Etude de l'epoxydation du trialkylsiloxymethyl-14 trimethyl-4,8,10 pendecatriene-4,8,12oate demethyle en tetramethyl-5,9,11,15 triepoxy-5,6:9,10:13,14 oxacyclohexadeccanone- 2 suvie de cyclisation en [dihydroxy-1''',3'''methyl-2''' 丙基]-5'' perhydrotrimethyl-5,5',3'' terfuranne-2:2',5': 2'' 1-5。C9-C23 片段 C9-C23 莫能 B 合成练习曲
Synthesis of Optically Active α-Methyl β-Hydroperoxy Esters by Diastereoselective Singlet Oxygen Ene Reaction and Horseradish Peroxidase Catalyzed Kinetic Resolution
作者:Waldemar Adam、Chantu R. Saha-Möller、Oliver Weichold
DOI:10.1007/s007060070098
日期:2000.6.15
Optically active diastereomeric β-hydroperoxy esters 4 have been prepared by singletoxygenenereaction of β,γ-unsaturated esters 3 and subsequent horseradish peroxidase (HRP) catalyzed kinetic resolution of the eneproduct. The highest enantiomeric excess (up to 95%) has been obtained for the isopropyl ester threo - 4c , which establishes that the size of the remote ester functionality exercises