Journal
MOLECULES
Volume 20, Issue 1, Pages 839-845Publisher
MDPI
DOI: 10.3390/molecules20010839
Keywords
Leonurus japonicus; labdane diterpenoid; isoleojaponin; halimane
Funding
- National Natural Science Foundation of China [U1304825, U1204213, 201302004, 21304001]
- Foundation of the Ministry of Education of China for Returned Scholars [2013.693]
- Henan province [U1304825, U1204213]
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Leojaponin (2), a labdane diterpene, was isolated from the EtOH extract of the herb of Leonurus japonicus together with a new halimane diterpene named isoleojaponin (1). Isoleojaponin has a new diterpene skeleton with a unique cross-conjugated alpha,beta-unsaturated ketone system, Their structures were elucidated by physical and spectroscopic analysis, and the relative configuration of the chiral C-9 carbon was determined by a computational method, and analysis of its possible biogenesis pathways.
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