对于高度精确和有效的癌症治疗,迫切需要具有多模式治疗的刺激可激活和亚细胞细胞器靶向药物。在此,报道了一种用于溶酶体靶向癌症治疗的 CO/光双重可激活 Ru( II )-低聚-(噻吩乙炔) (Ru-OTE)。Ru-OTE 是通过阳离子共轭低聚物 (OTE-BN) 配体和 Ru( II ) 配位驱动的自组装制备的) 中央。在内部气体信号分子 CO 和外部光的双重触发下,Ru-OTE 发生配体取代并释放 OTE-BN,随后显着荧光恢复,可用于监测药物递送和成像引导的抗癌治疗。释放的 OTE-BN 选择性地积聚在溶酶体中,从物理上破坏了它们的完整性。然后,产生的细胞毒性单线态氧(1 O 2)引起严重的溶酶体损伤,从而通过光动力疗法(PDT)导致癌细胞死亡。同时,作为抗癌金属药物,Ru( II )核的释放也抑制了癌细胞的生长。其显着的抗癌作用是通过物理破坏/PDT/化疗的多模式疗法。重要的是,Ru-OTE
Thiophen als Strukturelement physiologisch aktiver Substanzen, 7. Mitt. Substituierte cis-Octahydro-thieno[2,3-c]chinoline
作者:Dieter Binder、Christian R. Noe、Walter Bilek、Manfred Kubjacek
DOI:10.1002/ardp.19813140308
日期:——
Herstellung der halogensubstituierten Titelverbindungen 1c–1f wird beschrieben. Im Laufe der Synthese des instabilen methoxysubstituierten 1g wird ein Verfahren zur Herstellung von 2b durch selektive nucleophile Substitution entwickelt.
The synthesis of multiply substituted acenes is still a relevant research problem, considering their applications and future potential. Here we present an elegant synthetic protocol to afford tetra-peri-substituted naphthalene and tetracene from their tetrahalo derivatives by a Pd(0)-catalyzed C-C cross-coupling method in a single step. The newly synthesized tetracenes were characterized by NMR, HRMS
考虑到其应用和未来潜力,多取代并苯的合成仍然是一个相关的研究问题。在这里,我们提出了一种优雅的合成方案,通过 Pd(0) 催化的 CC 交叉偶联方法一步即可从四卤代衍生物中获得四邻位取代的萘和并四苯。新合成的并四苯通过核磁共振、高分辨质谱、紫外可见分光光度法和单晶 X 射线衍射 (SCXRD) 进行了表征。此外,这里还报道了硫属苯基取代对双苯手性光学性质影响的首次系统计算研究。
Synthesis and biological evaluation of thiophene and benzo[b]thiophene analogs of combretastatin A-4 and isocombretastatin A-4: A comparison between the linkage positions of the 3,4,5-trimethoxystyrene unit
Combretastatin A-4 and isocombretastatin A-4 derivatives having thiophenes or benzo[b]thiophenes instead of the B ring were prepared and evaluated for their in cellulo tubulin polymerization inhibition (TPI) and antiproliferative activities. The presence of the benzo[b]thiophene ring proved to have a crucial effect as most of the thiophene derivatives, except those having one methoxy group, were inactive to inhibit tubulin polymerization into microtubules. The influence of the attachment position was also studied: benzo[b]thiophenes having iso or cis 3,4,5-trimethoxystyrenes at position 2 were 12-30-fold more active than the 3-regioisomers for the TPI activity. Some of the novel designed compounds exhibited interesting anti-proliferative effects on two different cell lines. (C) 2015 Elsevier Ltd. All rights reserved.
Synthesis and thermopower of poly(3-methoxythiophene-2,5-diyl-co-3,4-ethylenedioxythiophene-2,5-diyl)/tosylate
A novel conducting polymer, Poly(3-methoxythiophene-2,5-diyl-co-3,4-ethylenedioxythiophene-2,5-diyl]/tosylate (P1/tos), was synthesized by oxidative in situ polymerization using Fe(tos)(3) as an oxidant. Compared with poly(3,4-ethylenedioxythiophene) (PEDOT), P1 has a deeper HOMO level and a wider energy gap as observed by ultraviolet-visible spectroscopy and photoelectron yield spectroscopy. P1/tos showed electrical conductivity of 10 S/cm and a carrier mobility of about 0.6 cm(2)/(V s), which was extracted by using ion-gel thin film transistors. The calculated carrier concentration was on the order of 10(20) cm(-3), which is lower than that of PEDOT/tos. The Seebeck coefficient of P1/tos was higher than that of PEDOT/tos. (C) 2015 Elsevier Ltd. All rights reserved.