PROCESS FOR PRODUCING /3S/-3-SQUARE BRACKET OPENED-FIGURE BRACKET OPENED-/2-AMINO-4-THIAZOLYL/-/1-CARBOXY-1-METHYL-ETOXY-IMINO/-ACETYL-FIGURE BRACKET CLOSED-AMINO-SQUARE BRACKET CLOSED-4-ALKYL-2-OXO-1-AZETIDINYL-SULFONIC ACID

摘要

A process for preparing (3S)-3-[[(2-amino-4-thiazoyl)](1-carboxy-1-methyloxy)imino]acetyl]amino]-2-oxo-1 -azetidinesulfonic acid and 4-substituted derivatives thereof.