isocyanatomalonate diester with an aldehyde in the presence of a thiourea catalyst. The resulting chiral 4-carboxyl oxazolidinones are the equivalent of β-hydroxy-α-amino acids bearing a tri- or tetrasubstituted carbon center at their α position. With this in mind, this procedure was successfully applied to the first total synthesis of mycestericin C, which was completed in 12 steps and represents one of the shortest
在
硫脲催化剂的存在下,已开发出一种通过异
氰酸基
丙二酸酯二酯与醛的催化不对称醛醇缩合反应合成手性4-羧基
恶唑烷酮的新方法。所得的手性4-羧基
恶唑烷
酮类相当于在其α位带有三或四取代碳中心的β-羟基-
α-氨基酸。考虑到这一点,该方法成功地应用于了Mycestericin C的第一次全合成,该合成过程分12个步骤完成,代表了构建此类
天然产物的最短报道序列之一。