Synthesis and antitubercular activity of nucleoside analogs based on L-ascorbic acid and bases
作者:R. P. Tripathi、Namrata Dwivedi、Nimisha Singh、Mridul Misra
DOI:10.1007/s00044-007-9036-5
日期:2008.6
methanesulfonyloxy derivative with imidazole, benzimidazole, and adenine resulted in the corresponding tetronolactonyl nucleoside analogs 5 , 6, and 7 . Compound 5 on reaction with benzyl amine led to the N -benzylated teramyl nucleoside analog, while compounds 6 and 7 did not react under similar conditions. All the synthesized compounds were evaluated for their antitubercular activity against M. tuberculosis
5,6 - O- 异亚丙基-2,3-二 -O- 甲基抗坏血酸( 2 ),是通过丙酮与抗坏血酸( 1 )反应,然后在1,8-二氮杂双环上用甲基碘甲基化而制得的[5.4]。 0]十一烷基-7-烯催化的丙酮部分的消除导致形成各自的2,3-二 -O- 甲基二氢-L-抗坏血酸( 4 ),产率高。后者,与甲磺酰氯,并用咪唑,苯并咪唑粗甲磺酰衍生物的随后的反应,和腺嘌呤甲磺酰化导致相应tetronolactonyl核苷类似物 5 , 6, 和 7 。化合物 5 与苄基胺反应生成 N- 苄基化的 叔戊基核苷类似物,而化合物 6 和 7 在相似条件下不反应。评价所有合成的化合物对 结核分枝杆菌 H 37 R a和H 37 R v的抗结核活性 ,其最低抑菌浓度(MIC)大于12.5μg/ mL。