上游原料
3-Bromo-1-propene; 3-Bromopropene；allyl bromide2-[[2-(tert-butoxy)-1,1-dimethyl-2-oxoethoxy]imino]-2-[2-(tritylamino)-1,3-thiazol-4-yl]acetic acidtert-butyl 7-amino-3-(bromomethyl)-5,8-dioxo-5lambda(4)-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylatetert-butyl 3-(bromomethyl)-7-([2-[[2-(tert-butoxy)-1,1-dimethyl-2-oxoethoxy]imino]-2-[2-(tritylamino)-1,3-thiazol-4-yl]acetyl]amino)-5,8-dioxo-5lambda(4)-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylate1-allyl-2(1H)-pyridinethione1-allyl-2-([[2-(tert-butoxycarbonyl)-7-([2-[[2-(tert-butoxy)-1,1-dimethyl-2-oxoethoxy]imino]-2-[2-(tritylamino)-1,3-thiazol-4-yl]acetyl]amino)-5,8-dioxo-5lambda(4)-thia-1-azabicyclo[4.2.0]oct-2-en-3-yl]methyl]sulfanyl)pyridinium bromide2-Bromopyridine；α-bromopyridine;α-bromoazine1-allyl-2-bromopyridinium bromide
