Abstract
Extraction of the aerial parts of Mikania rimachii afforded a new dihydrooxepine type elemadienolide, a rare triterpene, 3′,4-dihydroxy-3-methoxypropiophenone, and various common plant constituents. The aerial parts of Mikania microptera furnished four new dihydrooxepine type elemadienolides, seven new melampolides, a new nerolidol derivative as well as nerolidol itself, 5-hydroxymethyl-2-furfuraldehyde and various common plant constituents. Structures of the new substances were investigated by high field NMR techniques and chemical transformations. In the case of one of the melampolides, the structure was confirmed by an X-ray analysis. The stereochemistry of the biological divinyloxirane-dihydrooxepine rearrangement is discussed.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
