Abstract

The stereocontrolled synthesis of the C 1–C 8 portion, the ester side chain of the HIV-1 protease inhibitive didemnaketals from the ascidian Didemnum sp., has been carried out through 15 steps starting from ( S)-carvone as the chiral template. This approach involved the diastereoselective construction of three conjoint chiral centers by intramolecular chiral inducement, and generation of allylic alcohol intermediate through a key Grob fragmentation reaction.

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