The chitosan was prepared from chitin by deacetylating and the degree of deacetylation was 83%.

This is a first report about function study of histone acetyltransferase and deacetylase in wheat.

Seeing that Chrysophanol has the same basic parent structure with Rhein, Rhein was synthesized through acetylation, oxidation and deacetylation reaction taking Chrysophanol as raw material.