Synthesis of buf-20(21)-enolides and bufa-20,22-dienolides
- 1 July 1969
- journal article
- Published by Canadian Science Publishing in Canadian Journal of Chemistry
- Vol. 47 (13) , 2511-2513
- https://doi.org/10.1139/v69-416
Abstract
A practical three-step procedure for converting an aldehyde to a 5-substituted dihydro-2-pyrone or by an additional step to the corresponding 2-pyrone has been summarized. Synthesis of 2-pyrone 5, buf-20(21)-enolide 9 (and Δ5-derivative) and bufadienolide 10 were used for illustration.Keywords
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