Partial synthesis of ent-13-hydroxy-2-oxo-20-norgibberella-1(10),16-diene-7,19-dioic acid, a catabolite of gibberellin A29, and of related compounds

Abstract

Gibberellin A₃ has been converted into the title compound, both unlabelled and labelled with oxygen-18, and the structure of a catabolite of gibberellin A₂₉ in developing seed of Pisum sativum has thereby been established. The methyl esters of four related compounds, occurring in seed of P. sativum have also been prepared including the 13-deoxy-analogue of the title compound.