PURPOSE: To obtain a new anthraquinone derivative which is useful as an antimicrobial, herbicide or plant growth regulator, produced by a specific microorganism in Nigrospora and safely metabolizable and degradable in the natural environment.
CONSTITUTION: This compound is represented by the formula (as for R1 tp R3, if R1=H, R2 and R3 are each hydroxy, alkoxy, or acetoxy, if R2=H, R1 and R3 are hydroxy, methoxy, acetoxy). This compound has following physical and chemical properties: molecular weight: 304, molecular formula: CH16H17O6, [α]D: -10.8° (CHCl3, C=0.01), solubility: readily soluble in chloroform, acetone, methanol, dimethyl sulfoxide, pyridine, water; slightly soluble in hexane, Rf: 0.58 (CHCl3-MeOH=9:1), appearance: yellow oil. This compound is obtained by aerobically culturing a microorganism in Nigrospora (FERM BP-5074) at 25-30°C for 7-50 days and purifying the culture mixture.
TSUJINO YASUKO
FUKUSHIMA TOSHIAKI
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