FusicQccins P and Q , and 3 - from Isolate Niigata 2 - A ofEpifusicoccins H and Q , New Polar a Peach Fusicoccum Canker
نویسنده
چکیده
Our search for new polar f"siceccins biosynthetically related to fusicoccin A from the culture filtrate of isolate Niigata 2-A of a peach Fusicoccum canker fungus resutted in the iso]atiofi of new fusicoccins named fusicocci"s P and Q, and 3-epifusicoccins H and Q, together with 3'-deacetylf"sicoccin A and 16-Odemethyl-3-epifusicoccin J. The structures of fusicoccins P and Q, and of 3-epifuslcoccin Q were determined to be these of deisopenteny]fusicoccin J, 12a-hydroxyfusicoccin H and 12a-hydroxy-3-epifusicoccin H, respectively, by NMR spectrometry and chemica] deriyation from known fusicoccins. 3-Epifusicoccin H was identified by comparing its 400 MHz NMR spectra with those of fusicoccin H. The lettuce seed germinationstimulating actiyity of these new fusicoccins was exam-
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تاریخ انتشار 2018