Sorangiadenosine (1), a novel nucleoside possessing a bicyclic, eudesmane-type sesquiterpene as an auxiliary component, was isolated from the culture broth of the gliding bacterium Sorangium cellulosum KM1003, collected from Korean soil. The chemical structure of this compound was determined by combined spectroscopic and chemical analyses. The new compound exhibited. moderate antibacterial activity against a wide range of bacterial strains.
Development of a Novel Method for Trimethylsilylation of Saccharides
The trimethylsilyl (TMS) group is widely used in carbohydrate synthesis, although this protecting group is unstable and its post-synthetic purification challenging. The successful trimethylsilylation of carbohydrates mediated by recyclable and efficient acidic catalyst PTA/HMDS and the novel reagent, TMSOAc (TEA/TMSOAc), under alkaline condition is reported. The advantages of these methods are that