The present work describes the origin, identification, synthesis, characterization and control of four novel analogues of cefpodoxime proxetil, which are ethyl, methyl, propyl and N-propyl analogues of cefpodoxime proxetil.

The present work describes the identification, origin, synthesis, characterization and control of four novel analogues of lopinavir viz. leucine analogue of lopinavir, isoleucine analogue of lopinavir, methyl analogue of lopinavir and dihydroxy analogue of lopinavir.