Synthesis and biological activity of tonghaosu analogs containing phenoxy-phenyl moiety†
Dedicated to Professor Chengye Yuan on the occasion of his 80th birthday.
Abstract
A new series of phenoxy-phenyl moieties containing tonghaosu analogs with varied B-ring 9 were synthesized and characterized by spectral studies. Their insect antifeedant activity against Pieris brassicae and insecticidal activity against Culex quinquefasciatus were investigated. Compound 9e exhibited excellent antifeeding activity.