Nucleic acid related compounds. 74. Synthesis and biological activity of 2'(and 3')-deoxy-2'(and 3')-methylenenucleoside analogs that function as mechanism-based inhibitors of S-adenosyl-L-homocysteine hydrolase and/or ribonucleotide reductase
作者:Morris J. Robins、Vicente Samano、Weijian Zhang、Jan Balzarini、Erik De Clercq、Ronald T. Borchardt、Younha Lee、Chong Sheng Yuan
DOI:10.1021/jm00090a020
日期:1992.6
with TBDMS chloride/imidazole/DMF gave a separable mixture of 5'-O, 2',5'-bis-O (22), 3',5'-bis-O (23), and 2',3',5'-tris-O-TBDMS derivatives. Oxidation of 22 and 23 with CrO3/pyridine/Ac2O, treatment of the respective ketonucleosides with methylenetriphenylphosphorane, and deprotection gave 2-amino-6-chloro-9-[3(and 2)-deoxy-3(and 2)-methylene- beta-D-erythro-pentofuranosyl]purines (28 and 37) that
用TBDMS氯化物/咪唑/ DMF处理2-氨基-6-氯-9-(β-D-呋喃呋喃糖基)嘌呤(21)得到5'-O,2',5'-bis-O的可分离混合物( 22),3',5'-bis-O(23)和2',3',5'-tris-O-TBDMS衍生物。用CrO3 /吡啶/ Ac2O氧化22和23,用亚甲基三苯基膦烷处理各个酮核苷,并脱保护得到2-氨基-6-氯-9- [3(和2)-脱氧-3(和2)-亚甲基- β-D-赤型-五呋喃糖基]嘌呤(28和37)被转化为其他2-氨基-6-取代的嘌呤类似物。通过类似的方法,将结核菌素转化为2'-脱氧-2'-亚甲基tubercidin(49)。研究了2'-和3'-亚甲基腺苷类似物对S-腺苷-L-高半胱氨酸水解酶的灭活作用。