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    • 14. 发明专利
    • HERBICIDE
    • JPS61200902A
    • 1986-09-05
    • JP4246785
    • 1985-03-04
    • SUMITOMO CHEMICAL CO
    • MIYAKADO MASAKAZUIZUMI KAZUOYAMAZAKI HIROKO
    • A01N43/90A01N65/00
    • PURPOSE:To provide a novel herbicide containing 9-methoxycamptothecin, etc., extracted from vegetables as active components, exhibiting excellent herbicidal effect to various weeds and free from phototoxicity to important crops such as corn, wheat, rice, soybean, cotton, etc. CONSTITUTION:The objective herbicide contains, as active component, 9- methoxycamptothecin of formula separated from Mappia foetida (a plant of Olacaceae family) and reported to have carcinostatic and antileukemic activities, or an extract containing 9-methoxycamptothecin extracted from a plant. The extraction of the above active component is carried out by conventional process for the extraction of natural component, e.g. by the extraction with an organic solvent such as methanol, acetone, ethyl acetate, etc., following by concentration, etc. The herbicide is effective against broad-leaved weeds such as white-bird's- eye, smooth pigweed, green amaranth, etc., gramineous weeds such as barnyard grass, green foxtail, etc., cyperaceous weeds such as yellow-cyperus, etc.
    • 15. 发明专利
    • HERBICIDE
    • JPS61200901A
    • 1986-09-05
    • JP4246685
    • 1985-03-04
    • SUMITOMO CHEMICAL CO
    • YAMAZAKI HIROKOIZUMI KAZUOMIYAKADO MASAKAZU
    • A01N43/90A01N65/00
    • PURPOSE:To provide a novel herbicide containing excelsin, etc., extracted from vegetables as organic components, exhibiting excellent herbicidal effect to various weeds and free from phytotoxicity to important crops such as corn, wheat, rice, soybean, cotton, etc. CONSTITUTION:The objective herbicide contains, as active component, excelsin of formula I separated from Ailanthus excelsa (a plant of Simaroubaceae family) and reported to have carcinostatic activity, or the compound of formula II [ailanthinone (R is group of formula III) or glaucarubinone (R is group of formula IV)], or an extract containing excelsin, ailanthinone or glaucarubinone extracted from a plant. The extraction of the above active component is carried out by conventional process for the extraction of natural component, e.g. by the extraction with an organic solvent such as methanol, acetone, ethyl acetate, etc., followed by concentration, etc. The herbicide is effective against broad- leaved weeds such as white-bird's-eye, green amaranth, etc., gramineous weeds such as barnyard grass, green foxtail, etc., commelinaceous weeds such as dayflower, etc.