Synthesis of (±)-lahadinine B and (±)-11-methoxykopsilongine
摘要:
6,7-Dimethoxytryptamine 11 was converted into the homoannular diene 19 which underwent a Diels-Alder reaction with acryloyl chloride to give 20. Subsequent radical decarboxylation in the presence of (PhSe)(2) provided 22, which was converted into (+/-)-lahadinine B 1 and (+/-)-11-methoxykopsilongine 2, thus confirming their structures. (C) 2000 Elsevier Science Ltd. All rights reserved.