| 摘要 |
Title compds. (Id; R6 = (protected) amino; R2 = H, halogen, carboxy; R3 = H, lower alkyl; R4a = H, halogen, lower alkyl, -O-R7; R7 = lower alkyl; R5 = carboxy) were prepd. by the reaction of VI(R1b = haloacetyl) with VII. Thus, 2.6 ml 7-(2-(2-amino-4-thiazolyl)-2-methoxyiminoacetamido≉-3-cephem-4-carboxylic hydrochloride and stirred at room temp to give 7-≮2-(2-amino-4-thiazolyl)-2-methoxyaminoacetamido≉-3-cephem-4-carboxylate.
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