An efficient preparation of the title diols has been achieved by hydride reduction of diketone 2, for which a new, convenient synthesis is described. The diols were separated by chromatography, and their configurations were assigned by NMR analysis of derivatives and confirmed by X-ray analysis of the trans diol.
An efficient preparation of the title diols has been achieved by hydride reduction of diketone 2, for which a new, convenient synthesis is described. The diols were separated by chromatography, and their configurations were assigned by NMR analysis of derivatives and confirmed by X-ray analysis of the trans diol.