Regioselective synthesis of 2-methyl-2,5,6,11,12,13-hexahydro 4H indazolo[5,4-a]pyrrolo[3,4-c]carbazole-4-ones
作者:Ming Tao、Chung Ho Park、Kurt Josef、Robert L. Hudkins
DOI:10.1002/jhet.200
日期:2009.11
13‐hexahydro 4H indazolo[5,4‐a]pyrrolo[3,4‐c]carbazole‐4‐one was synthesized utilizing a regioselective Diels‐Alder reaction with 5‐(1H‐indol‐2‐yl)‐2‐methyl‐6,7‐dihydro‐2H‐indazole and ethyl cis‐β‐cyanoacrylate. Acetic acid and YtBr3 were the best solvent and catalyst for the regioselective Diels‐Alder reaction. The chemistry was used to synthesize novel 8‐pyrimidinyloxy‐2,5,6,11,12,13‐hexahydro 4H
2-甲基-2-5,6,11,12,13-六氢4H吲哚并[5,4-a]吡咯并[3,4-c]咔唑-4-酮是利用区域选择性Diels-Alder反应与5合成的-(1H-吲哚-2-基)-2-甲基-6,7-二氢-2H-吲唑和顺式-β-氰基丙烯酸乙酯。乙酸和YtBr 3是区域选择性Diels-Alder反应的最佳溶剂和催化剂。该化学方法用于合成新型8-嘧啶氧基-2,5,6,11,12,13-六氢4H吲哚并[5,4-a]吡咯并[3,4-c]咔唑-4-。被发现是DLK的有效抑制剂。J.杂环化学,(2009)。