PHOTOCYCLISIERUNG EINES GIBBERELLINALDEHYDS ZU EPIMEREN CYCLOBUTANOLEN UND DEREN BASISCHE RUECKSPALTUNG, PARTIALSYNTHESE VON 16,17-DIHYDRO-Δ15-GIBBERELLIN-A3

Article abstract of DOI:10.1016/S0040-4039(00)93620-7

UV-irradiation of the aldehyde 1 leads to the 7-epimeric cyclobutanols 2a and 2b which undergo upon treatment with NaOCH3 retroaldol-like cleavage to 1 and 3.Oxidation and deacetylation of 3 affords the 16,17-dihydro-Δ₁₅-gibberellin-A³ (5).