作者:James L. Kelley、Ed W. McLean
DOI:10.1002/jhet.5570230445
日期:1986.7
Synthesis of 9-(2-fluorobenzyl)-6-methylamino-9H-purine (1) from nine different precursors is reported. Compound 1 was prepared by methylamination of 6-chloro-9-(2-fluorobenzyl)-9H-purine (4), by alkylation of 6-methylaminepurine (5) or form 9-(2-fluorobenzyl)-1-methyladeninium iodide (8) via the Dimroth rearrangement. Selective 2-step methylation of 6-aminopurine 6 was accomplished by hydride reduction
据报道由九种不同的前体合成9-(2-氟苄基)-6-甲基氨基-9 H-嘌呤(1)。化合物1的制备是通过将6-氯-9-(2-氟苄基)-9-甲氨基化ħ嘌呤(4)中,由6- methylaminepurine(烷基化5)或形式9-(2-氟苄基)-1- methyladeninium碘化(8)通过Dimroth重排。6-氨基嘌呤的选择性两步骤甲基化6用氢化物还原的6- formamidopurine完成9,6-dimethylaminomethyleneaminopurine 10或6-苯硫基嘌呤11,得到1化合物1也通过dethiation或2-甲硫基嘌呤的还原脱氯制备16或8氯嘌呤19,分别,或由6-水解Ñ -methylformamidopurine 12,将其从6-二甲基氨基制备13通过选择性氧化。