for the following products
(4R,5S,6S)-3-(diphenyloxy)phosphoryloxy-6[(1R)-1-hydroxyethyl]-4-methyl-7-oxo-1-azabiycclo[3,2,0]hept-2-ene-2-carboxylate | 4-Nitrobenzyl (1R,5R,6S)-6-[(1R)-1-hydroxyethyl]-2-[(diphenylphosphono)oxy]-1-methylcarbapen-2-em-3-carboxylate | beta-Methyl vinyl phosphate | [4R-[4a, 5b,6b(R*)]]-3-[(Diphenoxyphosphinyl)oxy]-6-(1-hydroxyethyl)-4-methyl-7- oxo-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylic ac and (4-Nitrophenyl)methyl (4R,5R,6S)-3-[(diphenoxyphosphoryl)oxy]-6-[(1R)-1-hydroxyethyl]-4-methyl-7-oxo-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylate
