[Structure: see text] The morphinan skeleton was effectively synthesized by an intramolecular Mannich-type reaction. Further transformation led to totalsynthesis of morphine.
[结构:见正文]通过分子内曼尼希型反应有效地合成了吗啡喃骨架。进一步的转化导致吗啡的完全合成。
Hong, Chang Y.; Kado, Noriyuki; Overman, Larry E., Journal of the American Chemical Society, 1993, vol. 115, # 23, p. 11028 - 11029
作者:Hong, Chang Y.、Kado, Noriyuki、Overman, Larry E.
DOI:——
日期:——
Intramolecular Heck cyclization to the galanthamine-type alkaloids: total synthesis of (±)-lycoramine
A novel approach towards the construction of the galanthamine skeleton was demonstrated by the total synthesis of (±)-lycoramine. The key steps include a Pd-catalyzed intramolecular cyclization to form the seven-membered azepane ring and a spontaneous intramolecular Michael addition to afford the five-membered furan ring. This synthetic route has also been demonstrated to be useful for the preparation