SYNTHESIS OF CYCLOPENTENE-FUSED PYRROLOISOQUINOLINONE DERIVATIVE VIA<i>N</i>-ACYLIMINIUM ION CYCLIZATION
作者:Dong Jin Hwang、Soo Sung Kang、Jae Yeol Lee、Jung Hoon Choi、Hokoon Park、Yong Sup Lee
DOI:10.1081/scc-120003411
日期:2002.1
pyrrolo[2,1-a]isoquinolinone derivative 7 was prepared. C-4 Hydroxylated 5-ethoxylactam 1b gave 4,5-epoxylactam 2 in high yield instead of isoquinoline derivative 3b under the N-acyliminium ion cyclization condition. The 4,5-epoxylactam 2 was converted to another N-acyliminium ion precursor 6 through base-promotedepoxide ring opening, silylation, and thermal Diels–Alder reaction with cyclopentadiene in