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Two new labdane diterpenoids named heteronone A (1) and heteronone B (2) were isolated from the aerial parts of Leonurus heterophyllus Sweet. Their structures were established by various spectroscopic means, and the structure of heteronone A is confirmed by X-ray diffraction analysis.
Two new labdane diterpenoids named heteronone A (1) and heteronone B (2) were isolated from the aerial parts of Leonurus heterophyllus Sweet. Their structures were established by various spectroscopic means, and the structure of heteronone A is confirmed by X-ray diffraction analysis .