作者:Charles J. Barnett、Lana M. Grubb
DOI:10.1016/s0040-4020(00)00895-4
日期:2000.11
The total synthesis of Q Base (Queuine) has been accomplished in eleven steps from ribose. Mitsunobu reaction of nosyl protected amine 12 with known cyclopentenol 7, derived from ribose, gave 13, the first key intermediate in the synthesis. The pyrrolo[2,3-d]pyrimidine ring system of Q Base was built via a cyclocondensation reaction between a β-aminobromoaldehyde 16, derived from the Mitsunobu product
Q碱(Queuine)的总合成已从核糖起十一步完成。壬基保护的胺12与衍生自核糖的已知环戊烯醇7的Mitsunobu反应得到13,这是合成中的第一个关键中间体。Q碱的吡咯并[2,3- d ]嘧啶环系统是通过源自Mitsunobu产物13的β-氨基溴醛16与2,4-二氨基-6-羟基嘧啶之间的环缩合反应建立的。产物从环缩合反应(17)中脱保护,得到Q碱。