H),7.64(t,J=6.9Hz,1H),751(t,J=6.8Hz,1H),7.34(t,J=7.8Hz,1H).
9、所述的化合物32、33的制备方法:在DCM、TMSOTf体系中,底物化合物18与相应酸酐反应得到目标产物。具体制备方法为:在氮气保护下,化合物18(100mg,0.16mmol)溶解于冰浴的干燥CH2Cl2(10mL)溶液中,依次加入乙酸酐(151uL,1.6mmol),TMSOTf(一滴)。将反应混合物搅拌反应5分钟,反应完毕后用CH2Cl2稀释反应液,用饱和NaHCO3中和反应液。乙酸乙酯萃取三次,合并有机层,Na2SO4干燥,减压蒸发。最后柱层析纯化得到化合物32(18mg,产率18%)。其余条件相同,将乙酸酐替换为丙酸酐,反应得化合物33。
化合物32:HRMS-ESI-TOF:[M+Na]+725;1H NMR(400MHz,Acetone)δ5.85(t,J=7.7Hz,3H,H-3,H-7,H-11),5.72(t,J=9.5Hz,1H,H-12),5.61(d,J=7.2Hz,1H,H-5),5.24(s,1H,H-17α),5.15(s,1H,H-17β),4.00(s,1H,H-4),3.48(s,1H,OH-15),2.49(dd,J=14.3,5.8Hz,1H,H-1α),2.39(dd,J=12.3,2.5Hz,1H,H-1β),2.32-2.27(m,1H,H-2),2.15–2.06(m,2H,H-8α,H-10),1.89(dd,J=15.6,9.5Hz,1H,H-8β),1.82(s,3H,H-20),1.22(s,3H,H-19),1.17(s,3H,H-18),0.98(d,J=6.2Hz,3H,H-16).3-O-benzoyl:8.07(d,J=8.1Hz,2H),7.65(dd,J=15.3,7.6Hz,1H),7.53(td,J=7.7,2.0Hz,2H).5-OAc:1.95(s,3H).7-O-benzoyl:8.07(d,J=8.1Hz,2H),7.65(dd,J=15.3,7.6Hz,1H),7.53(td,J=7.7,2.0Hz,2H).12-OAc:1.28(s,3H).14-OAc:2.16(s,3H).
化合物33:HRMS-ESI-TOF:[M+Na]+753;1H NMR(400MHz,Acetone)δ5.93–5.81(m,3H,H-3,H-7,H-11),5.73(t,J=9.5Hz,1H,H-12),5.62(d,J=7.3Hz,1H,H-5),5.24(s,1H,H-17α),5.15(s,1H,H-17β),4.00(s,1H,H-4),3.47(s,1H,OH-15),2.52-2.46(m,1H,H-1α),2.39(dd,J=12.2,2.4Hz,1H,H-1β),2.35–2.29(m,1H,H-2),2.19–2.09(m,2H,H-8α,H-10),1.89(dd,J=16.4,9.8Hz,1H,H-8β),1.83(s,3H,H-20),1.22(s,3H,H-19),1.17(t,7.6Hz,3H,H-18),0.98(d,J=6.2Hz,3H,H-16).3-O-benzoyl:8.07(d,J=8.1Hz,2H),7.65(dd,J=15.3,7.6Hz,1H),7.53(m,2H).5-OAc:1.95(s,3H).7-O-benzoyl:8.07(d,J=8.1Hz,2H),7.65(dd,J=15.3,7.6Hz,1H),7.53(m,2H).12-O-propionyl:2.48(m,2H),1.17(t,7.6Hz,3H).14-O-propionyl:1.06(t,J=7.6Hz,3H),2.26(dd,J=15.1,7.5Hz,2H).
10、所述的化合物34的制备方法:在DCM溶液中,底物化合物25、溴化铜、乙酸酐摩尔比为1:1:10,常温反应得到目标产物。在氮气保护下,将化合物25(96mg,0.16mmol)溶解于冰浴的干燥CH2Cl2(10mL)溶剂中,依次加入乙酸酐(151uL,1.6mmol),CuBr(36mg,0.16mmol)。室温搅拌反应12h,反应完毕后加水淬灭反应,乙酸乙酯萃取反应液三次,合并有机层,Na2SO4干燥,减压蒸发。最后柱层析纯化得到化合物38(22mg,石油醚/乙酸乙酯=25:1),无色晶体,产率为20%。
化合物34:HRMS-ESI-TOF:[M+Na]+701;mp 213-215℃;1H NMR(400MHz,Acetone)δ6.84(s,1H,H-5),6.31(d,J=10.8Hz,1H,H-12),5.83–5.76(m,1H,H-17α),5.71(d,J=4.2Hz,1H,H-17β),5.03(s,1H,H-7),4.93(s,1H,H-3),3.70(dd,J=11.2,5.0Hz,1H,H-4),2.98–2.88(m,1H,H-1α),2.80–2.71(m,1H,H-8α),2.24–2.15(m,1H,H-2),2.14–2.07(m,1H,H-1β),1.90(s,3H,H-19),1.88(s,3H,H-18),1.85–1.82(m,1H,H-8β),1.67(s,3H,H-20),1.19(s,1H,H-9),0.99-0.89(m,1H,H-11),0.86(d,J=6.2Hz,3H,H-16).3-O-benzoyl:8.12(d,J=7.4Hz,2H),7.54(dd,J=16.4,8.2Hz,2H),7.37(t,J=7.7Hz,1H).5-OAc:1.29(s,3H).7-O-benzoyl:7.96(d,J=7.5Hz,2H),7.66(t,J=7.3Hz,1H),7.54(dd,J=16.4,8.2Hz,1H),7.37(t,J=7.7Hz,1H).
