(4aS,7aR)-2,3,4,4a,5,6,7,7a-octahydropyrrolo[3,4-b][1,4]oxazine 、 tert-butyl (R)-6-(3-(4-formyl-2,2-dimethylpiperidin-1-yl)-5-methyl-1H-pyrazol-1-yl)-2-azaspiro[3.3]heptane-2-carboxylate 在
sodium cyanoborohydride 作用下,
以
甲醇 为溶剂,
生成 2-(trimethylsilyl)ethyl-(4aR*,7aS*)-4-(((R)1-(1-(2-(tert-butoxycarbonyl)-2-azaspiro[3.3]heptan-6-yl)-5-methyl-1H-pyrazol-3-yl)-2,2-dimethylpiperidin-4-yl)methyl)hexahydrofuro[3,4-b]pyrazine-1(2H)-carboxylate