<i>In vitro</i>biotransformation of 2,6,9-trisubstituted purine-derived cyclin-dependent kinase inhibitor bohemine by mouse liver microsomes
作者:M. Rypka、J. Veselý、Z. Chmela、D. Riegrová、K. Červenková、L. Havlíček、K. Lemr、J. Hanuš、B. Černý、J. Lukeš、K. Michalíková
DOI:10.1080/0049825021000012600
日期:2002.1
confirmed by synthesis of authentic compounds. 3. A schema of the primary NADPH-dependent pathways has been proposed involving N(2)- and N9-dealkylation, N(6)-debenzylation, aromatic hydroxylation, and C2 side chain oxidation of bohemine. Three of the primary metabolites detected, 6-(benzylamino)-2-(3-hydroxypropylamino)purine (M4), 6-amino-2-(3-hydroxypropylamino)-9-isopropylpurine (M5) and 6-(4-hydro
1.研究了细胞周期蛋白依赖性激酶抑制剂6-苄基氨基-2-(3-羟丙基氨基)-9-异丙基嘌呤(波西米因)在小鼠肝微粒体内的体外转化途径。2.通过TLC /(3)H-放射自显影建立[8-(3)H]标记的波西米碱的代谢物谱,并使用酶和MS分析来阐明代谢物的化学结构。主要初级代谢产物的结构通过合成真实的化合物得到确认。3.已提出了一个主要的NADPH依赖性途径的示意图,涉及N(2)-和N9-脱烷基,N(6)-脱苄基,芳族羟基化和波西米纳的C2侧链氧化。检测到三个主要代谢物,6-(苄氨基)-2-(3-羟丙基氨基)嘌呤(M4),6-氨基-2-(3-羟丙基氨基)-9-异丙基嘌呤(M5)和6-(4-羟基苄基氨基)-2-(3-羟丙基氨基)-9-异丙基嘌呤(M6),均保留其母体伯羟基,随后被证明是由肝脏胞质NAD(+)依赖性系统转化为它们相应的羧酸。M6经受了微粒体糖苷化,需要UDP糖供体。还证实了微粒体的NADPH依赖性M6转化为M5。4