Regulators of Cell Division in Plant Tissues XIV. The Cytokinin Activities and Metabolism of 6‐Acylaminopurines

Abstract

AbstractCertain 6‐acylaminopurines have been shown to exhibit activity in several cytokinin bioassays. The active compunds included 6‐N,2′‐O‐dibutyryladenosine 3’:5′‐cyclic monophosphate, but adenosine 3′:5′‐cyclic monophosphate was inactive. The metabolites formed from [2,8‐3H] 6‐benzoylaminopurine by radish seedlings and excised radish cotyledons were investigated. When compared with zeatin, this amide showed considerable stability in vivo. Conversion to 6‐benzylaminopurine and its riboside was not detected but slight degradation to adenine was indicated. The principal metabolite was an unidentified compund.