A membrane-spanning macrocyclic bolaamphiphile lipid mimic of archaeal lipids
作者:Gavin M. Mitchell、Amelia Hesketh、Christie Lombardi、Cally Ho、Thomas M. Fyles
DOI:10.1139/cjc-2016-0252
日期:2017.3
in six chemical steps from commercially available starting materials using copper-accelerated azide–alkyne coupling to close the macrocycle in high yield. Related diester amphiphiles and an acyclic tetraester bolaamphiphile were also prepared. The set of lipids bearing nitrophenyl phosphate head groups were incorporated into phospholipid vesicles but failed to undergo phosphate hydrolysis in basic conditions
Solid-phase synthesis of a library of linear oligoester ion-channels
作者:Thomas Murray Fyles、Horace Luong
DOI:10.1039/b816648j
日期:——
A solid-phase synthesis protocol was used to prepare fifteen new linear tetra-, and penta-esters structurally related to an active lead compound. The structures were assembled from three types of hydroxyl protected building blocks: monoalkyl esters of hydroxyglutaric acid, ω-hydroxyacids, and α-hydroxymethylalkanoic acids. The standard methodology gave acceptable quantities of material free of small molecule impurities. Mass spectrometric analysis revealed the presence of deletions due to incomplete coupling, as well as additions and macrolactones due to partial acidic rearrangement on release from the solid-support. The amount of these impurities could be estimated from the 1H NMR spectra, and their implications for subsequent activity analysis are discussed.