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The germacranolides of Viguiera buddleiaeformis structures of budlein-A and -B |
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| Authors: | Alfonso Romo de Vivar Carlos Guerrero Eduardo Díaz Eugene A. Bratoeff Leticia Jiménez |
| Affiliation: | 1. Instituto de Química de la Universidad Nacional Autónoma de México, México 20, D.F;2. División de Estudios Superiores de la Facultad de Química de la Universidad Nacional Autónoma de México México |
| Abstract: | The structure of budlein-A, the main sesquiterpene lactone of Viguiera buddleiaeformis was established as the 8 angeloyl ester of 1 keto, 8-β, 14-dihydroxy germacra-2,4,11 (13)-trien-3, (10 β) oxido-6 α, 12-olide. Its structure and stereochemistry was determined by chemical and spectroscopic means. Budlein-B, found in the same plant as a minor constituent, is 8 α, 15-dihydroxygermacra-1 (10), 4, 11 (13)-trien-6 α, 12-olide. |
| Keywords: | Compositae budlein A and B germacranolides structure determination. |
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