[reaction: see text] Aphidicolin unnatural derivative (2) was synthesized using a new tandem transannular Diels-Alder/aldol methodology. The 8-epi-aphidicolane skeleton is constructed in a highly diastereoselective manner and converted into (11R)-(-)-8-epi-11-hydroxyaphidicolin (2). An efficient method for the difficult C16 funtionalization is presented.
[反应:见正文]使用新的串联跨环形Diels-Alder / aldol方法合成了Aphidicolin非天然衍
生物(2)。以高度非对映选择性的方式构建8-表观双环烷骨架,并将其转化为(11R)-(-)-8-表-11-羟基两环素(2)。提出了一种用于困难的C16功能化的有效方法。