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Beilstein J. Org. Chem. 2021, 17, 115–123, doi:10.3762/bjoc.17.12
Graphical Abstract
Scheme 1: Our previous efforts in the field of functionalization of sugar-derived lactams.
Figure 1: Key concepts behind the goal of this work [34].
Scheme 2: Preliminary experiment in search of a procedure for the synthesis of 2-(1H-tetrazol-5-yl)-iminosuga...
Scheme 3: Synthesis of a new class of alkaloid scaffold using the presented methodology.
Scheme 4: Synthesis of a new, chiral 2-(tetrazol-5-yl)-iminosugar based potential organocatalyst.
Scheme 5: Principle behind Woerpel’s model for prediction of the direction of nucleophile addition to oxocarb...
Scheme 6: Difference in conformational stability of glucose- and galactose-derived iminium cations and the maj...
Figure 2: ORTEP structures of compounds 3a and 3e obtained by X-ray analysis. Hydrogen atoms and benzyl group...
Figure 3: Proposed structures of compounds 5a and 2-epi-5a with 1H-1H couplings and NOE effects shown.
Scheme 7: Proposed reaction mechanism for the described Ugi–azide reaction variant.
Scheme 8: Possible pathway for spontaneous imine formation. Values reported are in kcal·mol−1.
Scheme 9: A possible path for tetrazole formation in the described conditions. Values reported are in kcal·mol...