Successive Michael reaction-sigmatropic rearrangement of naphthodiquinone with O-silylated ketene acetals leading to synthesis of cycloshikonin and structure-reactivity relationship for side chain of naphthazarins

DOI: 10.1248/cpb.41.1549

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Chemical and Pharmaceutical Bulletin p. 1549 - 1556 (1993)

Update date:2022-07-30

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Authors:

Aso Aso

Kanematsu

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Article abstract of DOI:10.1248/cpb.41.1549

Synthesis of cycloshikonin via successive Michael reaction-sigmatropic rearrangement of naphthodiquinone with O-silylated ketene acetals is described. The structure dependence of the reactivity of the side chain of intermediary naphthazarin derivatives ha

Full text of DOI:10.1248/cpb.41.1549

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