Plochochka, Danuta; Rabczenko, Andrzej; Davies, David B., Journal of the Chemical Society. Perkin transactions II, 1981, p. 82 - 89
作者:Plochochka, Danuta、Rabczenko, Andrzej、Davies, David B.
DOI:——
日期:——
Selective N3- and 5?-O-Alkylation of 2?,3?-O-isopropylideneuridine with methyl iodide
作者:Jari Hovinen
DOI:10.1002/hlca.19970800319
日期:1997.5.12
The 2′,3′-O-isopropylideneuridine (1) reacts with MeI in the presence of an excess of NaH in THF giving 2′,3′-O-isopropylidene-5′-O-methyluridine (2). Prolonged reaction time gives rise to 2′,3′-O-isopropylidene-3,5′-O-dimethyluridine (4). The use of an equimolar amount of base and alkylating agent results predominantly in methylation at N(3) ( 3).
在2',3'- Ô -isopropylideneuridine(1)反应用MeI在过量的NaH的THF存在下给予2',3'- ö异亚丙基-5'- Ö -methyluridine(2)。延长的反应时间产生2′,3′ - O-异亚丙基-3,5′- O-二甲基尿苷(4)。等摩尔量的碱和烷基化剂的使用主要导致在N(3)(3)处的甲基化。