Shiv Alwera

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Diastereomers of (RS)-propranolol were synthesized using (S)-levofloxacin-based new chiral derivatizing reagents (CDRs). Levofloxacin was chosen as the pure (S)-enantiomer for its high molar absorptivity (εo  ∼ 24000) and availability at a low price. Its -COOH group had N-hydroxysuccinimide and N-hydroxybenzotriazole, which acted as good leaving groups(More)
Diastereomers of racemic β-adrenolytic drugs [namely (RS)-propranolol, (RS)-metoprolol and (RS)-atenolol] were synthesized under microwave irradiation with (S)-ketoprofen based chiral derivatization reagents (CDRs) newly synthesized for this purpose. (S)-Ketoprofen was chosen for its high molar absorptivity (εo  ~ 40,000) and its availability as a pure(More)
Enantioseparation of a few commonly administered racemic β-adrenolytics (namely, carvedilol, betaxolol, salbutamol and bisoprolol) has been achieved using a water micellar mobile phase containing surfactants (sodium dodecyl sulphate and Brij-35) without organic solvents as a new approach in RP-HPLC. Two chiral derivatizing reagents based on enantiomerically(More)
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