New and Facile Synthesis of 5,6,7,8-Tetrahydro-5-deaza-5-thiapterins via the Aliphatic S-N Type Smiles Rearrangement.
作者:Magoichi SAKO、Reiko TOTANI、Kosaku HIROTA、Yoshifumi MAKI
DOI:10.1248/cpb.42.806
日期:——
5, 6, 7, 8-Tetrahydro-5-deaza-5-thiapterins, (1a, 1d, and 1e), were conveniently synthesized by the thermal condensation of 5-bromo-6-chloroisocytosine (5) with cysteamines (6a-c) via the aliphatic S-N type Smiles rearrangement in ethanolic pH 7.0 buffer solution.
在 pH 值为 7.0 的乙醇缓冲溶液中,通过脂肪族 S-N 型 Smiles 重排,5-溴-6-氯异胞嘧啶(5)与半胱胺(6a-c)发生热缩合反应,从而方便地合成了 5、6、7、8-四氢-5-脱氮-5-硫代螯合苷(1a、1d 和 1e)。