The Okinawa Islands are a crescent-shaped archipelago and their natural forests hold a huge variety of unique subtropical plants with relatively high endemism. We have performed phytochemical study on Okinawan subtropical plants for many years. In this review, we describe our recent research progress on the isolation of new compounds and their various bioactivities.
Keywords: Croton cascarilloides; Macaranga tanarius; Microtropis japonica; Okinawa; subtropical plant.