syn-1,5-diol stereodivergently, which have been converted by aminocyclization into trans- and cis-2,6-disubstituted piperidines (trans- and cis-12), respectively. The first total synthesis of (+)-9-epi-6-epipinidinol (2) and (−)-pinidinol (3) has been achieved from trans- and cis-12.
从
1,6-庚二烯开始,两个AD反应以逐步方式逐步生成抗-1,5
-二醇和syn -1,5
-二醇立体异构体,它们已通过
氨基环化反应转化为反式-和顺式-2,6二取代的
哌啶(反式-和顺- 12),分别。9表- 6- epipinidinol( - (+)的第一个全合成2)和( - ) - pinidinol(3)已经从实现反式和-顺式- 12。