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Oxazole, pyrazole and piperidine derivatives having an o-hydroxyaryl moiety with anticipated molluscicidal activity

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Abstract

The condensation reactions of hippuric acid and its furyl derivative with salicylaldehydes or that of salicylhippuric acid analogues with furaldehyde led to the corresponding oxazoles. These were subsequently treated with hydrazine hydrate, hydroxylamine or subjected to alkaline hydrolysis to yield new o-hydroxyaryl or salicyl containing derivatives. 5-Substituted salicylanilides were treated with piperidine and formaldehyde in a Mannich type reaction affording the corresponding 3-(N-piperidinomethyl) salicylanilides. It was noticed that the presence of an electron donating group in position 3 in the salicylanilide moiety decreases the molluscicidal activity.

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Authors and Affiliations

  1. Pesticides Laboratory, National Research Centre, Dokki, Gairo, Egypt

    Galal A. M. Nawwar, Randa H. Swellem & Amal M. Ibrahim

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  1. Galal A. M. Nawwar
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  2. Randa H. Swellem
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  3. Amal M. Ibrahim
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Nawwar, G.A.M., Swellem, R.H. & Ibrahim, A.M. Oxazole, pyrazole and piperidine derivatives having an o-hydroxyaryl moiety with anticipated molluscicidal activity. Arch. Pharm. Res. 17, 66–70 (1994). https://doi.org/10.1007/BF02974225

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  • DOI: https://doi.org/10.1007/BF02974225

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