Natural Product Communications 2015-Jun
neo-Clerodane Diterpenoids from Ajuga macrosperma var. breviflora.
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Abstract
Six new naturally occurring ajugarin-like neo-clerodane diterpenoids, ajugaflorins A-F, along with six known compounds [the parent ajugarin I, ajugalides B and C, ajugamarin F4, ajugamacrin E, and ajugatakasin B] were isolated from A. macrosperma var. breviflora. The structures were elucidated by extensive NMR spectroscopic and MS analyses and comparison with data previously reported.