Alkylation of adenine with functionalized tert.-Propargyl carbonates. Synthesis of 3′-hydroxymethyladenallene — A new analogue of 2′-deoxyadenosine
作者:Ze-Qi Xu、Ramachandra V. Joshi、Jiri Zemlicka
DOI:10.1016/0040-4020(94)00964-v
日期:1995.1
Esters 9d – 9g derived from acetylenic carbinol 5 were prepared and they were studied as potential alkylating agents with adenine (10), N6-benzoyl- and N6-dimethylamino-methyleneadenine (16 and 17). Carbonates 9f and 9g were the most suitable giving allene 11 and acetylene 12 (after N-deprotection in case of 16 and 17). On a scale larger than 0.2 mmol, slow addition of carbonate 9f or 9g to a solution
制备了从炔属甲醇5衍生的酯9d – 9g,并与腺嘌呤(10),N 6-苯甲酰基-和N 6-二甲基氨基-亚甲基腺嘌呤(16和17)一起作为潜在的烷基化剂进行了研究。碳酸盐9f和9g是最合适的给出烯丙基11和乙炔12(在16和17的情况下在N-脱保护之后)。上的尺度大于0.2毫摩尔,缓慢加入碳酸9F或9克到的溶液10,16或17在60°C的DMF中最有利于烯丙基衍生物11的形成。这样的条件还抑制了在碳酸甲酯9f的情况下观察到的副产物如碳酸盐13a和N 9-甲基腺嘌呤(14)的形成。使用BCl 3在CH 2 Cl 2中将中间体11和12脱保护,分别得到3'-羟甲基腺嘌呤(4a)和二醇15。用腺苷脱氨酶将化合物4a脱氨基。