フリニルアミノ酸,フリニルヘフタイトおよび関連化合物のサイトカイニン活性について(A. 理学)

概要

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Four N-(purin-6-yl) amino acids, six N-(purin-6-yl) peptides, three ethyl esters of the latter, and some related compounds were tested for their cytokinin activities by the tobacco callus bioassay and lettuce seed germination. Among the N-(purin-6-yl) amino acids, N-(purin-6-yl)-L-phenylalanine exhibited a weak cytokinin activity at 100μM in the tobacco callus bioassay, although around 10000 times less active than kinetin, but no any activity in lettuce seed germination. The N-(purin-6-yl) peptides tested were all inactive in both bioassays. However, esterification with the ethyl group in N-(purin-6-yl) glycylglycine and N-(purin-6-yl)-L-phenylalanylglycine enhanced the cytokinin activity; they were weakly active at 100μM in the tobacco callus bioassay, but inactive in lettuce seed germination. (±)-2-Methyl-4-(purin-6-ylamino) butyric acid was active at 1-100μM in the tobacco callus bioassay and its methyl ester showed a stronger cytokinin activity. Analogous amino acid or peptide derivatives with a naphthalene or pyrimidine ring instead of the purine ring were inactive.
京都府立大学の論文
1988-11-18