A Rapid Synthesis of Hydroxymethylacylfulvene (HMAF) Using the Allenic Pauson−Khand Reaction. A Synthetic Approach to Either Enantiomer of This Illudane Structure
作者:Kay M. Brummond、Jianliang Lu、Jeffrey Petersen
DOI:10.1021/ja000546l
日期:2000.5.1
An allenic Pauson−Khand reaction has been employed in the preparation of (±)-hydroxymethylacylfulvene (HMAF), an anticancer agent that is currently in Phase II clinical trials for a variety of solid tumor types. The synthesis is effected in 11 steps from commercially available starting materials. In addition, an asymmetric route to the title compound has been established by intersecting the racemic
丙氨酸 Pauson-Khand 反应已用于制备 (±)-羟甲基酰基富烯 (HMAF),这是一种抗癌剂,目前正处于针对多种实体瘤类型的 II 期临床试验中。由市售起始材料分 11 个步骤进行合成。此外,通过将外消旋合成与对映体纯中间体交叉,建立了获得标题化合物的不对称途径。对映异构纯中间体的制备涉及烯炔系统的三取代烯烃的 Sharpless 不对称二羟基化 (AD)。这种方法只需通过改变 Sharpless AD 反应中的配体即可获得 HMAF 的两种对映异构体。报告了使用 Peterson 烯化或 Horner-Wadsworth-Emmons 协议从脂肪族酮立体有择合成 E 或 Z 三取代烯炔的优化条件。最后,更好地理解等离子 P−K r 的立体电子要求...