Absolute Stereochemical Assignment and Fluorescence Tuning of the Small Molecule Tool, (-)-Blebbistatin
作者:Cristina Lucas-Lopez、Stephen Patterson、Till Blum、Aaron F. Straight、Judit Toth、Alexandra M. Z. Slawin、Timothy J. Mitchison、James R. Sellers、Nicholas J. Westwood
DOI:10.1002/ejoc.200500103
日期:2005.5
discovered small molecule inhibitor of the ATPase activity of non-muscle myosin II has been prepared from methyl 5-methylanthranilate (6) in three steps. This flexible synthetic route has also been used to prepare a nitro group-containing analogue 12 that has modified fluorescence properties and improved stability under microscope illumination. The key step in the synthesis of 1 and its analogues was
(-)-Blebbistatin (1) 是最近发现的非肌肉肌球蛋白 II ATPase 活性的小分子抑制剂,已从 5-甲基邻氨基苯甲酸甲酯 (6) 分三步制备。这种灵活的合成路线也已被用于制备含硝基的类似物 12,该类似物在显微镜照明下具有改进的荧光特性和改进的稳定性。合成 1 及其类似物的关键步骤是使用 Davis oxaziridine 方法对喹诺酮中间体 3 进行不对称羟基化。通过对含有类似物 11 的重原子(溴)进行 X 射线晶体结构分析,(-)-blebbistatin (1) 的绝对立体化学显示为 S,随后将其还原并显示与 1 相同。