115
configuration proposed for an epoxide ring of a sesquiterpenoid always should be
checked carefully. From sample 5,2-hydroxyplatyphyllide (121), an epoxide (288),
two 1-oxoeremophilenolides (418 and 419), five aromatic compounds (913, 1013,
1024, 1029, and 1030), and a guaiane-type sesquiterpenoid (777, major constituent)
were isolated [98].
Sample 6 was collected in Kazakhstan and produced the furanolactone 212, the
dilactone 490, the 10-OH-furanoeremophilane 232, and the bakkane-type sesquiterpenoid 632 [143]. Recently, the isolation and characterization of a dilactone (491),
Fig. 40 Di(tri)meric eremophilanes (5)
Chemical Constituents of Ligularia Species (Asteraceae) and Their Diversity…
configuration proposed for an epoxide ring of a sesquiterpenoid always should be
checked carefully. From sample 5,2-hydroxyplatyphyllide (121), an epoxide (288),
two 1-oxoeremophilenolides (418 and 419), five aromatic compounds (913, 1013,
1024, 1029, and 1030), and a guaiane-type sesquiterpenoid (777, major constituent)
were isolated [98].
Sample 6 was collected in Kazakhstan and produced the furanolactone 212, the
dilactone 490, the 10-OH-furanoeremophilane 232, and the bakkane-type sesquiterpenoid 632 [143]. Recently, the isolation and characterization of a dilactone (491),
Fig. 40 Di(tri)meric eremophilanes (5)
Chemical Constituents of Ligularia Species (Asteraceae) and Their Diversity…