The structure of allosamidin, a novel insect chitinase inhibitor, produced by Streptomyces Sp.

Allosamidin(1), a novel insect chitinase inhibitor, was isolated from the mycelium of Streptomyces sp. and characterized as 1, which was a basic pseudotrisaccharide consisting of 2-acetamido-2-deoxy-D-allose(N-acetyl-D-allosamine) and a novel aminocyclitol derivative(3), termed allosamizoline.