of 2‐C‐Spiro‐Glycosyl‐3‐Nitrochromenes with sodium azide in dry DMF at 100W, 120 oC for 1 minute. The structure of the product was assigned by 1H, 13C NMR and HRMS data and confirmed by single crystal X‐ray study.“2‐C‐Spiro‐Glycosyl‐3‐Nitrochromenes were synthesized byoxa‐Michael‐Aldol reaction of sugar derived 3‐C‐vinyl nitro olefin with substituted salicylaldehydes using Et3N as base in neat at
                                    微波辅助的一种新颖的方法已经开发,以获得(4-小号)-4- Ç -螺糖基- chromeno- [3,4-d] [1,2,3] triazolesfollowing 1,3- dipolarcycloadditionreaction 2- Ç -螺在干燥的
DMF中于100W,120 o C的条件下将
叠氮化
钠中的‐Glycosyl-3-Nytrochromenes与
叠氮化
钠混合1分钟。该产物的结构由1 H,13 C NMR和HRMS数据确定,并由单晶X射线研究证实。“ 2 - C-螺-糖基-3-
硝基苯二酮是通过糖衍生的氧杂-迈克尔-奥尔多反应合成的以Et 3 N为碱在rt-40 o处纯净的3‐ C‐
乙烯基硝基烯烃与取代的
水杨醛发现该方案具有成本效益,易于获得,底物范围广,产率高,纯度高,反应时间短等优点。此外,已经检查了这些合成的化合物对大肠杆菌和
金黄色葡萄球菌的体外抗菌活性。化合物24b对