Pyrrolizidine Alkaloids from Parsonsia laevigata in Okinawa Island (Studies on Parsonsia. V).

Abstract

Nine pyrrolizidine alkaloids includig three new compounds, were isolated from Parsonsia laevigate collected in Okinawa Island. No courtship pheromone with a dihydropyrrolizine framework was detectable in hair-pencil of Idea leuconoe, whose worms feed on the leaves of Parsonsia laevigata.