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A new method for the synthesis of Δ1-butenolides

✍ Scribed by William W. Epstein; Arch C. Sonntag

Publisher
Elsevier Science
Year
1966
Tongue
French
Weight
211 KB
Volume
7
Category
Article
ISSN
0040-4039

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✦ Synopsis

The d-butenolide function occurs widely in nature as part of a fused ring system such as that of eremophilenolide (1) or as a separate ring in many of the physiologically important cardiac-glycosides (2). Although a large nmnber of synthetic approaches have been reported (3)_for d-butenolide formation, they all suffer from. one or more faults, the prims one being low yields. We would like to report a new method for the preparation of model Ai-butenolides similar to the naturally occurring ones in significantly higher over-all yields than those previously reported.

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