Abstract
COMPOUNDS which induce cell division in certain cultures of plant tissue have been termed cytokinins1. Zeatin, the first substance of this type to be isolated from a plant extract, has been shown to be 6-(4-hydroxy-3-methylbut-trans-2-enyl)aminopurine2. Shaw and Wilson3 prepared 4-amino-2-methylbut-trans-2-en-1-ol from methyl tiglate and condensed it with 6-methylmercaptopurine to yield zeatin. An alternative synthesis for zeatin is now described. Values of the melting and boiling points are recorded for new compounds only. These all gave satisfactory elemental analyses.
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