β-Isocomen,ein neues sesquiterpen aus Berkheya-arten |
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| Authors: | Ferdinand Bohlmann Ngo Le Van Thi Van Cuong Pham Jasmin Jacupovic Angelica Schuster Volker Zabel William H Watson |
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| Institution: | 1. Institut für Organische Chemie der Technischen Universität Berlin, Straβe des 17. Juni 135, D-1000 Berlin 12, W. Germany;2. Chemistry Department, Texas Christian University, Fort Worth, TX 76129, U.S.A. |
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| Abstract: | The investigation of several Berkheya species afforded in addition to already known compounds three unusual sesquiterpene hydrocarbons. Together with modhephene and isocomene, a new one is present, its structure being elucidated by spectroscopic methods and by some chemical transformations. All 18 species investigated contain the typical thiophene derivatives, isolated earlier; the patterns of compounds present divide the species into two groups. |
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| Keywords: | Compositae new sesquiterpene hydrocarbons thiophenes |
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