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Updated: Jun 24, 2026

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Published on: September 28, 2022
Phytotoxic aromatic constituents of Oxalis pes-caprae
Marina DellaGreca1, Lucio Previtera, Raffaella Purcaro
1UDR Napoli 4 (Consorzio INCA), Dipartimento di Chimica Organica e Biochimica, Università Federico II, Complesso Universitario Monte Sant'Angelo, Via Cinthia 4, I-80126 Napoli. dellagre@unina.it
Abstract:
A cinnamic acid ester, two dihydrocinnamic acid esters, a noroxyneolignan, a dibenzyl ether derivative, along with common aromatic compounds and flavonoids were isolated from the extracts of fresh leaves and twigs of Oxalis pes-caprae. The structures of these aromatic compounds were elucidated on the basis of spectroscopic analyses, especially 2D-NMR techniques. Their effects on the germination and growth of Lactuca sativa L. as standard target species have been studied at concentrations ranging from 10(-4) to 10(-7) M. The activities of some compounds were higher than that of pendimethalin, a commercial pre-emergence herbicide.
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