Abstract
Here we describe the isolation and structural determination of the new saturated pyrrolizidine monoester alkaloids, 3′-acetyltrachelanthamine, floridine, floridinine and floridimine, along with the known one, heliovicine, from Heliotropium floridum. Their structures were established by high resolution NMR (including 2D NMR experiments), mass spectrometry, chemical reactions and by correlation with published data of known compounds. Bioassays of the alkaloidal extract and its major components against several insect pests and plant pathogens showed that 3′-acetyltrachelanthamine is a strong anti-feedant, with low toxicity against Leptinotarsa decemlineata and a moderate anti-fungal agent against Fusarium monoliforme; floridinine only showed the anti-fungal effect.
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.
