|
KMID : 0525619980030010083
|
|
1998 Volume.3 No. 1 p.83 ~ p.89
|
|
|
Chemical modification of dye with chito - oligosaccharides
|
|
안종일/Ahn CI
최하영/임완빈/김동화/임헌선/Choi HY/Im WB/Kim DW/Lim HS
|
|
|
Abstract
|
|
|
|
In order to obtain new functional materials, chito-oligosaccharides(COS) of chitopentaose and chitohexaose which show anti-fungal activity were introduced to dyestuffs. COS-cyanuric chloride (CY)-4,4-diaminostilbene-2,2-sulfunic acid(DAS) and COS-CY-1-amino-4-(p-phenylenediamino)anthraq uinon- 2-sulfonic acid(APAS)conjugates, that is, CO-CY-DAS and COS-CY-APAS were prepared by the reactions of DAS and APAS, as dye intermediates, with CY-activated COS modifiers. Also, glucosamine, as a mdel compound, was reacted with CY-COS modifiers to clarify the chemical structures of the COS-CY-DAS and COS-CY-APAS. As the IH-NMR spectrums of conjugates showed downfield shift of the aromatic protons of dye intermediates and anomeric protons of glucosamine. The reaction of COS-CY-DAS and COS-CY-APAS conjugates were completed by the reactions between another chlorine atom of the triazine ring of the COS-CY modifier and the amino groups of DAS and APAS through the reaction of the amino groups of COS and a chlorine atom of CY.
|
|
|
KEYWORD
|
|
|
|
|
|
FullTexts / Linksout information
|
|
|
|
|
|
Listed journal information
|
|
|
|
|