11、所述的化合物35的制备方法:在DCM溶液中,底物化合物18、TMSOTf、乙酸酐摩尔比为10:1:1,反应得到目标产物。
化合物35:HRMS-ESI-TOF:[M+Na]+681;1H NMR(600MHz,Acetone)δ7.43(s,1H,H-12),5.78(t,J=3.7Hz,1H,H-3),5.62(d,J=11.7Hz,1H,H-5),5.41(s,1H,H-17α),5.32(dd,J=11.2,2.6Hz,1H,H-7),5.04(s,1H,H-17β),3.30(s,1H,H-10),3.10(d,J=10.4Hz,1H,H-9),3.05(dd,J=11.7,4.2Hz,1H,H-4),2.49-2.41(m,1H,H-2),2.26-2.16(m,1H,H-1α),1.96(s,1H,H-8α),1.88–1.84(m,2H,H-1β,H-8β),1.74(t,J=3.7Hz,3H,H-20),1.72(s,3H,H-18),1.65(s,3H,H-19),0.94(d,J=6.6Hz,3H,H-16).3-O-benzoyl:8.48–8.40(m,2H),7.68–7.59(m,1H),7.57(dt,J=15.1,4.3Hz,2H).5-OAc:1.90(s,3H).7-O-benzoyl:7.98(dd,J=8.3,1.2Hz,2H),7.68–7.59(m,1H),7.47(t,J=7.7Hz,2H).11-OAc:2.04(s,3H).
12、所述的化合物36的的制备方法:在DCM溶液中,底物化合物41、三氯化铟、苯甲酰氯摩尔比为1:1:2,反应得到目标产物。
化合物36:1H NMR(600MHz,Acetone)δ6.69(d,J=11.3Hz,1H,H-12),6.27(s,1H,H-5),5.59(t,J=4.4Hz,1H,H-3),3.94(d,J=11.2Hz,1H,H-17α),3.90(d,J=11.2Hz,1H,H-17β),3.84(d,J=15.2Hz,1H,6-OH),3.03(dd,J=11.7,5.3Hz,1H,H-1α),2.54(d,J=5.3Hz,1H,H-7α),2.27–2.22(m,1H,H-8α),2.03(m,1H,H-2),1.96–1.86(m,2H,H-4,H-8β),1.84(s,3H,H-20),1.65(dd,J=11.2,8.9Hz,1H,H-1β),1.51–1.46(m,1H,H-11),1.40–1.35(m,1H,H-7β),1.37(s,3H,H-19),1.20(s,3H,H-18),1.10(dd,J=14.3,9.0Hz,1H,H-9),0.70(d,J=6.7Hz,3H,H-16).3-O-phenylacetyl:7.36(d,J=7.3Hz,2H),7.33(t,J=7.5Hz,2H),7.26(t,J=7.2Hz,1H),3.76(d,J=16.1Hz,2H).5-OAc:2.01(s,3H).15-OAc:2.21(s,3H).
13、化合物18、38、39、41是从千金子中直接提取得到。提取方法为:用95%的乙醇/丙酮(体积比为5:1)在室温下对千金子粉末(5kg)进行浸泡,溶剂在真空下浓缩得到200g油状物。对油状物进行硅胶柱洗脱,得到3个粗馏分。在对馏分1进行进一步提纯,采用硅胶色谱法(按体积比,石油醚:乙酸乙酯=15:1)得到化合物18(4.6g),馏分2采用硅胶色谱法分离(按体积比,石油醚:乙酸乙酯=12:1)得到化合物38(200mg),化合物39(20mg)。馏分3采用硅胶色谱法(按体积比,石油醚:乙酸乙酯=10:1)得到化合物41(20.7g)。
化合物18:HRMS-ESI-MS:665[M+Na]+;1H NMR(400MHz,Acetone)δ6.60(dd,J=11.2,1.2Hz,1H,H-12),6.38(d,J=7.9Hz,1H,H-5),5.76(t,J=3.2Hz,1H,H-3),5.56(dd,J=8.8,3.1Hz,1H,H-7),5.49(s,1H,H-17α),5.27(s,1H,H-17β),3.35(dd,J=14.0,8.1Hz,1H,H-1α),3.05(dd,J=7.8,3.4Hz,1H,H-4),2.43–2.30(m,1H,H-2,H-8α),2.23-2.17(m,1H,H-8β),1.83–1.75(m,1H,H-9),1.77(d,J=1.1Hz,3H,H-20),1.62(dd,J=11.2,8.5Hz,1H,H-1β),1.51–1.42(m,1H,H-11),1.26(s,3H,H-18),1.22(s,3H,H-19),0.91(d,J=6.7Hz,3H,H-16).3-O-benzoyl:8.10(dd,J=8.3,1.3Hz,2H),7.66(t,J=7.4Hz,1H),7.55(t,J=7.6Hz,1H).5-OAc:1.30(s,3H).7-O-benzoyl:7.93(dd,J=8.3,1.3Hz,2H),7.60(t,J=7.4Hz,1H),7.46(t,J=7.7Hz,1H).15-OAc:2.24(s,3H).
