Heating of 6-(benzylamino)-2-chloro-9-deazapurine (3) with ethanolamine afforded 6-(benzylamino)-2-[(2-hydroxyethyl)amino]-9-deazapurine (8). Its treatment with formaldehyde in alkaline solution, after protection of the OH group with DMTr, led to hydroxymethylation at position 9. Conversion of the hydroxymethyl group to methyl was performed by catalytic hydrogenation under simultaneous deprotection, which resulted in the formation of the 9-deaza analogue 1 of olomoucine. Compound 1 does not exhibit any significant in vitro cell growth inhibition of CCRF-CEM, HeLa and L-1210 cell lines. Cytostatic activity was found in 6-(benzylamino)-9-deazapurine (2) and its 2-chloro derivative 3 in CCRF-CEM cells with IC50 13.3 and 15.8 μM, respectively.
用乙醇胺加热6-(苄氨基)-2-氯-9-去嘌呤(3),制得6-(苄氨基)-2-[(2-羟乙基)氨基]-9-去嘌呤(8)。在DMTr保护羟基后,将其在碱性溶液中与甲醛处理,导致9号位的羟甲基化。通过同时去保护作用的催化氢化将羟甲基基团转化为甲基,形成奥洛莫信的9-去嘌呤类似物1。化合物1不表现出对CCRF-CEM,HeLa和L-1210细胞系的任何显着的体外细胞生长抑制作用。在CCRF-CEM细胞中,6-(苄氨基)-9-去嘌呤(2)及其2-氯衍生物3表现出细胞周期静止活性,IC50分别为13.3和15.8μM。