Isolation and Structure of Gibberellin A18 from Immature Seeds of Lupinus luteus

A new gibberellin, tentatively called Lupinus gibberellin I, was isolated from young yellow lupin seeds. It has been shown to have structure (X), and now named gibberellin A₁₈.     

Isolation of a New Cytokinin from Immature Yellow Lupin Seeds

A new cytokinin was isolated from methanol extracts of immature lupin seeds (Lupinus luteus) through successive purification of charcoal adsorptions, silver precipitations, ion exchange and paper chromatography. The structure was confirmed by spectral data and synthesis as (?)-6-N-(4-hydroxy-3-methylbutylamino)purine, (?)-dihydrozeatin (I).