(2R,3S,4R)-2-(tert-Butyl-diphenyl-silanyloxy)-3-hydroxy-5-(4-methoxy-benzyloxy)-4-methyl-pentanoic acid tert-butyl ester 在
2,3-二氯-5,6-二氰基-1,4-苯醌 作用下,
以
二氯甲烷 为溶剂,
以93%的产率得到(R)-(tert-Butyl-diphenyl-silanyloxy)-[(4S,5R)-2-(4-methoxy-phenyl)-5-methyl-[1,3]dioxan-4-yl]-acetic acid tert-butyl ester