Reaction of adenosine with sulfuryl chloride gave two compounds, 5'-chloro-5'-deoxyadenosine 2', 3'-cyclic sulfate (I) and N3, 3'-cycloadenosine derivative (II). I was converted into 2'-sulfate (III) and 3'-sulfate (IV) by treatment with aqueous alkali and into N4, 3'-cyclo-4-aminoimidazole 5-carboxamidine nucleoside (V) by treatment in aqueous ethanol at an elevated temperature. 5'-Chloro-5'-deoxyadenosine (VI) derived from adenosine by reaction with thionyl chloride was readily converted into N3, 5'-cycloadenosine chloride (VIII). VIII was transformed into N4, 5'-cyclo-4-aminoimidazole 5-carboxamidine nucleoside (XII) via the unidentified characteristic compound (X) by reaction with diluted alkali. Characteristic changes of ultraviolet spectra of VIII were described.
腺苷与
硫酰氯反应生成两种化合物:
5'-氯-5'-脱氧腺苷 2',3'-环
硫酸盐(I)和 N3,3'-环
腺苷衍
生物(II)。I 通过
水碱处理转化为 2'-
硫酸盐(III)和 3'-
硫酸盐(IV),通过在
水乙醇中高温处理转化为 N4,3'-环-
4-氨基咪唑 5-
甲脒核苷(V)。
腺苷与亚
硫酰氯反应生成的
5'-氯-5'-脱氧腺苷(VI)很容易转化为 N3,5'-环
氯化
腺苷(VIII)。VIII 与稀碱反应后,通过不明特征化合物 (X) 转化为 N4,5'-环-
4-氨基咪唑 5-
甲脒核苷 (XII)。描述了 VIII 紫外光谱的特征变化。