Application of a Stereoselective Rhodium(II)-Catalyzed Oxonium Ylide Formation–[2,3]-Sigmatropic Rearrangement of an α-Diazo-β-keto Ester to the Synthesis of 2-epi-Cinatrin C1 Dimethyl Ester
摘要:
The Rh-2(OAc)(4)-catalyzed oxonium ylide formation-[2,3]-sigmatropic rearrangement of a highly functionalized alpha-diazo-beta-keto ester derived from D-glucose proceeded stereoselectively to give the corresponding tetrahydrofuran-3-one as a single diastereomer in high yield. This reaction was applied to the synthesis of 2-epi-cinatrin C-1 dimethyl ester as a key step.
Application of a Stereoselective Rhodium(II)-Catalyzed Oxonium Ylide Formation–[2,3]-Sigmatropic Rearrangement of an α-Diazo-β-keto Ester to the Synthesis of 2-epi-Cinatrin C1 Dimethyl Ester
摘要:
The Rh-2(OAc)(4)-catalyzed oxonium ylide formation-[2,3]-sigmatropic rearrangement of a highly functionalized alpha-diazo-beta-keto ester derived from D-glucose proceeded stereoselectively to give the corresponding tetrahydrofuran-3-one as a single diastereomer in high yield. This reaction was applied to the synthesis of 2-epi-cinatrin C-1 dimethyl ester as a key step.