Abstract:
The present invention provides a one-pot process for the preparation of meropenem. The present invention further provides a process for the preparation of meropenem trihydrate.
Abstract:
The present invention relates to a process for the preparation of esters of 2-diazo-3-trimethylsilyloxy-3-butenoic acid which comprises reacting a diazoacetoacetate with iodotrimethylsilane in the presence of an organic base, wherein iodotrimethylsilane is prepared by reacting hexamethyldisilane with iodine. The present invention further relates to converting such esters of 2-diazo-3-trimethylsilyloxy-3-butenoic acid to other compounds, such as a substituted diazoazetidinone, an azetidinone, or a bicyclo ketoester.
Abstract:
The invention relates to N-methylpyrrolidone and N,N-dimethylacetamide solvates of cefprozil. The invention also relates to processes for preparing the solvates of cefprozil, crystalline cefprozil from said solvates and pharmaceutical compositions that include the crystalline cefprozil.
Abstract:
The invention relates to pure 7- amino (p-hydroxyphenylglycyl) cephem compounds. The invention also relates to processes for the preparation of pure 7- amino (p-hydroxyphenylglycyl) cephem compounds and pharmaceutical compositions that include the pure 7- amino (p-hydroxyphenylglycyl) cephem compounds.
Abstract:
This invention relates to monohydrate solvates of loracarbef. The invention also relates to processes for preparing solvates of loracarbef, crystalline monohydrate of loracarbef from said solvates and pharmaceutical compositions that include the crystalline monohydrate of loracarbef.
Abstract:
The present invention relates to process and intermediates for the preparation of substituted 1,3-oxathiolanes. The present invention specifically relates to a process for the preparation of lamivudine.
Abstract:
The invention relates to solvates of cefprozil. The invention also relates to processes for preparing the solvates of cefprozil, crystalline cefprozil from said solvates and pharmaceutical compositions that include the crystalline cefprozil.