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Synthesis, Pharmacological and Insect Antifeedant Activities of some 3-(2-naphthyl)-5-(substituted phenyl)-4,5-dihydroisoxazoles

Thirunarayanan G., Sathiyendiran V.

International Letters of Chemistry, Physics and Astronomy

2015

Vol. 49

1--14

Totally thirty one 3,5-substituted aryl 4,5-dihydro isoxazole derivatives including 3-(2-naphthyl)-5-(substituted phenyl)-4,5-dihydroisoxazole have been synthesized by fly-ash:H2SO4 catalyzed cyclization of hydroxylamine hydrochloride and aryl chalcones under solvent-free conditions. The yields of the isoxazoles are more than 94%. The synthesized isoxazole were characterized by their physical constants and spectral data. The antimicrobial, antioxidant and insect antifeedant activities of the synthesized isoxazoles have been evaluated using a variety of bacterial and fungal species, DPPH radical scavenging and castor-leaf disc bioassay of 4th instar larvae Achoea Janata L methods.

Microbial synthesis of novel 4,5-Dihydroisoxazole derivatives. Ethereal bond cleavage

Zadrożna I., Kaniuk J., Kurkowska J., Makuch I., Kruszewska H.

Bulletin of the Polish Academy of Sciences. Chemistry

2000

Vol. 48, No. 3

203-211

Microbial biotransformation - cleavage of ethereal bond - in 4,5-dihydroisoxa-zoles was carried out by using selected yeast Rhodotorulla rubra no. 4 and Aspergillus niger mold fungus. The cleavage of ethereal bond in these compounds afforded alcohols or phenols with a 4,5-dihydroisoxazolic group.