tert-butyl (2S,4S)-4-[(6-bromo-1-oxo-1,2-dihydroisoquinolin-4-yl)sulfanyI]-2-({[tert-butyl(diphenyl)silyl]oxy}methyl)piperidine-1-carboxylate 、
3-((tert-butyldimethylsilyl)oxy)-2,2-dimethylpropyl methanesulfonate 以to afford crude tert-butyl (2S,4S)-4-{[6-bromo-2-(3-{[tert-butyl(dimethyl)silyl]oxy}-2,2-dimethylpropyl)-1-oxo-1,2-dihydroisoquinolin-4-yl]sulfanyl}-2-({[tert-butyl(diphenyl)silyl]oxy}methyl)piperidine-1-carboxylate (0.87 g) as a colourless oil的产率得到tert-butyl (2S,4S)-4-{[6-bromo-2-(3-{[tert-butyl(dimethyl)silyl]oxy}-2,2-dimethylpropyl)-1-oxo-1,2-dihydroisoquinolin-4-yl]sulfanyl}-2-({[tert-butyl(diphenyl)silyl]oxy}methyl)piperidine-1-carboxylate