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Translation of Mutarotation into Induced Circular Dichroism Signals through Helix Inversion of Host Polymers
Author(s) -
Waki Minoru,
Abe Hajime,
Inouye Masahiko
Publication year - 2007
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.200604176
Subject(s) - mutarotation , circular dichroism , diastereomer , anomer , polymer , aqueous solution , chemistry , crystallography , materials science , stereochemistry , organic chemistry
About turn : The preferred helical sense of the complex formed between glucose and the meta ‐ethynylpyridine polymer in aqueous methanol is inverted by mutarotation (see picture). The strong circular dichroism effects induced by pure α‐ and β‐ D ‐glucose weakened with time because the diastereomer excess decreased through mutarotation. The transition curve of the ellipticity closely reflected that of the anomer ratio.