The precise and stereocontrolled synthesis of the C9–C23 portion, the key mother spiroketal of the HIV-1 protease inhibitive didemnaketals from the ascidian Didemnum sp., has been carried out through multisteps starting from (R)-pulegone as the chiral template. This approach involved the distereoselective construction of eight chiral centers by intramolecular chiral inducement and the coupling of two
C 9 – C 23部分的精确和立体控制的合成是由海鞘Didemnum sp。产生的HIV-1
蛋白酶抑制性双锁酮的关键母亲螺环,已通过多个步骤进行了从(R)-pulegone作为手性模板的步骤。该方法涉及通过分子内手性诱导的8个手性中心的立体选择性构建和通过Julia反应的两个片段的偶联。