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The reaction of 5(4H)-oxazolones with tetraethyl methanediylbis(phosphonate) afforded new 1,1-bisphosphonate and 1,1-bisphosphonic acid derivatives. Moreover, 5(4H)-oxazolones reacted with Wittig reagents to give the corresponding heterocyclic products. Treatment of 5(4H)-oxazolones with trisdialkylaminophosphanes gave the corresponding N-(1-dialkylcarbamoyl)-2-phenylvinylbenzamides. Mechanisms accounting for the formation of the new products are discussed. The biological activity of the newly synthesized compounds was also examined.

zeitschrift für naturforschung b

Synthesis of New Bisphosphonate and Bisphosphonic Acid Derivatives and Heterocyclic and Dialkylcarbamoyl Oxazolone Derivatives with Anticancer and Antischistosomal Activity