Reaction of fluoromethyloxirane (III) with heterocyclic bases in the presence of potassium carbonate afforded N-(3-fluoro-2-hydroxypropyl) derivatives of adenine (VI), 3-deazaadenine (VII), 2-amino-6-chloropurine (XII), 6-nitro-1-deazapurine (IX), 4-methoxy-2-pyrimidone (XVIII) and its 5-methyl derivative (XIX). Acid hydrolysis of compounds XII, XVIII, and XIX gave 9-(3-fluoro-2-hydroxypropyl)guanine (XIII), 1-(3-fluoro-2-hydroxypropyl)uracil (XX) and -thymine (XXI). The intermediates XVIII and XIX were ammonolyzed to give 1-(3-fluoro-2-hydroxypropyl)cytosine (XXII) and -5-methylcytosine (XXIII). Reaction of chloro derivative XII with sodium azide followed by hydrogenation of the formed 2-amino-6-azidopurine (XIV) led to 9-(3-fluoro-2-hydroxypropyl)-2,6-diaminopurine (XV). 9-(3-Fluoro-2-hydroxypropyl)-1-deazaadenine (X) was obtained by hydrogenation of compound IX. Benzyloxymethyloxirane (XXIV) was reacted with pyridine-hydrogen fluoride adduct to give 3-benzyloxy-2-fluoropropanol (XXV) whose tosylate XXVI on reaction with sodium salt of adenine and subsequent hydrogenolysis of the intermediate XXVII afforded 9-(2-fluoro-3-hydroxypropyl)adenine (XXVIII). The same compound was obtained by reaction of 3-benzyloxy-1-bromo-2-fluoropropanol (XXX) with sodium salt of adenine followed by methanolysis. Condensation of sodium salt of XI, XVI, and XVII with synthon XXX and subsequent acid deblocking gave 9-(2-fluoro-3-hydroxypropyl)guanine (XXXIII), 1-(2-fluoro-3-hydroxypropyl)uracil (XXXVI), and 1-(2-fluoro-3-hydroxypropyl)thymine (XXXVII). 1-(2-Fluoro-3-hydroxypropyl) derivatives of cytosine (XXXVIII) and 5-methylcytosine (XXXIX) were obtained by ammonolysis of the corresponding 4-methoxypyrimidine intermediates XXXIV and XXXV.
氟甲氧环氧烷(III)与杂环碱在
碳酸钾存在下反应,得到
腺嘌呤(VI)、3-脱氮
腺嘌呤(VII)、
2-氨基-6-氯嘌呤(XII)、6-硝基-1-脱氮
嘌呤(IX)、4-甲氧基-2-
嘧啶酮(XVIII)及其5-甲基衍
生物(XIX)的N-(3-
氟-2-羟基丙基)衍
生物。化合物XII、XVIII和XIX的酸
水解产物分别为9-(3-
氟-2-羟基丙基)
鸟嘌呤(XIII)、1-(3-
氟-2-羟基丙基)尿
嘧啶(XX)和-胸腺
嘧啶(XXI)。中间体XVIII和XIX经
氨解反应得到1-(3-
氟-2-羟基丙基)
胞嘧啶(XXII)和-5-甲基
胞嘧啶(XXIII)。
氯衍
生物XII与
叠氮化
钠反应,随后氢化形成2-
氨基-6-
叠氮基
嘌呤(XIV),再经氢解反应得到9-(3-
氟-2-羟基丙基)-
2,6-二氨基嘌呤(XV)。化合物IX经氢化反应得到9-(3-
氟-2-羟基丙基)-1-脱氮
腺嘌呤(X)。苄氧甲氧环氧烷(XXIV)与
吡啶-
氢氟酸加合物反应,得到3-苄氧基-2-
氟丙醇(XXV),其
磺酸酯XXVI与
腺嘌呤的钠盐反应,随后中间体XXVII的氢解反应得到9-(2-
氟-3-羟基丙基)
腺嘌呤(XXVIII)。通过化合物XXX与
腺嘌呤的钠盐反应,随后
甲醇解反应,得到同一化合物。钠盐的Xl、XVI和XVII与合成物XXX的缩合反应,随后酸去保护反应,得到9-(2-
氟-3-羟基丙基)
鸟嘌呤(XXXIII)、1-(2-
氟-3-羟基丙基)尿
嘧啶(XXXVI)和1-(2-
氟-3-羟基丙基)胸腺
嘧啶(XXXVII)。通过相应的4-
甲氧基嘧啶中间体XXXIV和XXXV的
氨解反应,得到1-(2-
氟-3-羟基丙基)
胞嘧啶(XXXVIII)和5-甲基
胞嘧啶(XXXIX)。