三氟甲磺酸己酯 、
1-[(3aR,6S,6aR)-3,3-dimethyl-5-(4-methylphenyl)sulfonyl-6-propan-2-yl-3a,4,6,6a-tetrahydropyrrolo[3,4-c][1,2]oxazol-1-yl]propan-1-one 在
双(三甲基硅烷基)氨基钾 作用下,
以92%的产率得到(2R)-1-[(3aR,6S,6aR)-3,3-dimethyl-5-(4-methylphenyl)sulfonyl-6-propan-2-yl-3a,4,6,6a-tetrahydropyrrolo[3,4-c][1,2]oxazol-1-yl]-2-methyloctan-1-one