Hydropyrrolo[2,3-b]indole is a privileged indoline motif, while its analogue, hydropyrrolo[3,2-b]indole, has been much less explored. Herein, we developed a cascade reaction of oxindole-derived nitrones with allenoates, providing straightforward access to the tetracyclic hydropyrrolo[3,2-b]indole scaffolds. Formation of multiple C–C/C–X bonds and cleavage could be achieved within one synthetic step
Hydropyrrolo[2,3- b ]indole 是一种特殊的二氢吲哚基序,而其类似物 hydropyrrolo[3,2- b ]indole 则鲜为人知。在此,我们开发了羟吲哚衍生的硝酮与联烯酸酯的级联反应,提供了四环氢吡咯并 [3,2- b ] 吲哚支架的直接途径。多个 C-C/C-X 键的形成和裂解可以在温和条件下使用一种简单的催化剂 (Gimeracil) 在一个合成步骤中实现。反应途径可能涉及作为关键中间体的螺氢氮杂酮的产生。
Campbell, James B.; Davenport, Timothy W., Synthetic Communications, 1989, vol. 19, # 13-14, p. 2255 - 2264
作者:Campbell, James B.、Davenport, Timothy W.
DOI:——
日期:——
CAMPBELL, JAMES B. (JR);DAVENPORT, TIMOTHY W., SYNTH. COMMUN., 19,(1989) N3-14, C. 2255-2263