End-labeled Amino Terminated Monotelechelic Glycopolymers Generated by ROMP and Cu(I)-catalyzed Azide-alkyne Cycloaddition

Overview

Journal Beilstein J Org Chem

Specialty Chemistry

Date 2013 Apr 26

PMID 23616802

Citations 1

Authors

Ronald Okoth

Amit Basu

Affiliations

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Abstract

Functionalizable monotelechelic polymers are useful materials for chemical biology and materials science. We report here the synthesis of a capping agent that can be used to terminate polymers prepared by ring-opening metathesis polymerization of norbornenes bearing an activated ester. The terminating agent is a cis-butene derivative bearing a Teoc (2-trimethylsilylethyl carbamate) protected primary amine. Post-polymerization modification of the polymer was accomplished by amidation with an azido-amine linker followed by Cu(I)-catalyzed azide-alkyne cycloaddition with propargyl sugars. Subsequent Teoc deprotection and conjugation with pyrenyl isothiocyanates afforded well-defined end-labeled glycopolymers.

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