Phytochemistry p. 1491 - 1497 (1990)
Update date:2022-08-10
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Evidente, Antonio
Iacobellis, Nicola S.
Scopa, Antonio
Surico, Giuseppe
Three metabolites, weakly phytotoxic on apple and bean leaves, have been isolated from Pseudomonas syringae pv papulans culture filtrates and their structures established by spectroscopic analysis.The trivial names of papuline, o-hydroxynitropapuline and papulinone were assigned to the three active substances.Papuline was the methylester of β-phenyllactic acid, and o-hydroxynitropapuline was its meta-hydroxy-para-nitro disubstituted derivative.Papulinone, a new β-lactone structurally related to β-phenyllactic acid, was identified as 4-(1-hydroxy-2-phenylethyl)-4-carbomethoxyoxyetan-2-one.
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