3,4,5,6,7-penta-O-acetyl-1,2-dideoxy-1-nitro-D-gluco-hept-1-enitol 、
(Z)-3-(3,4-Dimethoxy-benzylamino)-but-2-enoic acid ethyl ester 以
乙醇 为溶剂,
以30%的产率得到1-(3,4-Dimethoxy-benzyl)-2-methyl-4-((1S,2R,3R,4R)-1,2,3,4,5-pentaacetoxy-pentyl)-1H-pyrrole-3-carboxylic acid ethyl ester