The invention relates to the preparation of homochiral thiolactones which have application in the synthesis of 3′- and 4′- thionucleosides. Substituents on the thiolactone can be used to influence the configuration of the C-1′ position in the final nucleoside. Configuration at the C-4′ position is controlled by use of the appropriate homochiral glycidol as starting material in the synthesis of the thiolactone. This process also offers the possibility of introducing substituents diastereoselectively in the C-2′ and C-3′ positions.
本发明涉及同手性
硫代内酯的制备,它可应用于 3′-和 4′-
硫代核苷的合成。
硫内酯上的取代基可用来影响最终核苷中 C-1′ 位的构型。在合成
硫代内酯的过程中,使用适当的同手性
缩水甘油作为起始原料,可以控制 C-4′ 位的构型。这一过程还提供了在 C-2′ 和 C-3′ 位非对映选择性引入取代基的可能性。