Chitosan oligosaccharide Schiff base phosphonate as well as preparation method and application thereof

A technology of Schiff base phosphonate and chitosan oligosaccharides, which is applied in the field of development and utilization of biological resource pesticides, to achieve a significant effect of inducing disease resistance, short reaction time, and good anti-tobacco mosaic virus activity

Inactive Publication Date: 2010-10-20
HENAN AGRICULTURAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

On the other hand, Schiff bases and Schiff base metal complexes are also a class of compounds with a wide range of biological activities. There have been many reports on their bactericidal and antiviral activities.

Method used

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  • Chitosan oligosaccharide Schiff base phosphonate as well as preparation method and application thereof
  • Chitosan oligosaccharide Schiff base phosphonate as well as preparation method and application thereof
  • Chitosan oligosaccharide Schiff base phosphonate as well as preparation method and application thereof

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Abstract

The invention relates to chitosan oligosaccharide Schiff base phosphonate, which has the structural formula shown in the specification, and in the formula, n is 2-20. The preparation method comprises the following steps of: carrying out chemical modification on chitosan oligosaccharide with salicylaldehyde and substituted salicylaldehyde by adopting a microwave radiation method to obtain a chitosan oligosaccharide Schiff base (S-COS), and then carrying out addition reaction on the S-COS and diethyl phosphite to obtain the chitosan oligosaccharide Schiff base phosphonate. The chitosan oligosaccharide Schiff base phosphonate has better activity for resisting tobacco mosaic virus.

Description

technical field The invention belongs to the technical field of biological resource pesticide development and utilization, and in particular relates to a chitosan oligosaccharide Schiff base phosphonate and a preparation method and application thereof. Background technique Tobacco Mosaic Virus (TMV) is one of the main diseases of tobacco. There are 16 kinds of tobacco virus diseases reported so far. above. After the tobacco plants are infected with mosaic disease, the quality of the tobacco leaves will deteriorate and the grade will drop, which will have a great impact on the appearance quality and internal components of the tobacco leaves, reducing the availability of the tobacco leaves, thereby seriously endangering the yield and quality of the tobacco leaves, and often causing huge economic losses. , becoming one of the restrictive factors for the production of high-quality tobacco leaves. From 1989 to 1991, the annual incidence of mosaic disease in major tobacco-growin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07H15/18C07H1/02C08B37/08A01N57/24A01P1/00
Inventor 徐翠莲杨国玉王彩霞樊素芳赵士举
Owner HENAN AGRICULTURAL UNIVERSITY
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