Phenalenone-type phytoalexins from Musa acuminata. Synthesis of 4-phenyl-phenalenones
作者： Javier G. Luis , Winston Q. Fletcher , Fernando Echeverri , Teresa A. Grillo
DOI: 10.1016/S0040-4020(01)85707-0
关键词: Carbon-13 NMR 、 Stereochemistry 、 Heteronuclear molecule 、 Phytoalexin 、 Phenols 、 Musa acuminata 、 Proton NMR 、 Chemical synthesis 、 Fusarium oxysporum 、 Chemistry
摘要: Abstract Two new 4-phenyl-phenalenone-type phytoalexins ( 2 , 3 ) have been isolated from rhizomes of Musa acuminata infected with the fungus Fusarium oxysporum . The structures were elucidated on basis spectroscopic evidence, chemical correlation and synthesis commercial phenalen-1-one. shift for all hydrogen carbon atoms in substances unambiguously established by mono- bidimensional, homo- heteronuclear NMR experiments 1 H NMR, 13 C COSY, HMQC HMBC). In preliminary “in vitro” assays, shown inhibitory activity growth germinative tube f. sp. cubense race 4
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