appears as a viscous liquid. The substitution patterns of the oligo(poly(ethylene oxide)) chain(s) also significantly influence the solubility of 4a–f, especially in ethanol and water. Formation of self-organized supramolecular structures of 4d and 4e in water as well as 4d in ethanol is evidenced from UV–vis and dynamic light scattering (DLS) measurements. Further studies in water using various imaging
Synthesis and Characterization of Water-Soluble Phenylene−Vinylene-Based Singlet Oxygen Sensitizers for Two-Photon Excitation
作者:Christian B. Nielsen、Mette Johnsen、Jacob Arnbjerg、Michael Pittelkow、Sean P. McIlroy、Peter R. Ogilby、Mikkel Jørgensen
DOI:10.1021/jo050507y
日期:2005.9.1
synthesis and characterization of water-soluble singletoxygen sensitizers with a phenylene−vinylene motif is presented. The principal motivation for this study was to better understand specific features of a water-soluble molecule that influence the photosensitizedproduction of singletoxygen upon nonlinear, two-photon excitation of that molecule. To achieve water solubility, sensitizers were synthesized
A Fundamental Relationship between Hydrophobic Properties and Biological Activity for the Duocarmycin Class of DNA-Alkylating Antitumor Drugs: Hydrophobic-Binding-Driven Bonding
作者:Amanda L. Wolfe、Katharine K. Duncan、James P. Lajiness、Kaicheng Zhu、Adam S. Duerfeldt、Dale L. Boger
DOI:10.1021/jm400665c
日期:2013.9.12
series of increasingly hydrophilic derivatives of duocarmycinSA that feature the incorporation of ethylene glycol units (n = 1–5) into the methoxy substituents of the trimethoxyindole subunit are described. These derivatives exhibit progressively increasing water solubility along with progressive decreases in cell growth inhibitory activity and DNAalkylation efficiency with the incremental ethylene glycol
Duocarmycin SA 的两个系统系列越来越亲水,其特征是将乙二醇单元(n = 1-5)并入三甲氧基吲哚亚基的甲氧基取代基中。随着乙二醇单元掺入的增加,这些衍生物表现出逐渐增加的水溶性以及细胞生长抑制活性和 DNA 烷基化效率的逐渐降低。观察到 cLogP 与细胞生长抑制的-log IC 50和 -log AE(AE = 无细胞 DNA 烷基化效率)的线性关系,cLogP值跨越 2.5–0.49 的生产范围,-log IC 50值跨越11.2-6.4的范围,代表IC 50值相差 10 5 (0.008 到 370 nM)。结果量化了化合物的疏水特性在表达此类成员的生物活性(驱动本质上可逆的 DNA 烷基化反应)中所起的基本作用,并定义了其影响的惊人程度。
Pyridine-Substituted BODIPY as Fluorescent Probe for Hg2+
作者:Sally Wagner、Kerstin Brödner、Benjamin A. Coombs、Uwe H. F. Bunz
DOI:10.1002/ejoc.201101839
日期:2012.4
Dialkynylated BODIPYs bearing pyridine or dibutylaniline substituents have been synthesized, and their photophyisical properties in the presence of different metal ions have been studied. 4-Pyridyl substitution gives a highly selective fluorescence probe for HgII ions.