化合物38:HRMS-ESI-TOF:[M+Na]+461;1H NMR(400MHz,Acetone)δ7.88(d,J=12.0Hz,1H,H-12),5.55(t,J=3.6Hz,1H,H-3),5.20(s,1H,OH-15),3.43(d,J=9.1Hz,1H,H-5),3.24(dd,J=12.5,7.1Hz,1H,H-1α),2.00–1.95(m,1H,H-2),1.94–1.90(m,1H,H-7α),1.85(s,3H,H-20),1.79(d,J=13.0Hz,1H,H-1β),1.76(dd,J=9.2,4.4Hz,1H,H-4),1.65(dd,J=11.5,7.9Hz,1H,H-11),1.63–1.53(m,1H,H-8α),1.35-1.27(m,3H,H-7β,H-8β,H-9),1.20(s,6H,H-17,H-18),1.08(s,3H,H-19),0.96(d,J=6.7Hz,3H,H-16).3-O-benzoyl:8.16(d,J=7.2Hz,2H),7.63(t,J=7.4Hz,1H),7.52(t,J=7.6Hz,2H).
化合物41:1H NMR(400MHz,Acetone)δ6.69(dd,J=11.4,1.1Hz,1H,H-12),6.31(d,J=9.0Hz,1H,H-5),5.38(t,J=3.1Hz,1H,H-3),3.24(dd,J=14.0,8.2Hz,1H,H-17α),2.55(d,J=3.6Hz,1H,H-7α),2.19(dd,J=3.4,2.1Hz,1H,H-17β),2.13–2.09(m,1H,H-2),2.08(d,J=3.6Hz,1H,H-8α),2.05(m,2H,H-8β,H-4),1.85(dd,J=9.0,3.4Hz,1H,H-7β),1.80(d,J=1.1Hz,3H,H-20),1.74(d,J=13.3Hz,1H,H-1α),1.62(dd,J=11.4,8.2Hz,1H,H-11),1.38(dd,J=13.9,12.3Hz,1H,H-1β),1.25(s,3H,H-19),1.22(s,3H,H-18),1.00–0.91(m,1H,H-9),0.64(d,J=6.7Hz,3H,H-16).3-O-phenylacetyl:7.34(s,2H),7.33(s,2H),7.27(m,1H),3.70(d,J=15.1Hz,1H),3.58(d,J=15.1Hz,1H).5-OAc:1.99(s,3H).15-OAc:2.15(s,3H).
实施例二:化合物1~41的生物体外活性试验
1、千金子二萜衍生物的细胞毒性检测。具体操作:按照1×110个/孔限定数量,将MCF-7、MCF-7/ADR细胞接种于96孔板,每孔加入100μL含10%胎牛血清的MEM培养基培养15h,至细胞增长至覆盖孔面积的70%,依次加入最终浓度梯度为1μM、5μM、20μM、50μM、100μM的1~41号化合物,化合物皆用DMSO溶解,给药体积为1μL。设置终浓度梯度为0.01μM、0.1μM、1μM、5μM、10μM的多柔比星作为阳性对照,化合物DMSO溶解,给药体积为1μL。设置DMSO为阴性对照,给药体积为1μL。每组设置3个孔作为平行样。37℃培养48h后,抽去原培养基,用无血清MEM培养基按将CCK-8溶液稀释10倍,每孔加入100μL稀释液,37℃孵育1h,之后在450nm测定吸光度。
数据分析:将各孔细胞吸光度相对于DMSO组吸光度的相对百分比作为抑制率,然后将浓度梯度取10的对数,将其作为横坐标,将抑制率作为纵坐标,求得回归方程后带入50%抑制率计算IC50,同时根据每组内数据测得其平均值和方差,每组数据独立重复三次。41个化合物对MCF-7和MCF-7/ADR细胞的细胞毒(IC50)见表1。
表1各化合物对MCF-7和MCF-7/ADR细胞的细胞毒
Figure BDA0003082224900000231
Figure BDA0003082224900000241
2、千金子二萜衍生物逆转耐药能力检测。具体操作:按照1×110个/孔限定数量,将MCF-7/ADR细胞接种于96孔板,每孔加入100μL含10%胎牛血清的MEM培养基培养15h,至细胞增长至覆盖孔面积的70%,加入最终浓度梯度为10μM的1~41号化合物,以终浓度为10μM的维拉帕米(VRP)作为阳性对照。化合物皆用DMSO溶解,给药体积为1μL,37℃下孵育2h。之后加入终浓度梯度为0.01μM、0.1μM、1μM、5μM、10μM的多柔比星,化合物DMSO溶解,给药体积为1μL。设置DMSO为阴性对照,给药体积为1μL。每组设置3个孔作为平行样。37℃培养48h后,抽去原培养基,用无血清MEM培养基按将CCK-8溶液稀释10倍,每孔加入100μL稀释液,37℃孵育1h,之后在450nm测定吸光度。
