上游原料
tert-butyl 4-hydroxy-1-piperidinecarboxylate8-amino-2,3-dihydro-1,4-benzodioxine-5-carboxylic acidethyl 8-amino-2,3-dihydro-1,4-benzodioxine-5-carboxylateethyl 8-amino-7-chloro-2,3-dihydro-1,4-benzodioxine-5-carboxylate8-amino-7-chloro-2,3-dihydro-1,4-benzodioxine-5-carbohydrazidebenzyl 6-chloro-8-(5-oxo-4,5-dihydro-1,3,4-oxadiazol-2-yl)-2,3-dihydro-1,4-benzodioxin-5-ylcarbamatetert-butyl 4-[5-(8-{[(benzyloxy)carbonyl]amino}-7-chloro-2,3-dihydro-1,4-benzodioxin-5-yl)-2-oxo-1,3,4-oxadiazol-3(2H)-yl]-1-piperidinecarboxylatebenzyl 6-chloro-8-[5-oxo-4-(4-piperidinyl)-4,5-dihydro-1,3,4-oxadiazol-2-yl]-2,3-dihydro-1,4-benzodioxin-5-ylcarbamate1-(2-bromoethyl)benzene；1-Bromo-2-phenylethane;(2-Bromoethyl)benzene;Phenethyl bromidebenzyl 6-chloro-8-[5-oxo-4-(4-piperidinyl)-4,5-dihydro-1,3,4-oxadiazol-2-yl]-2,3-dihydro-1,4-benzodioxin-5-ylcarbamatebenzyl 6-chloro-8-[5-oxo-4-(1-phenethyl-4-piperidinyl)-4,5-dihydro-1,3,4-oxadiazol-2-yl]-2,3-dihydro-1,4-benzodioxin-5-ylcarbamate
