Enantioselective synthesis of R-(−)-ligularenolide and the progesterone receptor ligand R-(−)-PF1092C starting from S-(+)-carvone
作者:Louis H.D. Jenniskens、Aede de Groot
DOI:10.1016/s0040-4020(98)00233-6
日期:1998.5
enantioselective synthesis of eremophilane sesquiterpenes was developed starting from S-(+)-carvone 3, using a conjugate addition-annelation sequence. The synthesis of R-(−)-ligularenolide 1 was accomplished in a staightforward manner with the annelation of the lactone as the last step. For the synthesis of the progesterone receptor ligand R-(−)-PF1092C 2 a different strategy was followed in which first the lactone
从S-(+)-香芹酮3开始,使用共轭加成-退火序列,开发了一种新的对映体选择性的全草胺倍半萜。R-(-)-叶烯醇内酯1的合成以固定的方式完成,最后一步是内酯的内环化。为了合成孕酮受体配体R-(-)-PF1092C 2,采用了不同的策略,其中首先将内酯退火。异丙烯基双键进入共轭位置的伴随异构化随后提供了另一种去除侧链的方法,同时为在C2,C3位置引入顺式β-二醇功能提供了理想的功能。