105891-53-0Relevant articles and documents
Effect of crown ether ring size on binding and fluorescence response to saxitoxin in anthracylmethyl monoazacrown ether chemosensors
Mao, Hua,Thorne, John B.,Pharr, Jennifer S.,Gawley, Robert E.
, p. 1273 - 1279 (2007/10/03)
Convenient macrocyclization synthetic routes for the preparation of different-sized monoaza anthracylmethyl crown ether chemosensors (15-crown-5, 18-crown-6, 21-crown-7, 24-crown-8, and 27-crown-9) are described. Evaluation of these crowns as chemosensors for saxitoxin revealed that the larger crowns have moderately higher binding constants, with the 27-crown-9 chemosensor having the largest binding constant (2.29 × 105 (mol/L)-1). Fluorescence enhancements of 100% were observed at saxitoxin concentrations of 5 μmol/L, which is close to the detection limit in mouse bioassay.
Synthesis of oligo(ethylene glycol) toward 44-mer
Ahmed, Saleh A.,Tanaka, Mutsuo
, p. 9884 - 9886 (2007/10/03)
A synthetic method for oligo(ethylene glycol) toward 44-mer (FW = 1956.35) is described. Reiteration of Williamson's ether synthesis and hydrogenation to remove protecting benzyl group affords desired oligo(ethylene glycol) toward 44-mer in moderate yields. The advantages in this method are use of commercially easily available materials as starting materials and procedures avoiding difficulty in purification of the products as much as possible.
A NOVEL, UNEQUIVOCAL SYNTHESIS OF POLYETHYLENE GLYCOLS
Coudert, Gerard,Mpassi, Michel,Guillaumet, Gerald,Selve, Claude
, p. 19 - 26 (2007/10/02)
Unequivocal synthesis of polyethyleneglycols is presented.The key step for this synthesis is the selective monobenzylation of oligoethyleneglycols by the phase transfer catalysis technique.
