The absolute configuration of 6,8-dioxabicyclo[3.2.1]octane and several methyl substituted derivatives
作者:N. Ibrahim、T. Eggimann、E.A. Dixon、H. Wieser
DOI:10.1016/s0040-4020(01)81959-1
日期:1990.1
enantiomers of 6,8-dioxabicyclo[3.2.1]octane and the alkyl substituted derivatives, exo- and endo-7-methyl, exo- and endo-5,7-dimethyl, 7,7-dimethyl, and exo- and endo-7-ethyl-5-methyl (exo- and endo-brevicomin), were synthesized stereoselectively with known configuration by standard synthetic methods, or with baker's yeast, or both. The correlation between the absolute configuration of the bicyclic rings and
6,8-二氧杂双环[3.2.1]辛烷的对映异构体和烷基取代的衍生物,exo-和内部-7-甲基,exo-和内部-5,7-二甲基,7,7-二甲基和exo-和内-7-乙基-5-甲基(外-和内-brevicomin),通过已知的构型,通过标准合成方法,或与面包酵母,或两者,立体选择性地合成。通过手性络合气相色谱法建立了两个分子的双环绝对构型与旋光性之间的相关性,此前尚不知道这种相关性。在所有情况下,(1R)对映异构体均显示正旋转。建立了始终以高光学纯度生产的酵母产品的绝对构型。