作者:Mertsalov, Dmitriy F.、Shchevnikov, Dmitriy M.、Lovtsevich, Lala V.、Novikov, Roman A.、Khrustalev, Victor N.、Grigoriev, Mikhail S.、Romanycheva, Anna A.、Shetnev, Anton A.、Bychkova, Olga P.、Trenin, Alexey S.、Zaytsev, Vladimir P.
DOI:10.1039/d4nj01174k
日期:——
sequence involves two consecutive steps: the nucleophilic addition reaction and the intramolecular Diels–Alder furane (IMDAF) reaction. The scope and limitations of the proposed method were thoroughly investigated, and it was revealed that the key [4+2] cycloaddition step proceeds through an exo-transition state, giving rise to the exclusive formation of a single diastereomer of the target heterocycle
N-糠基烯丙胺与多种异氰酸酯、异硫氰酸酯、异硒氰酸酯反应,在一个合成阶段形成 3a,6-环氧异吲哚核心。相互作用序列涉及两个连续的步骤:亲核加成反应和分子内狄尔斯-阿尔德呋喃(IMDAF)反应。对所提出方法的范围和局限性进行了彻底研究,结果表明关键的[4+2]环加成步骤通过外过渡态进行,导致目标杂环的单一非对映异构体的排他性形成。动态温度 NMR 分析可以全面研究 NMR 信号聚结的情况,并确定 O → Se 转变过程中的聚结温度。鉴定了所获得的化合物对酵母白色念珠菌、真菌黑曲霉和细菌(包括金黄色葡萄球菌、藤黄微球菌、荧光假单胞菌)敏感菌株的抗菌特性。