Synthesis of the 2-chloro analogs of 3'-deoxyadenosine, 2',3'-dideoxyadenosine, and 2',3'-didehydro-2',3'-dideoxyadenosine as potential antiviral agents
作者:Andre Rosowsky、Vishnu C. Solan、Joseph G. Sodroski、Ruth M. Ruprecht
DOI:10.1021/jm00125a031
日期:1989.5
2-chloro-2',3'-dideoxyadenosine (2-ClddAdo), and 2-chloro-2',3'-didehydro-2',3'-dideoxyadenosine (2-ClddeAdo) were synthesized from 2-chloroadenosine (2-ClAdo) as candidate antiretroviral agents on the basis that 2-chloro substitution would prevent enzymatic deamination and increase efficacy relative to 2',3'-dideoxyadenosine (ddAdo). Reduction of 2-chloro-5'-(4,4'-dimethoxytrityl)-2',3'-O-thiocarbonyladenosine
2-氯-3'-脱氧腺苷(2-氯cordycepin),2-氯-2',3'-二脱氧腺苷(2-ClddAdo)和2-氯-2',3'-二氢-2',3'-由2-氯腺苷(2-ClAdo)作为候选抗逆转录病毒药物合成了双脱氧腺苷(2-ClddeAdo),其理由是2-氯取代相对于2',3'-二脱氧腺苷(ddAdo)可以防止酶促脱氨并提高功效。用n-Bu3SnH还原2-氯-5'-(4,4'-二甲氧基三苯甲基)-2',3'-O-硫代羰基腺苷,然后用AcOH去三苯甲基化,出乎意料地得到了2-氯cordycepin和2-氯腺嘌呤的混合物。用1,1'-硫代羰基二咪唑处理n-Bu3SnH还原粗产物,然后进行另一个n-Bu3SnH还原和硅胶去三苯甲酰化的循环,得到2-ClddAdo和副产物2-氯-2',3'-O-亚甲基腺苷。用1,3-二甲基-2-苯基-1,3,2-二氮杂磷腈处理2-氯-5'-O-(4,4'-二甲氧基三