A new class of sesterterpenoids from the secretion of Ceroplastes rubens(coccidae)
Abstract
Five novel sesterterpenoids (1)–(5) from the secretion of the scale insect Ceroplastes rubens Maskell have been isolated and characterized to be the first representatives of series having the tricyclo[8.4.1.0.]pentadecane and tetracyclo[9.4.0.0.0.]pentadecane skeletons.