Regioselective cyclocondensation of glycine hydroxamic and dl-alanine hydroxamic acids with 1-methylpiperidin-4-one gave 1-hydroxy-8-methyl-1,4,8-triazaspiro[4.5]decan-2-one (5) and (±)-1-hydroxy-3,8-dimethyl-1,4,8-triazaspiro[4.5]decan-2-one (6), respectively. The X-ray diffraction data showed that acid 6 formed racemic crystals with two independent molecules, whose structure was studied and compared
甘
氨酸异羟
肟酸和 dl-丙
氨酸异羟
肟酸与 1-methylpiperidin-4-one 的区域选择性环缩合反应得到 1-hydroxy-8-methyl-1,4,8-triazaspiro[4.5]decan-2-one (5) 和 (±) -1-羟基-3,8-二甲基-1,4,8-triazaspiro[4.5]decan-2-one (6) 分别。X射线衍射数据表明酸6形成了具有两个独立分子的外消旋晶体,对其结构进行了研究并与之前获得的类似物进行了比较。对白血病P388和L1210模型的体内试验表明,低毒螺环异羟
肟酸5和6是临床细胞
抑制剂顺铂和环
磷酰胺的佐剂。分别使用酸 6 与
顺铂和环
磷酰胺的组合对白血病 P388 和 L1210 进行化疗更有效。