(4-methoxyphenyl)methyl (6R)-3-(chloromethyl)-7-[[(2Z)-2-methoxyimino-2-[2-(tritylamino)-1,3-thiazol-4-yl]acetyl]amino]-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylate → (4-methoxyphenyl)methyl (6R)-7-[[(2Z)-2-methoxyimino-2-[2-(tritylamino)-1,3-thiazol-4-yl]acetyl]amino]-8-oxo-3-([1,3]thiazolo[4,5-b]pyridin-2-ylsulfanylmethyl)-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylate

Participants

Reaction Steps

Using 111 mg of 2-mercaptothiazolo[4,5-b]pyridine in place of 2-mercaptothiazolo[4,5-c]pyridine and 477 mg of p-methoxybenzyl 7-{(Z)-2-(2-tritylaminothiazol-4-yl)-2-methoxyiminoacetamido}-3-chloromethyl-3-cephem-4-carboxylate, the reaction and purification were carried out in the same manner as in Example 1(a) to obtain 345 mg of the title compound in a yield of 62%.

Provenance & Evidence