Abstract
Leucosceptroid O (1), an unusual sesterterpenoid possessing a spiro α,β-unsaturated γ-lactone moiety, was discovered from the flowers of a large woody Labiatae, Leucosceptrum canum. Its structure including absolute stereochemistry was determined by comprehensive NMR, MS, and single-crystal X-ray diffraction (with copper radiation) analyses. The obvious antifeedant activity of 1 against the generalist plant-feeding insect Helicoverpa armigera suggested that it to be a new defensive sesterterpenoid of Leucosceptrum canum.
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.
