Regioselective [2,3] sigmatropic rearran
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Martha A Warpehoski; V.Susan Bradford
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Article
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1986
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Elsevier Science
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French
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A short and efficient synthesis of the 1,2-dihydro-3H-pyrrolo[3,2-elindole (2) ring system of the antitumor antibiotic CC-1065 (1) from ethyl-5-aminoindole-2-carboxylate 3 was made possible by the inherent regioselectivity of the [2,3] sigmatropic rearrangement of the azasulfonium ylide 4 and a thia