苯稠杂环 H 喹啉 异唑啉 引哚 quinoline isoquinoline indole 吖啶 acridine ★命名 CH3 3-甲基-2-溴噻吩 Br (B-甲基-0-溴塞吩)N N N H N 1 2 3 5 4 6 7 8 1 2 3 5 4 6 7 8 1 2 4 3 5 6 7 quinoline isoquinoline indole acridine β α S CH3 Br 3- -2- β- -α-