Three metabolises, 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 methyl ester of β-phenyllactic acid, and o-hydroxynitropapuline was its meta-hydroxy-para-nitro disubstituted derivative. Papulinone, a new β-lactone structurally related to fl-phenyllactic acid, was identified as 4-(1-hydroxy-2-phenylethyl)-4-carbomethoxyoxyetan-2-one.
Isolation of Beta-phenyllactic Acid Related-compounds From Pseudomonas-syringae / Evidente, Antonio; N. S., Iacobellis; A., Scopa; G., Surico. - In: PHYTOCHEMISTRY. - ISSN 0031-9422. - STAMPA. - 29:(1990), pp. 1491-1497. [10.1016/0031-9422(90)80107-R]
Isolation of Beta-phenyllactic Acid Related-compounds From Pseudomonas-syringae
EVIDENTE, ANTONIO;
1990
Abstract
Three metabolises, 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 methyl ester of β-phenyllactic acid, and o-hydroxynitropapuline was its meta-hydroxy-para-nitro disubstituted derivative. Papulinone, a new β-lactone structurally related to fl-phenyllactic acid, was identified as 4-(1-hydroxy-2-phenylethyl)-4-carbomethoxyoxyetan-2-one.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
