Bishomoscalarane Sesterterpenoids from the Sponge Dysidea granulosa Collected in the South China Sea

Granulosane A (1), a new C27 bishomoscalarane sesterterpenoid with a rare 6/6/6/8 tetracyclic skeleton, together with eight additional new C27 bishomoscalarane sesterterpenes (2, 8–14) and five new...