ethyl 2-[(acetyloxy)((5R)-6-bromo-2-{[(4-nitrobenzyl)oxy]carbonyl}-7-oxo-4-thia-1-azabicyclo[3.2.0]hept-2-en-6-yl)methyl]-8,9-dihydropyrido[3,4-e][1,2,4]triazolo[1,5-a]pyrimidine-7(6H)-carboxylate 在
palladium 10% on activated carbon
氢气 作用下,
以
四氢呋喃 、
乙腈 为溶剂,
以2%的产率得到(5R,6Z)-6-{([7-(ethoxycarbonyl)-6,7,8,9-tetrahydropyrido[3,4-e][1,2,4]triazolo[1,5-a]pyrimidin-2-ylmethylene])}-7-oxo-4-thia-1-azabicyclo[3.2.0]hept-2-ene-2-carboxylic acid