作者:Marja Lajunen、Ari Koskinen
DOI:10.1039/a909471g
日期:——
Two routes were evaluated for the preparation of multiply functionalized cyclohexane derivatives in a stereocontrolled fashion from readily available HajosâParrish ketone 1. Reduction (catalytic or dissolving metal) led to the cis-isomer 8, in stark contrast to previous literature. Finally, modification of earlier steroid chemistry allowed the synthesis of the trans-isomer 14. The latter is a useful intermediate for the synthesis of 7-deoxytaxol derivatives.
我们评估了以现成的 HajosâParrish 酮 1 为原料,以立体可控方式制备多重官能化环己烷衍生物的两种途径。通过还原(催化或溶解金属)得到了顺式异构体 8,这与之前的文献形成了鲜明对比。最后,通过对早期类固醇化学的修改,合成了反式异构体 14。后者是合成 7-脱氧紫杉醇衍生物的有用中间体。