数据分析:将各孔细胞吸光度相对于DMSO组吸光度的相对百分比作为抑制率,然后将浓度梯度取10的对数,将其作为横坐标,将抑制率作为纵坐标,求得回归方程后带入50%抑制率计算加入1~41号化合物后对于多柔比星的EC50,同时根据每组内数据测得其平均值和方差,每组数据独立重复三次,将耐药株(MCF-7/ADR)对于多柔比星的IC50平均值与加入1~41号化合物的EC50作比值,求出其逆转倍数。逆转倍数=EC50(DOX)/EC50(sample+DOX)。
41个化合物对于MCF-7/ADR细胞的逆转活性数据见表2。
表2各千金子二萜衍生物在MCF-7/ADR细胞上的逆转效应
Figure BDA0003082224900000242
Figure BDA0003082224900000251
从表2可以看出,有25个化合物逆转活性都优于VRP。其中,化合物17、29、38、39活性最佳,逆转倍数分别是维拉帕米(VRP)的229倍、454倍、218倍和71倍。
实施例三:胞内聚集实验
本实施例提供了化合物8、31进行罗丹明123(Rh123)胞内聚集实验检测。具体操作:将MCF-7/ADR和MCF-7细胞以2×106个/孔的密度接种到24孔板中,在37℃下孵育16h,用逆转耐药筛选出来的化合物8和化合物31(浓度分别为2、10和20μM)预处理1h,采用终浓度为20μM的维拉帕米作为阳性对照。之后将细胞与终浓度为5μM的Rh123在37℃避光孵育1h。用PBS洗涤细胞两次,重悬于PBS缓冲液中,并通过流式细胞仪进行分析。实验结果如图1、表3所示。图1为化合物8、化合物31分别在MCF-7/ADR细胞内的罗丹明积累变化示意图。
表3化合物8、31抑制P-gp介导的罗丹明外排实验结果展示表
Figure BDA0003082224900000252
Figure BDA0003082224900000261
化合物8、31在MCF-7/ADR细胞内均可抑制Rh123的外排,并且化合物8、31抑制P-gp的外排能力有明显的浓度依耐性。化合物31随着浓度的增加抑制能力加强,浓度为80μM时基本完全逆转耐药性。化合物8在浓度为20μM抑制P-gp的外排的能力最佳,增加浓度逆转能力反而下降。
实施例四:对多柔比星(DOX)的积累实验
将MCF-7/ADR细胞以1×107个/孔的密度接种到6孔板盖玻片中,在37℃下孵育16h,用逆转耐药筛选出来的化合物17、29和38(浓度分别为2、10和20μM)预处理2h,再用DOX处理2h,终浓度为20μM的维拉帕米作为阳性对照。之后用4%多聚甲醛固定30min,终浓度为5μg/ml的dapi染液(4',6-二脒基-2-苯基吲哚)在于37℃避光孵育1h。用PBS洗涤细胞两次,取出盖玻片,用分片液封于载玻片上,通过荧光显微镜400倍下观察分析。实验结果图2、表4所示。图2为MCF-7/ADR在化合物17、29、38不同浓度下处理2h后DOX积累,用Image J软件分析得到的荧光数据柱状图。图2从左往右依次为:化合物17、化合物29、化合物38的结果展示图。
表4化合物17、29、38抑制P-gp介导的DOX外排实验结果展示表
Figure BDA0003082224900000262
化合物17、29、38均可以抑制MCF-7/ADR细胞内P-gp介导的DOX的外排且具有浓度依赖性。化合物17、29、38均有助于细胞内DOX的积累;化合物29在浓度为10μM时,抑制DOX外排能力优于维拉帕米,在浓度为10μM时,抑制DOX外排能力是维拉帕米的2.1倍。
实施例五:对p-gp表达的western blot实验检测
将MCF-7/ADR细胞以1×107个/孔的密度接种到6孔板中,在37℃下孵育16h,用逆转耐药筛选出来的化合物8、17、29、31和38(浓度分别为2、10和20μM)预处理1h,采用终浓度为20μM的维拉帕米作为阳性对照。PBS洗涤细胞两次,加入Ripa裂解细胞15min,13000r离心细胞20min,总蛋白浓度用BCA试剂盒进行定量检测。之后在8SDS-PAGE凝胶中将蛋白质分离,然后在100V的恒定电压下在4℃下电转移到硝酸纤维素膜上。将硝酸纤维素膜用5%牛血清白蛋白封闭2h。然后在4℃下与抗P-gp或抗GAPDH抗体(一抗)孵育过夜,GAPDH用作加载对照。用TBST(1x Tris缓冲盐水,0.1%Tween 20)洗涤3次后加入山羊抗兔IgG二抗,在室温下孵育2h。再次用TBST洗涤3次后,用超敏ECL化学发光底物检测结合的抗体复合物。结果如图3所示。
以上所述的实施例仅是对本发明的优选方式进行描述,并非对本发明的范围进行限定,在不脱离本发明设计精神的前提下,本领域普通技术人员对本发明的技术方案做出的各种变形、变型、修改、替换,均应落入本发明权利要求书确定的保护范围内。

