Enantioselective total synthesis of idesolide via NaHCO3-promoted dimerization
摘要:
The enantioselective total synthesis of idesolide has been accomplished in 20% overall yield from a known allylic alcohol by a nine-step sequence involving the Sharpless asymmetric epoxidation as the source of chirality and an efficient NaHCO3-promoted dimerization of the monomeric form of idesolide as the key transformation. (C) 2010 Elsevier Ltd. All rights reserved.
The first total synthesis of (−)-idesolide was achieved via organocatalytic, enantioselective oxidative kinetic resolution (OKR) using (1S,4S)-4-Bn-1-Bu-AZADOH- and AZADO-catalyzed dimerization of (S)-(−)-methyl 1-hydroxy-6-oxo-2-cyclohexenecarboxylate. The absoluteconfiguration of (−)-idesolide is determined to be 2R,2′S,3aS,7aR.