Optimization of gefitinib analogues with potent anticancer activity
作者:Kai-Hao Yin、Yi-Han Hsieh、Rohidas S. Sulake、Su-Pei Wang、Jui-I. Chao、Chinpiao Chen
DOI:10.1016/j.bmcl.2014.09.056
日期:2014.11
The interactions of gefitinib (Iressa) in EGFR are hydrogen bonding and van der Waals forces through quinazoline and aniline rings. However the morpholino group of gefitinib is poorly ordered due to its weak electron density. A series of novel piperazino analogues of gefitinib where morpholino group substituted with various piperazino groups were designed and synthesized. Most of them indicated significant
Two types of half-esters of succinic acid have been prepared. One
contains a 1,2-dialkylated glyceryl group, while the other has a normal
alkyl group as the hydrophobic group. The mono-molecular films of the
half-esters developed at the airâwater interface were evaluated
byÏâA curves. Multilayer
LangmuirâBlodgett (LâB) films deposited on the substrate are
discussed in terms of pinhole defects. Influences of the surface pressure
on accumulation, the number of layers, and the chain length of the
lipophilic group are analysed. The LâB film made from the
double-chained homologues possessed fewer pinhole defects compared with
that composed of the single-chained one.
Abstract Homologous series of crystallisable C8-C22 even-numbered alkane oligomers with either maleate or itaconate monoesters end-groups were synthesized. Their total phase change enthalpy (ΔHtpce) and entropy (ΔStpce) on melting, determined by DSC, show a linear dependence with the number of carbons of the alkyl chain. A comparison was performed with corresponding succinate derivatives. The influence
maleic and succinic acid viz. sodiumlauryl succinate (C12SE), sodiumlauryl maleate (C12ME), sodiumlauryl succinamide (C12SA), sodiumlauryl maleamide (C12MA), sodium hexadecyl succinate (C16SE) and sodium hexadecyl maleate (C16ME) were synthesized and investigated as surfactants in the pure water and aqueous hydrotrope [sodium p-toluene sulfonate (NaPTs)] solution. The chemical structures of the