(3S,4S)-4-hydroxy-4-{4-(2-methoxy-ethoxymethyl)-2-[2-(toluene-4-sulfonyloxy)-ethyl]-phenyl}-3-[4-(3-methoxy-propyl)-3,4-dihydro-2H-benzo[1,4]oxazin-6-ylmethoxy]-piperidine-1-carboxylic acid tert-butyl ester 在
sodium hydride 作用下,
以
N,N-二甲基甲酰胺 为溶剂,
反应 0.33h,
生成
tert-butyl (1S,3'S)-6-(3-methoxypropoxy)-3'-{[4-(3-methoxypropyl)-3,4-dihydro-2H-1,4-benzoxazin-6-yl]methoxy}-3,4-dihydro-1'H-spiro[isochromene-1,4'-piperidine]-1'-carboxylate