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New 5-Methylcoumarin derivatives from Ethulia conyzoides |
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| Authors: | Shafik I. Balbaa Ahmed F. Halim Fathi T. Halaweish Ferdinand Bohlmann |
| Affiliation: | 1. Faculty of Pharmacy, Mansoura University, Mansoura, Egypt;2. Institute of Organic Chemistry, Technical University Berlin, Strasse des 17 Juni 135, D-1000 Berlin 12, West Germany |
| Abstract: | A reinvestigation of the aerial parts of E. conyzoides L. afforded three new 5-methyl coumarins and a degraded nor compound with an eucarvone part. The structures were elucidated using spectral methods and some chemical transformations. The biogenetic relationships of these compounds are discussed. |
| Keywords: | Compositae coumarins terpene derivatives 5-methyl coumarins eucarvone derivative. |
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