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Effect of Crown Ether Ring Size on Binding and Fluorescence Response to Saxitoxin in Anthracylmethyl Monoaza Crown Ether Chemosensors.

ABSTRACT: Convenient macrocyclization synthetic routes for the preparation of different-sized monoaza anthracylmethyl crown ether chemsensors (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: 2.29×10(5) M(-1). Fluorescence enhancements of 100% were observed at saxitoxin concentrations of 5 ?M, which is close to the detection limit in mouse bioassay.

SUBMITTER: Mao H

PROVIDER: S-EPMC3090159 | biostudies-literature | 2006

REPOSITORIES: biostudies-literature

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Effect of Crown Ether Ring Size on Binding and Fluorescence Response to Saxitoxin in Anthracylmethyl Monoaza Crown Ether Chemosensors.

Mao Hua H Thorne John B JB Pharr Jennifer S JS Gawley Robert E RE

Canadian journal of chemistry 20060101

Convenient macrocyclization synthetic routes for the preparation of different-sized monoaza anthracylmethyl crown ether chemsensors (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: 2.29×10(5) M(-1). Fluorescence enhancements of 100% were observed at saxitoxin concentrat ...[more]

PMID: 21562619

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