Synthesis of an Advanced Intermediate for (+)-Pillaromycinone.

[摘要]：Condensation of an orsellinate anion with a 2-cyclohexenone (Staunton-Weinreb annulation) afforded a linear tetracycle which was converted to a protected deriv. of 12a-epipillaromycinone. Methodol. for introducing a 12a-hydroxyl substituent into the tetracycle with correct (R) configuration is described.

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