Butanoic acid, 2-[(2,3-dichlorophenyl)methylene]-3-oxo-, 2-methoxy-2-phenylethyl ester, (S)- 、 propan-2-yl (Z)-4-acetyloxy-3-aminobut-2-enoate 在
propan-2-yl (Z)-4-acetyloxy-3-aminobut-2-enoate 作用下,
以82的产率得到5-O-(2-methoxy-2-phenylethyl) 3-O-propan-2-yl 2-(acetyloxymethyl)-4-(2,3-dichlorophenyl)-6-methyl-1,4-dihydropyridine-3,5-dicarboxylate