A facile synthetic route has been developed for the preparation of pyrrolizinone derivatives employing N-allyl imides as starting materials. The nucleophilic addition of a vinyl Grignard reagent/RCM/elimination sequence afforded pyrrolizinones in good yields and has been applied for the preparation of naturally occurring quinolactacide and marinamide.
Synthesis of Quinolactacide<i>via</i>an Acyl Migration Reaction and Dehydrogenation with Manganese Dioxide, and Its Insecticidal Activities
作者:Masaki ABE、Tetsuya IMAI、Naoki ISHII、Makio USUI
DOI:10.1271/bbb.70.303
日期:2006.1
was synthesized and evaluated for its insecticidal activities. The key steps of the total synthesis were an acyl migration reaction of the enol ester intermediate and dehydrogenation of tetrahydroquinolactacide with manganesedioxide. The synthesized quinolactacide showed 100% and 42% mortality against the green peach aphid (Myzus persicae) and diamondback moth (Plutella xylostella) at 500 ppm, respectively