Anti-mosquito and antimicrobial nor-halimanoids, isocoumarins and an anilinoid from Tessmannia densiflora

The larvicidal extracts from Tessmannia densiflora Harms (Caesalpiniaceae) yielded anti-mosquito and antibacterial nor-halimanoids 1 and 2 as active principles, and the unusual isocoumarin 6.