Abstract
Photoceyclization of diacetylgibberellin-A3-7-aldehyde 1 leads to the epimeric hydroxycyclobutanes 2 and 3. The configurations at the new asymmetric centres at C-7 and C-15 of the four-membered ring have been determined by 1H-NMR (homonuclear decoupling and INDOR techniques). Retroaldol-like cleavage of 2 and 3 under mild alkaline conditions gives the starting aldehyde 1 and the Δ 15 -isomeric aldehyde 6. Oxidation and deacetylation of 6 afford 16,17-dihydro-15,16-dehydro-gibberellin-A 3 7.
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.
