Glucosamines position 2 modification

Chitosan derivatives. Due to the chemical structure of chitosan, specific reactions can be performed on the amino group in C-2 position of the glucosamine unit, especially by reductive amination reaction. Also two -OH groups are available on C-3 and C-6 positions [1,2]. The more interesting is to test reactions on the C-2 position. Two different types of derivatives may be recognized (i) derivatives obtained by chemical modification and introduction of different substituents, (ii) grafted copolymers on C-2 position. 

---