Claims (8)

1.一类千金子二萜衍生物,其特征在于:结构通式为:
Figure FDA0003082224890000011
其中,R1为H或p-nitrobenzoyl或benzoyl,
R2为p-nitrobenzoyl或Ac或2-thiophenecarbonyl,
R3为p-nitrobenzoyl或benzoyl或2-thiophenecarbonyl,
R4为H或Br。
2.根据权利要求1所述的千金子二萜衍生物,其特征在于:R1=H,R2=R3=p-nitrobenzoyl,R4=H。
3.根据权利要求1所述的千金子二萜衍生物,其特征在于:R1=R2=R3=p-nitrobenzoyl,R4=H。
4.根据权利要求1所述的千金子二萜衍生物,其特征在于:R1=R3=benzoyl,R2=Ac,R4=H。
5.根据权利要求1所述的千金子二萜衍生物,其特征在于:R1=H,R2=R3=2-thiophenecarbonyl,R4=H。
6.根据权利要求1所述的千金子二萜衍生物,其特征在于:R1=R3=benzoyl,R2=Ac,R4=Br。
7.权利要求1~6任意一项所述千金子二萜衍生物在药物领域的应用。
8.根据权利要求6所述千金子二萜衍生物在药物领域的应用,其特征在于:在逆转MDR上的应用。
CN202110569854.1A 2021-05-25 2021-05-25 一类千金子二萜衍生物及其应用 Active CN113200950B (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110569854.1A CN113200950B (zh) 2021-05-25 2021-05-25 一类千金子二萜衍生物及其应用

