The synthesis of dienone , which has previously been converted into the title compound in one step, is described. The methanoindene is transformed into dienone-alcohol in eighteen steps (12% overall yield). This was then hyaroxylated at C-8, using the known method, to afford key dienone .
The totalsynthesis of dl-coriolin has been accomplished via the key intermediate (5RS, 7SR) - 7 - t-butyldimethylsilyloxybicyclo[3.3.0]oct - 8 starting from 1,3 - cyclooctadiene.
A totalsynthesis of d1-coriolin has been accomplished starting from 1,3-cyclooctadiene, in which a rational and efficient introduction of various functional groups to the synthetic intermediate, 7-endo-t-butyldimethylsilyloxybicyclo[3.3.0]-oct-8-en-2-one, is involved.
The total synthesis of dl-coriolin has been achieved in a stereoselective way. The key tricyclic intermediate was synthesized fromdicyclopentadiene through a route which involved an SN2 reaction at a neopentylic position.
dl-coriolin的全合成已经以立体选择的方式实现。关键的三环中间体是由二环戊二烯通过一种途径进行的,该途径涉及新戊基位置处的S N 2反应。
A new synthesis of d1-coriolin A. Application of a new SN2 reaction at a neopentylic position
Dicyclopentadiene has been stereoselectively converted to a key tricyclic intermediate for the totalsynthesis of coriolin, through a route which involves a new SN2 reaction at a neopentylic position.
二环戊二烯已通过一种途径在新戊基位置上进行了新的S N 2反应,已被立体选择性地转化为关键三环中间体,从而实现了总的皮质醇的合成。