Synthesis of Optically Active 6-Alkynyl- and 6-Alkylpurines as Cytokinin Analogs and Inhibitors of 15-Lipoxygenase; Studies of Intramolecular Cyclization of 6-(Hydroxyalkyn-1-yl)purines
作者:Tom Christian Berg、Lise-Lotte Gundersen、Aud Berglen Eriksen、Karl E. Malterud
DOI:10.1002/ejoc.200500417
日期:2005.12
Optically active 6-alkynyl- and 6-alkylpurines have been synthesized. These compounds can be regarded as analogs of cytokinin plant growth hormones. The analogs were examined as growth stimulators and as inhibitors of 15-lipoxygenase (15-LO). The (S)-enantiomer of 6-(5-hydroxy-4-methylpent-1-yl)purine exhibited profound growth stimulation activity, especially at low concentrations. 6-(Hydroxyalkyn-1-yl)purines
已经合成了光学活性的 6-炔基和 6-烷基嘌呤。这些化合物可视为细胞分裂素植物生长激素的类似物。这些类似物被检测为生长刺激剂和 15-脂肪氧化酶 (15-LO) 抑制剂。6-(5-hydroxy-4-methylpent-1-yl) 嘌呤的 (S)-对映异构体表现出强烈的生长刺激活性,尤其是在低浓度下。发现 6-(Hydroxyalkyn-1-yl) 嘌呤通过来自三键羟基的亲核外向攻击而环化。(Z)-异构体在酸性条件下形成。在环化产物中鉴定出植物生长刺激剂和 15-LO 抑制剂。(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2005)