PREPARATION OF 2- AND 3-SUBSTITUTED GIBBERELLINS A9 AND A4 FOR BIOASSAY

Article abstract of DOI:10.1016/0031-9422(81)85158-8

Key Word Index - Partial synthesis; 2α,2β- and 3β-derivatives; gibberellin A4; gibberellin A9. To test the effects of preventing enzymatic 2β- and 3β-hydroxylation on the biological activities of gibberellins, the preparation of the following compounds is described: 2β-methyl- and 2,2-dimethyl-gibberellins A4 and A9; 2α-fluoro-, 2β-fluoro- and 2β-methoxy-gibberellin A9; and 3β-fluoro, 3β-methoxy-and 3-methylene A9.