Stereoselective dihydroxylation of 2-alkyl- and 2,4-dialkyl-2-amido-3-cyclohexen-1-ones. Synthesis of enantiomerically related 2-alkyl- and 2,4-dialkyl-3-hydroxy-1- oxocyclohexan-2,4-carbolactones by complementary buturolactonization reactions
摘要:
Stereoselective dihydroxylation of 2a-2f gives <(cis)under bar>-diols 3a-3f, from which hydroxylactones 5a-5f are obtained by an acid-catalyzed process involving retro aldol-realdolization prior to transesterification. (C) 1998 Elsevier Science Ltd. All rights reserved.