New PDF release: Heterocyclic Scaffolds I: ß-Lactams (Topics in Heterocyclic

By Bimal K. Banik

ISBN-10: 3642128440

ISBN-13: 9783642128448

ISBN-10: 3642128459

ISBN-13: 9783642128455

Contents: B. Alcaide ∙ P. Almendros: Novel facets at the education of Spirocyclic and Fused Unsual β-Lactams.- S.S. Bari ∙ A. Bhalla: Spirocyclic β-Lactams: Synthesis and organic overview of Novel Heterocycles.- L. Troisi ∙ C. Granito ∙ E. Pindinelli: Novel and up to date Synthesis and functions of β-Lactams.- C. Palomo ∙ M. Oiarbide: β-Lactams Ring beginning: an invaluable access to Amino Acids and appropriate Nitrogen-Containing Compounds.- B. Mandal ∙ P. Ghosh ∙ B. Basu: contemporary techniques in the direction of stable part Synthesis of β-Lactams.- A.Arrieta ∙ B. Lecea ∙ F.P. Cossio: Computational reports at the Synthesis of β-Lactams through [ 2+2] Thermal Cycloadditions.- B. okay. Banik ∙ I. Banik ∙ F. F. Becker: Novel Anticancer β-Lactams

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Extra info for Heterocyclic Scaffolds I: ß-Lactams (Topics in Heterocyclic Chemistry)

Example text

89 4 Concluding Remarks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95 References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Then, it was decided to carry out reduction of the azide and in situ cyclization and protection of the resultant secondary amine as the benzylcarbamate. Interestingly, exposure of compound 198 to H2 (1 atm) in ethyl acetate at room temperature in the presence of a catalytic amount of Pd (10% on C) followed by the addition of benzyl chloroformate, provided the 4-hydroxypipecolic acid analog 199 with a bicyclic b-lactam structure (Scheme 72). A convenient approach to synthesize novel selenium-b-lactams, namely 3-selena-1-dethiacephems 200, was accomplished via the regioselective iodocyclization reaction (Scheme 73) [103].

95 References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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Heterocyclic Scaffolds I: ß-Lactams (Topics in Heterocyclic Chemistry) by Bimal K. Banik


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