Studies on tRNA and related compounds. XXXVII. Synthesis and physical properties of 2'- or 3'-O-(o-nitrobenzyl)nucleosides: the use of o-nitrophenyldiazomethane as a synthetic reagent.
作者:EIKO OHTSUKA、TOSHIAKI WAKABAYASHI、SHOJI TANAKA、TOSHIKI TANAKA、KAZUYUKI OSHIE、AKIRA HASEGAWA、MORIO IKEHARA
DOI:10.1248/cpb.29.318
日期:——
2'-and 3'-O-(o-Nitrobenzyl) derivatives of uridine, cytidine, adenosine and guanosine were synthesized by treatment of uridine, N-benzoylcytidine, N-benzoyladenosine and N-isobutyrylguanosine, respectively, with o-nitrophenyldiazomethane followed by isolation and deblocking. 3'-O-(o-Nitrobenzyl) guanosine is a novel compound. By using N-acylated nucleosides, separation of the 2'-and 3'-substituted isomers on silica gel became feasible and these compounds were useful intermediates for the synthesis of oligoribonucleotides. Some physical properties of these compounds were studied by ultraviolet, nuclear magnetic resonance, circular dichroism and the 2'-substituted isomers were found to have more stacked structures than the 3'-isomers.
通过将尿苷、N-苯甲酰胞苷、N-苯甲酰腺苷和N-异丁酰鸟苷分别与邻硝基苯基二氮甲烷处理,然后进行分离和去阻断,合成了尿苷、胞苷、腺苷和鸟苷的2'-和3'-O-(邻硝基苯甲基)衍生物。3'-O-(邻硝基苯甲基)鸟苷是一种新型化合物。通过使用N-酰化核苷,使在硅胶上分离2'-和3'-取代异构体成为可能,这些化合物是合成寡核糖核苷酸的有用中间体。通过紫外线、核磁共振、圆二色性等方法研究了这些化合物的一些物理性质,发现2'-取代异构体比3'-异构体具有更紧密的堆积结构。