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Derek Walker

Schering-Plough

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Publication

Featured researches published by Derek Walker.

Archive | 1995

Process for the preparation of intermediates useful in the synthesis of cephalosporins

Derek Walker; Junning Lee; Charles R. Martin; Haiyan Zhang; Loris Sogli; Ermanno Bernasconi; Vinod Parakkal Menon

Organic Process Research & Development | 2002

Ceftibuten: Development of a commercial process based on cephalosporin C. Part IV. Pilot-plant scale electrochemical reduction of 3-acetoxymethyl-7(R)-glutaroylaminoceph-3-em-4-carboxylic acid 1(S)-oxide

Dennis Chai; David Genders; Norman L. Weinberg; Guillermo Daniel Zappi; Ermanno Bernasconi; Junning Lee; Jacopo Roletto; Loris Sogli; Derek Walker; Charles R. Martin; Vinod P. Menon; Piotr Zelenay; Haiyan Zhang

Organic Process Research & Development | 2002

Ceftibuten:† Development of a Commercial Process Based on Cephalosporin C. Part I. Process for the Manufacture of 3-Acetoxymethyl-7(R)-glutaroylaminoceph-3-em-4-carboxylic Acid 1(S)-oxide

Ermanno Bernasconi; David Genders; Junning Lee; David Longoni; Charles R. Martin; Vinod P. Menon; Jacopo Roletto; Loris Sogli; Derek Walker; Guillermo Daniel Zappi; Piotr Zelenay; Haiyan Zhang

Organic Process Research & Development | 2002

Ceftibuten:† Development of a Commercial Process Based on Cephalosporin C. Part III. Process for the Conversion of 3-Exomethylene-7(R)-glutaroylaminocepham-4-carboxylic Acid 1(S)-Oxide to Ceftibuten

Ermanno Bernasconi; Junning Lee; Loris Sogli; Derek Walker

Archive | 1990

Process for preparing antibacterial compounds and intermediates thereto

Jon E. Clark; Doris P. Schumacher; Derek Walker

Archive | 1990

Process for producing antibacterial intermediates via enzyme hydrolysis of racemic substrates

Jon E. Clark; Doris P. Schumacher; Derek Walker

Archive | 1976

Oxidation of hydrazones to the corresponding diazo compound

Gerard Gallagher; Derek Walker

ChemInform | 2010

Dilevalol Hydrochloride: Development of a Commercial Process

Derek Walker

Archive | 2007

Excursions in the β‐Lactam and Steroid Fields

Derek Walker

Archive | 2007

Regulatory Affairs: Meeting the U.S. Food and Drug Administration (FDA) Requirements

Derek Walker

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Collaboration

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Ermanno Bernasconi

Schering-Plough

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Junning Lee

Schering-Plough

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Loris Sogli

Schering-Plough

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Charles R. Martin

Schering-Plough

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Doris P. Schumacher

Schering-Plough

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Haiyan Zhang

Schering-Plough

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Jon E. Clark

Schering-Plough

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Vinod P. Menon

Colorado State University

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Vinod Parakkal Menon

Schering-Plough

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