FR-900109 SUBSTANCE, ITS PREPARATION, ANIMAL GROWTH PROMOTOR COMPRISING IT AS ACTIVE INGREDIENT

摘要

NEW MATERIAL:FR-900109 substance having the following physical and chemical properties. Elemental analysis; C66.76%, H6.45%. Molecular weight; 500 (mass spectrometry method). Molecular formula; C27H22O9. Melting point; 263- 264 deg.C (decomposition). [alpha]D<26>=-80 deg. (C=1, CHCl3). Easily soluble in acetone, CHCl3, DMSO, etc., soluble in methanol, ethyl acetate, etc., insoluble in water, benzene, ether, etc. Positive in KMnO4, iodoine vapor reaction, negative in ninhydrin, Ehrlich reagent, etc. Colorless needle-like crystal. An acidic substance, etc. USE:An antibacerial agent against Gram-positive bacteria, and animal growth promotor. PROCESS:For example, a strain, e.g., Streptomyces prunicolor 9261 strain (FERM- P 3876), belonging to the genus Streptomyces, is cultivated in a nutrient medium preferably at 30 deg.C for 50-100hr.