The Synthesis of (3H)-Gibberellin A9with High Specific Activity

Abstract
The synthesis of 2,3-(3H)-gibberellin A9 (GA9) with a specific activity of 47 Ci mmol-1 was described. .DELTA.2,3GA9 methyl ester epoxide was converted to (3H)-GA9 methyl ester epoxide using carrier-free tritium gas. This product was de-epoxidized then hydrolyzed to yield (3H)-GA9.

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