Isolation and Identification of Gibberellins A4 and A9 from a Fungus Phaeosphaeria sp. |
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| Authors: | Takeshi Sassa Katsuhiro Suzuki Emi Haruki |
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| Affiliation: | 1. Department of Agricultural Chemistry, Yamagata University Tsuruoka, Yamagata 997, Japan;2. Research Center, Mitsubishi Kasei Corporation, Midori-ku, Yokohama 227, Japan |
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| Abstract: | Quinolactacide isolated from Penicillium citrinum F 1539 was synthesized and evaluated for its insecticidal activities. The key steps of the total synthesis were an acyl migration reaction of the enol ester intermediate and dehydrogenation of tetrahydroquinolactacide with manganese dioxide. The synthesized quinolactacide showed 100% and 42% mortality against the green peach aphid (Myzus persicae) and diamondback moth (Plutella xylostella) at 500 ppm, respectively. |
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| Keywords: | quinolactacide insecticidal activity acyl migration reaction dehydrogenation |
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