Synthesis of pyrimido[2,1-<i>a</i>]isoindolone and isoindolo[2,1-<i>a</i>]quinazolinone <i>via</i> intramolecular aza-Prins type reaction
作者:Subhamoy Biswas、Bikoshita Porashar、Pallav Jyoti Arandhara、Anil K. Saikia
DOI:10.1039/d1cc04554g
日期:——
A novel aza-Prins type cyclizationreaction involving N-acyliminium ions and amides is reported for the synthesis of tetrahydropyrimido[2,1-a]isoindole-2,6-dione and 6,6a-dihydroisoindolo[2,1-a]quinazoline-5,11-dione derivatives in excellent yields. The strategy features inexpensive reagents, mild reaction conditions, and metal-free synthesis of N-heterocyclic frameworks. Further, post-synthetic modification
涉及一种新颖氮杂普林斯型环化反应Ñ -acyliminium离子和酰胺被报告四氢嘧啶并[2,1-的合成一个]异吲哚-2,6-二酮和6,6-一个-dihydroisoindolo [2,1-一个]喹唑啉-5,11-二酮衍生物,产率极好。该策略的特点是试剂价格低廉,反应条件温和,N-杂环骨架的无金属合成。此外,合成后的修饰导致其前所未有的三唑、四环二氮杂环戊二烯[ def ]菲-1,4(9 a 1 H )-二酮和羰基衍生物的形成。
Tuberculosis (TB), which is caused by Mycobacterium tuberculosis (Mtb), is a major worldwide threat to public health. Mycobacterium protein tyrosine phosphatase B (mPTPB) is a virulent phosphatase secreted by Mtb, which is essential for the survival and persistence of the bacterium in the host. Consequently, small‐molecule inhibitors of mPTPB are expected to serve as anti‐TBagents with a novel mode of action