Carbodiimides in the Synthesis of Enamino- and α-Aminophosphonates as Peptidomimetics of Analgesic/Antiinflammatory and Anticancer Agents
作者:Wafaa M. Abdou、Reham F. Barghash、Mohamed S. Bekheit
DOI:10.1002/ardp.201200142
日期:2012.11
powder, quite stable for a few days in a desiccator. When a protonating agent was present in the reaction medium, the reaction was markedly accelerated leading to the formation of the phosphamides. Next, some saturated and unsaturated Horner–Emmons reagents were applied in situ to the same carbodiimide to obtain more phosphorylated N‐heterocycles. The analgesic and antiinflammatory activities of the newly
由亚氨基正膦与异氰酸苯酯的缩合反应生成的碳二亚胺可以与不同的磷亲核试剂反应。因此,在四氢呋喃 (THF)/FeCl3/H2O 系统中,原位产生的杂枯草烯与二烷基磷酸氢盐反应,得到稠合吡咯 (≈14%) 和嘧啶膦酸盐 (≈57%)。另一方面,使用三(二烷基)氨基膦,反应得到相应的六烷基次膦酸二酰胺,为水敏性细粉,在干燥器中可稳定几天。当反应介质中存在质子化剂时,反应显着加速,导致形成磷酰胺。接下来,将一些饱和和不饱和的霍纳-埃蒙斯试剂原位应用于相同的碳二亚胺以获得更多磷酸化的 N-杂环。研究了新合成化合物的镇痛和抗炎活性,并显示出显着的活性。最后,我们进一步估计了五种新膦酸盐对四种癌细胞系的抗肿瘤活性。