Application of differential reactivity towards synthesis of lamellarin and 8-oxoprotoberberine derivatives: Study of photochemical properties of aryl-substituted benzofuran-8-oxoprotoberberines
作者:Sameer Vyasamudri、Ding-Yah Yang
DOI:10.1016/j.tet.2018.01.042
日期:2018.3
A unique differential reactivity between dihydroisoquinolines and 3-nitrocoumarins was observed and was exploited for the efficient construction of lamellarins and their isomeric benzofuran-8-oxoprotoberberine derivatives under acid-catalyzed or base-promoted conditions. Further, these prepared aryl-substituted benzofuran-8-oxoprotoberberine derivatives bearing electron-donating substituents on benzofuran
观察到二氢异喹啉和3-硝基香豆素之间的独特的差异反应性,并被用于在酸催化或碱促进的条件下有效构建薄片蛋白及其异构体苯并呋喃-8-氧代小ber碱衍生物。此外,发现这些制备的在苯并呋喃部分上带有给电子取代基的芳基取代的苯并呋喃-8-氧代小ber碱衍生物是台式稳定的,但对光敏感,当暴露于可见光下时可发生氧化性开环反应,得到相应的酮产物。在有氧条件下发光。