The synthesis of 1 -methyl- and 1α,2α-methylene-gibberellins
作者:Jake MacMillan、Christine L. Willis
DOI:10.1039/p19850002177
日期:——
enone with sodiumborohydride gave 1α-methylGA4methyl ester, which was hydrolysed to 1α-methylGA4, and 1α-methyl-3-epi-GA4, methyl ester which was deoxygenated to give 1α-methylG9. The palladium-catalysed reduction of the 1-methyl enone gave 1β-methylGA4-3-ketone and 1α-methylGA4-3-ketone which were converted into the corresponding 1β-methylGA4 and 1α-methylGA4. The analogous synthesis of the C-l alkylated