Fig. 5
Chemical structures of compounds 40–56. Antimycin A1a (40), acetylspiramycin (41), brefeldin a (42), abamectin (43), debromoaplysiatoxin (44), bafilomycin (45), azadirachtin a (46), gedunin (47), deacetylnimbin (48), vernodalol (49), daucovirgolide g (50), 6-o-angeloxyl-8-o-senecioyl-6β,8α,11-trihydroxygermacra-1(10)e,4e-diene (51), parthenin (52), parthenolide (53), 1α,4α -dihydroxybishopsolicepolide (54), artemisone (55), artemiside (56)