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一：
标题：Preparation of gram-positive carbapenem antibacterials.
地址：PCT Int. Appl., 2005123069, 29 Dec 2005
二：
标题：preparation and stability of crystalline salts of a carbapenem antibiotic.
地址：PCT Int. Appl., 2000032607, 08 Jun 2000
三
标题：Process for producing 2-carbon-substituted carbapenem derivatives
地址：Eur. Pat. Appl., 430037, 05 Jun 1991
四
标题：Preparation of (1S,3R,6S)-6-[(1R)-1-hydroxyethyl]-2-carbamoyloxymethyl-1-alkyl-1-carbapen-2-em-3-carboxylic acids and their derivatives as antibacterial drugs.
地址：Belg., 905784, 16 Mar 1987
五
标题：Carbapenems and 1-methylcarbapenems having an externally alkylated mono- or bicyclic 2-quaternary heteroarylalkyl substituent.
地址：Eur. Pat. Appl., 184843, 18 Jun 1986
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