(4S,5R)-tert-butyl 4-carbamothioyl-2,2,5-trimethyloxazolidine-3-carboxylate 、
methyl 2-[2-bromopropionyl-5-methyl(thiazol-4-yl)]-5-methylthiazole-4-carboxylate 在
potassium hydrogencarbonate 、
吡啶 、
三氟乙酸酐 作用下,
以
乙二醇二甲醚 为溶剂,
反应 1.0h,
以69%的产率得到methyl 2-(2-{2-[2-(4S,5R)-(N-butoxycarbonyl-2,2,5-trimethyl(oxazolidin-4-yl)-5-methyl(thiazol-4-yl))-5-methyl(thiazol-4-yl)]}-5-methylthiazole)-4-carboxylate