2,12-Dioxo-7-hydroxymethyl-9-phenyl-1-aza-5,8,11-trioxotetracyclo{8 9.2.0.0{hu 6,13{b 0.{hu 6.9{b {9 tridecane

摘要

Compounds of the formula <IMAGE> wherein R is methyl, ethyl, trifluoromethyl, methoxy, ethoxy, nitro, hydrogen or halogen, and X is hydroxy or hydrogen, ARE USEFUL AS beta -LACTAMASE INHIBITORS.