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110569854.1A CN113200950B (zh) 2021-05-25 2021-05-25 一类千金子二萜衍生物及其应用

Publications (2)

Publication Number Publication Date
CN113200950A true CN113200950A (zh) 2021-08-03
CN113200950B CN113200950B (zh) 2022-07-15

Family

ID=77023236

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110569854.1A Active CN113200950B (zh) 2021-05-25 2021-05-25 一类千金子二萜衍生物及其应用

Country Status (1)

Country Link
CN (1) CN113200950B (zh)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113773272A (zh) * 2021-10-25 2021-12-10 沈阳药科大学 千金二萜烷no供体衍生物及其制备方法和用途
CN115160336A (zh) * 2022-07-21 2022-10-11 复旦大学 续随子烷型二萜的含氧五元环衍生物及其制备方法和应用
CN115703748A (zh) * 2021-08-13 2023-02-17 沈阳药科大学 千金二萜烷噻唑衍生物及其制备方法和用途

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013024493A1 (en) * 2011-08-05 2013-02-21 Council Of Scientific & Industrial Research (An Indian Registered Body Incorporated Under The Registration Of Societies Act (Act Xxi Of 1860) C-9 oxygen functionalized labdane derivates
CN107827752A (zh) * 2017-11-02 2018-03-23 中国科学院新疆理化技术研究所 对叶大戟果实中的大环二萜类化合物及制备方法和多药耐药逆转用途
CN108992443A (zh) * 2018-07-23 2018-12-14 昆明理工大学 Jolkinol型(Ⅱ-2a)千金烷型二萜在逆转肿瘤多药耐药中的应用
US20190270700A1 (en) * 2016-09-15 2019-09-05 University Of Florida Research Foundation, Inc. Methods and compositions for terpenoid synthesis

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013024493A1 (en) * 2011-08-05 2013-02-21 Council Of Scientific & Industrial Research (An Indian Registered Body Incorporated Under The Registration Of Societies Act (Act Xxi Of 1860) C-9 oxygen functionalized labdane derivates
US20190270700A1 (en) * 2016-09-15 2019-09-05 University Of Florida Research Foundation, Inc. Methods and compositions for terpenoid synthesis
CN107827752A (zh) * 2017-11-02 2018-03-23 中国科学院新疆理化技术研究所 对叶大戟果实中的大环二萜类化合物及制备方法和多药耐药逆转用途
CN108992443A (zh) * 2018-07-23 2018-12-14 昆明理工大学 Jolkinol型(Ⅱ-2a)千金烷型二萜在逆转肿瘤多药耐药中的应用

