Isolation and characterization of new allosamidins.

Isolation and characterization of new allosamidins. The structure of allosamidin, a novel insect chitinase inhibitor, produced by Streptomyces Sp. Structure of demethylallosamidin as an insect chitinase inhibitor. Preparation of biotinylated allosamidins with strong chitinase inhibitory activities Preparation of allosamidin and demethylallosamidin photoaffinity probes and analysis of allosamidin-binding proteins in asthmatic mice Biosynthetic studies of allosamidin. 2. Isolation of didemethylallosamidin, and conversion experiments of 14C-labeled demethylallosamidin, didemethylallosamidin and their related compounds. Argifin, a New Chitinase Inhibitor, Produced by Gliocladium sp. FTD-0668. II. Isolation, Physico-chemical Properties, and Structure Elucidation. Purification and characterization of a sialidase inhibitor, siastatin, produced by Streptomyces. Alachalasins A–G, new cytochalasins from the fungus Stachybotrys charatum Pseurotin A and 8-<i>O</i>-Demethylpseurotin A from<i>Aspergillus fumigatus</i>and Their Inhibitory Activities on Chitin Synthase