A series of 3-halo-5-phenyl- and 3-phenyl-5-haloisoxazoles has demonstrated anthelmintic activity at doses ranging from 16 to 500 mg/kg orally against the rat roundworm, Nippostrongylus braziliensis. In the 5-phenyl series a halogen at the 3 position of the isoxazole ring was required for activity. However, in the 3-phenyl series activity was maintained after replacement of the 5-halogen with certain alkoxyl, thioalkoxyl, or amino groups. The 3-phenyl and 5-phenyl series apparently are not acting biologically at a common receptor site. Synthetic methods and structure-activity relationships are discussed.
CARR J. B.; DURHAM H. G.; HASS D. K., J. MED. CHEM. <JMCM-AR>, 1977, 20, NO 7, 934-939
作者:CARR J. B.、 DURHAM H. G.、 HASS D. K.
DOI:——
日期:——
Isoxazole anthelmintics
作者:John B. Carr、Harry G. Durham、D. Kendall Hass
DOI:10.1021/jm00217a014
日期:1977.7
A series of 3-halo-5-phenyl- and 3-phenyl-5-haloisoxazoles has demonstrated anthelmintic activity at doses ranging from 16 to 500 mg/kg orally against the rat roundworm, Nippostrongylus braziliensis. In the 5-phenyl series a halogen at the 3 position of the isoxazole ring was required for activity. However, in the 3-phenyl series activity was maintained after replacement of the 5-halogen with certain alkoxyl, thioalkoxyl, or amino groups. The 3-phenyl and 5-phenyl series apparently are not acting biologically at a common receptor site. Synthetic methods and structure-activity relationships are discussed.
A new synthesis of 1-chloroalkynes
作者:Sylvain Huppé、Hadi Rezaei、Samir Z. Zard
DOI:10.1039/b106657a
日期:——
4-Unsubstitued isoxazolinones derived from the corresponding
β-ketoesters can be chlorinated and converted into 1-chloroalkynes
upon treatment with sodium nitrite and ferrous sulfate in aqueous acetic
acid.