Silyl nitronates and nitrile oxides in organic synthesis. A novel route to d,l-deoxysugars. Use of aluminum oxide as solid phase base for generation of
作者:K.B.G. Torssell、A.C. Hazell、R.G. Hazell
DOI:10.1016/s0040-4020(01)91358-4
日期:1985.1
to a diene. 2. Stereospecific hydroxylation of the double bond. 3. Unmasking of the aldol moiety by catalytic reduction of the 2-isoxazoline. The syntheses of D,L-deoxyribose, D,L-oleose, D,L-digitoxose, D,L-2-deoxygalactose, 1,3-dideoxyfructose, 3-deoxyfructose etc. are described. Basic aluminum oxide is introduced as a solid phase base for the one step synthesis of 2-isoxazolines from aldoximes and
为脱氧醛糖和脱氧酮糖的三步合成开发了新的方法:1.选择性地将亚硝酸甲硅烷基酯或氧化亚氮区域选择性地加成到二烯中。2.双键的立体特异性羟基化。3.通过催化还原2-异恶唑啉使醛醇部分不掩盖。描述了D,L-脱氧核糖,D,L-油糖,D,L-指氧糖,D,L-2-脱氧半乳糖,1,3-二脱氧果糖,3-脱氧果糖的合成。引入碱性氧化铝作为固相碱,用于由醛肟和烯烃一步合成2-异恶唑啉。化合物的X射线衍射研究验证了立体化学分配。