A new approach to the synthesis of the 17β-butenolide fragment of cardenolides

DOI: 10.1016/S0040-4039(99)01130-2

Source and publish data:

Tetrahedron Letters p. 5913 - 5914 (1999)

Update date:2022-08-30

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Authors:

Paryzek, Zdzislaw

Blaszczyk, Krzysztof

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Article abstract of DOI:10.1016/S0040-4039(99)01130-2

A new, efficient synthesis of the 17β-butenolide fragment characteristic of cardenolides is effected by [2 + 2]-cycloaddition of dichloroketene to 3β-acetoxypregna-5,20-diene, as a key step.

Full text of DOI:10.1016/S0040-4039(99)01130-2

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