96034-57-0Relevant articles and documents
DERIVATIZATION OF BETA-LACTAM ANTIBIOTICS AS CALIBRATORS/ISTD IN MASSSPEC MEASUREMENTS
-
Page/Page column 3; 37-38, (2021/05/21)
The invention relates to a complex comprising an antibiotic substance and a nucleophilic derivatization reagent, compositions comprising the complex, kits comprising complex or composition, as well as uses of the complex or composition.
A luer Ertapenem, luer he lateral chain and its preparation method
-
Paragraph 0123; 0124; 0125, (2017/07/14)
The invention discloses ertapenem and ertapenem side chains, as well as preparation methods of ertapenem and ertapenem side chains. L-hydroxyproline is protected by p-nitrobenzyl ester to obtain (2S,4R)-4-hydroxyl-1-(((4-Nitrobenzformyl)-oxyl)caboyl)pyrrolidine-2-carboxylic acid; then 4-nitro(1S,4S)-3-oxo-2-thia-5-azabicyclo[2.2.1]heptan-5-carboxylic anhydride can be obtained, and reacts with m-aminobenzoic acid p-nitrobenzyl ester to obtain ertapenem side chain III; and the ertapenem can be synthesized through two-step chemical reaction of condensation and deprotection to the ertapenem side chain III and a raw material MAP. An ertapenem side chain I (10), an ertapenem side chain II (13) and the ertapenem side chain III (2) which are prevailing in the market can be synthesized through simple steps, without the need of ultralow temperature, industrialization is easy, and the product purity is high, and the operation is simple and convenient.
AN IMPROVED PROCESS FOR THE PREPARATION OF MEROPENEM
-
Page/Page column 7-9, (2011/12/02)
The present invention provides an improved process for the preparation of methyl carbapenem derivative of formula (I) or its pharmaceutically acceptable salts or hydrates thereof in a pure form.