乙酸叔丁酯锂烯醇化物 、 (2S,3S,5R)-5-(3-Benzyl-5-methyl-2,4-dioxo-3,4-dihydro-2H-pyrimidin-1-yl)-3-benzyloxy-tetrahydro-furan-2-carbaldehyde 以
四氢呋喃 为溶剂,
生成 (R)-3-[(2R,3S,5R)-5-(3-Benzyl-5-methyl-2,4-dioxo-3,4-dihydro-2H-pyrimidin-1-yl)-3-benzyloxy-tetrahydro-furan-2-yl]-3-hydroxy-propionic acid tert-butyl ester 、
(S)-3-[(2R,3S,5R)-5-(3-Benzyl-5-methyl-2,4-dioxo-3,4-dihydro-2H-pyrimidin-1-yl)-3-benzyloxy-tetrahydro-furan-2-yl]-3-hydroxy-propionic acid tert-butyl ester