Synthesis and antitumor activity of cyclophosphamide analogs. 4. Preparation, kinetic studies, and anticancer screening of phenylketophosphamide and similar compounds related to the cyclophosphamide metabolite aldophosphamide
作者:Susan Marie Ludeman、Victoria Lee Boyd、Judith B. Regan、Kathleen A. Gallo、Gerald Zon、Kiyoshi Ishii
DOI:10.1021/jm00155a022
日期:1986.5
the phenyl group; however, differences between phenyl and methyl profoundly influenced the rates of fragmentation of 14a and 20. 31P NMR spectroscopy was used to determine the rates at which each compound generated a cytotoxic alkylating agent. Under a standard set of reaction conditions [1 M lutidine buffer with added Me2SO (8:2), pH 7.4, 37 degrees C], the half-lives of 2a/3a, 14a, phenylketoifosfamide
结合正在进行的取代基对环磷酰胺(1a)代谢物的动态溶液化学作用的研究,合成了苯酮二氨基磷酸二酰胺[C6H5C(O)CH2CH2OP(O)NHR1NR2R3]。与易于与其环状异构体4-羟基环磷酰胺(2a)相互转化的aldophosphamide(3a)相比,苯基酮磷酰胺(14a:R1 = H,R2 = R3 = CH2CH2Cl)对分子内加成反应表现出明显的“抗性”,使得4光谱(31P或13C NMR)或化学(NaCN捕获实验)均无法检测到-羟基-4-苯基环磷酰胺(13a)。对照研究比较了14a和甲基酮磷酰胺的相对反应性[20:CH3C(O)CH2CH2OP(O)NH2N-(CH2CH2Cl)2]揭示调节闭环/开环反应的因素不是苯基所特有的。但是,苯基和甲基之间的差异极大地影响了14a和20的断裂速率。31PNMR光谱用于确定每种化合物产生细胞毒性烷基化剂的速率。在一组标准反应条件下[1 M