Furanosesquiterpenoids in sponges VI. Further structural studies for spiniferins, sesquiterpenes fromPleraplysilla spinifera


The methylene bridged structure 3 is reassigned to spiniferin-1, unstable sesquiterpene from the spongePleraplysilla spinifera. Evidence leading us to choose structure2a betwen the 2 alternative formulations2a and2b earlier proposed for spiniferin-2 are also reported. 
DOI: 10.1007/BF01932327


2 Figures and Tables