Chemical and biochemical studies on carbohydrate esters. X. Plant growth inhibition by pure anomers of synthetic 1-O-lauroyl-D-glucopyranose.
作者:YOSHIHIRO NISHIKAWA、KIMIHIRO YOSHIMOTO、MASANORI OHKAWA
DOI:10.1248/cpb.29.878
日期:——
Anomerically pure, synthetic 1-O-lauroyl-α-and-β-D-glucopyranoses exhibited strong plant growth inhibiting activity in the Avena coleoptile straight growth test at a final concentration of 500/3 ppm. The growth inhibition ratios obtained with α-and β-anomers were 94.2% and 81.6%, respectively. Under the same conditions, 2-O-and 4-O-lauroyl-D-glucopyranoses and the mono-, di-, and poly-substituted products obtained by selective lauroylation of maltose were all found to be ineffective. In view of these results, the presence of a lauroyl function, either axial or equatorial, at the C-1 position of a monosaccharide unit appears to be important for this biological activity.
合成的 1-O-月桂酰基-α-和-β-D-吡喃葡萄糖的同分异构体纯度为 500/3 ppm,在莜麦直接生长试验中表现出很强的植物生长抑制活性。α和β-异构体的生长抑制率分别为 94.2% 和 81.6%。在相同条件下,2-O-月桂酰基-D-吡喃葡萄糖和 4-O-月桂酰基-D-吡喃葡萄糖,以及通过选择性月桂酰化麦芽糖得到的单取代、二取代和多取代产物均无效。鉴于这些结果,单糖单元的 C-1 位置上存在月桂酰基功能(轴向或赤道)似乎对这种生物活性很重要。