(gammaR,2R,3S)-alpha-diazo-3-[(1R)-1-hydroxyethyl]-gamma-methyl-beta,4-dioxo-2-azetidinebutanoic acid (4-nitrophenyl)methyl ester

3-(2-Bromo-1-oxopropyl)-spiro[2H-1,3-benzoxazine-2,1'-cyclohexan]-4(3H)-one

BPSBC

BR-Comp

3-(2-bromopropanoyl)spiro[1,3-benzoxazine-2,1'-cyclohexan]-4(3H)-one

F-9

Meropenem Intermediates

Meropenem intermediates F–9

(3S,4R)-3-[(1R)-1-Hydroxyethyl]-4-[(1R)-1-methyl-3-diazo-3-(p-nitrobenzyloxycarbonyl)-2-oxopropyl]azetidin-2-one

F-9(Intermediate Of Meropenem)

(R)-4-Nitrobenzyl 2-diazo-4-((2R,3S)-3-((R)-1-hydroxyethyl)-4-oxoazetidin-2-yl)-3-oxopentanoate