Tagalsins A-H, dolabrane-type diterpenes from the mangrove plant, Ceriops tagal

From the stems and twigs of the mangrove plant, Ceriops tagal, seven dolabrane-type diterpenes, namely tagalsins A-G (1-7), and the norditerpenetagalsin H (8) were isolated. Their structures were established on the basis of extensive spectroscopic analysis.