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
WEI JIAO,等: "Lathyrol Diterpenes as Modulators of P-Glycoprotein Dependent Multidrug Resistance: Structure–Activity Relationship Studies on Euphorbia Factor L3 Derivatives", 《J. MED. CHEM.》 *
焦威,等: "千金子化学成分的研究", 《中草药》 *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115703748A (zh) * 2021-08-13 2023-02-17 沈阳药科大学 千金二萜烷噻唑衍生物及其制备方法和用途
CN115703748B (zh) * 2021-08-13 2024-02-02 沈阳药科大学 千金二萜烷噻唑衍生物及其制备方法和用途
CN113773272A (zh) * 2021-10-25 2021-12-10 沈阳药科大学 千金二萜烷no供体衍生物及其制备方法和用途
CN115160336A (zh) * 2022-07-21 2022-10-11 复旦大学 续随子烷型二萜的含氧五元环衍生物及其制备方法和应用
CN115160336B (zh) * 2022-07-21 2023-10-03 复旦大学 续随子烷型二萜的含氧五元环衍生物及其制备方法和应用

Also Published As

Publication number Publication date
CN113200950B (zh) 2022-07-15

Similar Documents

Publication Publication Date Title
CN113200950B (zh) 一类千金子二萜衍生物及其应用
CN110452249B (zh) 新吉玛烷型倍半萜内酯类化合物及其制备和应用
Liu et al. Cytochalasins and polyketides from the fungus Diaporthe sp. GZU-1021 and their anti-inflammatory activity
CN114031579A (zh) 芫花花蕾中瑞香烷型二萜类化合物的制备和应用
CN113277934B (zh) 一类具有mdr逆转活性的千金子二萜衍生物及其应用
Sugawara et al. Zearalenone derivatives produced by the fungus Drechslera portulacae
Eyong et al. Triterpenoids from the stem bark of Vitellaria paradoxa (Sapotaceae) and derived esters exhibit cytotoxicity against a breast cancer cell line
CN101463058B (zh) 羊毛脂烷型三萜化合物海莲酸、其衍生物及其制备方法和用途
Wei et al. Anti-inflammatory evaluation and structure-activity relationships of diterpenoids isolated from Euphorbia hylonoma
Chan et al. Novel phloroglucinols from the plant Melicope sessilifloro (Rutaceae)
Bitam et al. Chemical characterisation of the terpenoid constituents of the Algerian plant Launaea arborescens
Langat et al. Pseudopulchellol: A unique sesquiterpene-monoterpene derived C-25 terpenoid from the leaves of Croton pseudopulchellus Pax (Euphorbiaceae)
CN110452248B (zh) 一种新颖倍半萜化合物及其制备方法与应用
WO2021244051A1 (zh) 一种11-o-罗汉果醇肟醚衍生物及其制备方法
CN109942658B (zh) 一类杂萜化合物及其制备方法与应用和抗肿瘤的药物
CN112661644A (zh) 一种对叶大戟果实中假白榄烷型二萜化合物及制备方法和用途
CN114874098B (zh) 一种从宿萼木中提取分离的化合物及其制备方法和应用
CN113105522B (zh) 一种泽泻三萜类化合物及其制备方法、结构表征方法和应用
Ortega et al. Salviandulines A and B. Two secoclerodane diterpenoids from Salvia lavanduloides
CN114874170B (zh) 多花蒿内酯a-j及其药物组合物与其制备方法和应用
CN111548327A (zh) 降碳贝壳杉烷型二萜及其制备方法和在制备抗肿瘤药物中的用途
Zhang et al. Purification, characterization, crystal structure and NO production inhibitory activity of three new sesquiterpenoids from Homalomena occulta
Yang et al. 16-Tigloyl linked barrigenol-like triterpenoid from Semen Aesculi and its anti-tumor activity in vivo and in vitro
Liu et al. C21 steroids from the roots of Marsdenia tenacissima
Yan et al. Six new tigliane diterpenoids with anti-inflammatory activity from Euphorbia kansuensis

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant