Bis‐thiourea Metal Complexes with Enhanced Antiphytoviral Activity

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Abstract
The activity of bis‐thiourea, diallyl‐bis‐thiourea and in part of diphenyl‐bis‐thiourea against potato virus X (PVX) can be augmented considerably by complexation of the mentioned compounds with Cu±±, Ni±±, and Co±±. Contrary to this, complexation with Fe±± and Cd±± does not augment or reduce the antiphytoviral activity. Most antiphytoviral active are the diallyl‐bis‐thiourea complexes with Cu±±, Ni±± and Co±±. The antiphytoviral activity of the Cu±± and Cd±± complexes with bisthiourea can be additionally augmented by combined treatment with small amounts of 2,4‐dioxohexahydro‐l,3,5‐triazine (DHT).

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