An efficient and flexible synthesis of 4-substituted ribose analogues is described. The key step involves the simple addition of a Grignard reagent to a ketone derived from a commercially available ribose. The addition of a range of Grignard reagents proceeded in high yield and with complete stereocontrol, to provide a single enantiomer in every case, the identity of which was confirmed by single-crystal
描述了 4 取代核糖类似物的有效和灵活的合成。关键步骤包括将格氏试剂简单地添加到衍生自市售核糖的酮中。添加一系列格氏试剂以高产率和完全立体控制进行,以在每种情况下提供单一对映异构体,其身份通过单晶 X 射线晶体学证实。这种添加不受起始核糖 2 位取代的影响。