Synthesis of purinobenzothiazine and pyridothiazinopurine derivatives. Two new heterocyclic ring systems
作者:Antonio Da Settimo、Anna Maria Marini、Giampaolo Primofiore、Federico Da Settimo、Daniele Bertini
DOI:10.1002/jhet.5570350111
日期:1998.1
The synthesis of derivatives of two new heterocyclic systems, purino[8,7-b][1,3]benzothiazine and pyrido[3′,2′:5,6][1,3]thiazino[3,2-f]purine, was effected by the Ullmann reaction between 8-mercaptotheophylline or 8-bromotheophylline with the appriopriately substituted benzoic or nicotinic acid, respectively. The 8,8′-dithiobistheophylline is also reported.
嘌呤[8,7- b ] [1,3]苯并噻嗪和吡啶基[3',2':5,6] [1,3]噻嗪[3,2- f ]这两个新的杂环系统的衍生物的合成嘌呤是由8-巯基茶碱或8-溴茶碱分别与适当取代的苯甲酸或烟酸之间的Ullmann反应影响的。还报道了8,8′-二硫代双茶碱。