The present invention relates to a novel process for the preparation of 1ß-methylcarbapenem antibiotic, Ertapenem of formula I. The process comprises isolation of monoprotected Ertapenem acid or its monosodium salt and further deprotection to obtain Ertapenenm monosodium.
The present invention relates to a novel cost effective and commercially viable process for the preparation of pure crystalline Imipenem monohydrate by dissolving crude imipenem in carbonated water and morpholinopropane sulphonic acid (MOPS); treating with carbon, filering and precipitating by an organic solvent.
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The present invention relates to a novel process for the preparation of cilastatin of formula I by the condensation of 7-chloro-2-[[(1S)-2,2-dimethylcyclopropane] carboxamide]-2-heptenoic acid with L-cysteine in presence of l,8-diazabicyclo[4.3.0]undec-7-ene (DBU) and a solvent.
FIG