Synthesis of new 2<i>H</i>,4<i>H</i>-benzopyrano[3,4-<i>b</i>]yridine-1,3,5-trione derivatives<i>via</i>carbon suboxide
作者:Leonardo Bonsignore、Giuseppe Loy
DOI:10.1002/jhet.5570350122
日期:1998.1
The new 2H,4H-[1]benzopyrano[3,4-b]pyridine-1,3,5-trione derivatives 10a-f were prepared in the following three steps: first the preparation of new N-(tert-butoxycarbonyl)-3-amino-2H-1-benzopyran-2-one derivatives 5a-f by reaction of coumarin-3-carboxylic acids and diphenylphosphorylazide, then hydrolysis of 5a-f with gaseous hydrogen chloride to give the corresponding amines 7a-f, and finally the
新的2 ħ,4 ħ - [1]苯并吡喃并[3,4- b ]吡啶-1,3,5-三酮衍生物10A-F在以下三个步骤制备:新的第一制备ñ - (叔-通过香豆素-3-羧酸与二苯基磷酰叠氮化物的反应,然后将5a-f与气态氯化氢水解,得到相应的胺7a-(丁氧基羰基)-3-氨基-2 H -1-苯并吡喃-2-酮衍生物5a-f。f,最后在路易斯酸存在下,通过7a-f与亚氧化碳的反应制备10a-f。
An Efficient One-Pot Synthesis of Pyrido[2,3-<i>c</i>]coumarins via Serial Catalysis and Its Application in Concise Formal Synthesis of Santiagonamine
作者:San Kim、Young Taek Han
DOI:10.1021/acs.joc.3c01654
日期:2023.11.3
high-yielding one-pot synthesis of polysubstituted pyrido[2,3-c]coumarins from N-Boc-N-coumarinyl propargylamine derivatives was achieved via serial catalysis using AgSbF6. Using this approach, the concise formal synthesis of santiagonamine was successfully accomplished. This simple and versatile method could be used to increase the potential of the pyrido[2,3-c]coumarin scaffold for diverse synthetic and
使用AgSbF 6通过串联催化,从N -Boc- N-香豆素基炔丙胺衍生物中多功能、高产率地一锅合成多取代吡啶并[2,3- c ]香豆素。利用该方法,成功完成了圣地亚哥胺的简明形式合成。这种简单且通用的方法可用于增加吡啶并[2,3- c ]香豆素支架在各种合成和生物应用中的潜力。