Nucleosides and Nucleotides. 143. Synthesis of 5-Amino-4-imidazolecarboxamide (AICA) Deoxyribosides from Deoxyinosines and Their Conversion into 3-Deazapurine Derivatives.
作者:Noriaki MINAKAWA、Yoshimasa SASABUCHI、Arihiro KIYOSUE、Naoshi KOJIMA、Akira MATSUDA
DOI:10.1248/cpb.44.288
日期:——
An efficient and large scale chamical synthesis of 5-aminoimidazole-4-carboxamide (AICA) 2'-deoxyriboside (5a) and its 3'-deoxyriboside 5b is described. Treatment of 3', 5'-di-O-acetyl-N1-triphenylmethyl-2'-deoxyinosine (3a) with 5 N NaOH in EtOH, followed by anhydrous trifluoroacetic acid gave 5a in 59% yield from 2'-deoxyinosine (1a). AICA 3'-deoxyriboside (5b) was also obtained in a similar manner as for 5a in 73% yield from 3'-deoxyinosine (1b). Conversion of these AICA derivatives (5a, b) into 3-deazapurine derivatives (9a, b, 15a, b, 20a, b) is also described.
描述了一种高效且大规模的5-氨基咪唑-4-氨基乙酸(AICA)2'-脱氧核糖苷(5a)及其3'-脱氧核糖苷(5b)的化学合成。将3', 5'-二-O-乙酰基-N1-三苯甲基-2'-脱氧腺苷(3a)用5 N氢氧化钠在乙醇中处理,随后用无水三氟乙酸处理,从2'-脱氧腺苷(1a)得到的5a的产率为59%。AICA 3'-脱氧核糖苷(5b)也以类似的方式从3'-脱氧腺苷(1b)获得,产率为73%。还描述了将这些AICA衍生物(5a、b)转化为3-去氨嘌呤衍生物(9a、b,15a、b,20a、b)。