Synthesis and Anthelmintic Activity of 7-Hydroxy- 5-oxo-5<i>H</i>-thieno[3,2-<i>b</i>]pyran-6-carboxanilides and -6-thiocarboxanilides
作者:Andrew Plant、Achim Harder、Norbert Mencke、Heinz-Jürgen Bertram
DOI:10.1002/(sici)1096-9063(199612)48:4<351::aid-ps485>3.0.co;2-t
日期:1996.12
7-Hydroxy-5-oxo-5H-thieno [3,2-b]pyran-6-carboxanilides and -6-thiocarboxanilides represent a novel series of anthelmintic compounds, with broad-spectrum activity against important parasitic nematodes in sheep and dogs. In particular, an improved efficacy against Trichostrongylus colubriformis in sheep over the related 3-carbamoyl-4-hydroxycoumarins has been noted. New synthetic routes to the key intermediate, 7-hydroxythieno[3,2-b]pyran-5-one, have been developed.