| abstract |
(57) [Summary]nNovel A83543 components, including fermentation products A83543K, A83543O, A83543P, A83543U, A83543V, A83543W and A83543Y, and their N-demethyl derivatives and salts are useful for controlling insects and mites. The novel A83543 component pseudoaglycone is useful in the preparation of the A83543 component. Provided is a method for producing a novel A83543 component by culturing Saccharomyces spinosa NRRL 18395, NRRL 18537, NRRL 18538 or NRRL 18539, or NRRL 18743, or NRRL 18719 or NRRL 18823 in a suitable medium. Also provided is an insecticidal and acaricidal composition comprising the novel A83543 component. |