6-Benzyl-8-ethoxycarbonylmethyl-1-methyl-3-((E)-2-nitro-vinyl)-1,6,7,8-tetrahydro-9-oxa-1,6-diaza-cyclopenta[a]naphthalene-2-carboxylic acid ethyl ester 在
sodium tetrahydroborate 、
silica gel 作用下,
以
氯仿 、
异丙醇 为溶剂,
反应 4.0h,
以79%的产率得到6-Benzyl-8-ethoxycarbonylmethyl-1-methyl-3-(2-nitro-ethyl)-1,6,7,8-tetrahydro-9-oxa-1,6-diaza-cyclopenta[a]naphthalene-2-carboxylic acid ethyl ester