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 regioselectiveDiels‐Alderreaction 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 regioselectiveDiels‐Alderreaction. The chemistry was used to synthesize novel 8‐pyrimidinyloxy‐2,5,6,11,12,13‐hexahydro 4H