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Beilstein J. Org. Chem. 2022, 18, 1385–1395, doi:10.3762/bjoc.18.143
Graphical Abstract
Figure 1: Structures of leustroducsins and phoslactomycins.
Figure 2: Synthetic strategy for the leustroducins and phoslactomycins.
Figure 3: strategy for the synthesis of central fragment 4: nitroso Diels–Alder reaction.
Scheme 1: A highly regio-and stereoselective nitroso Diels–Alder cycloaddition between Wightman’s reagent 6 a...
Scheme 2: Hydrolysis of enol phosphate in the unprotected cycloadduct.
Scheme 3: Attempts for hydrolysis of the enol phosphate under basic conditions.
Scheme 4: Cleavage of enol phosphate with Red-Al.
Scheme 5: Synthesis of the protected central fragment 11b.
Scheme 6: Synthesis and derivatization of the lactone fragment.
Scheme 7: Coupling reaction between alkyne 19 and ketone 11b.
Scheme 8: Coupling reaction between vinyl iodide 20 and ketone 11b.
Scheme 9: Oxidation of the acetal to the lactone.