Synthesis of Naturally Occurring Pyrazine and Imidazole Alkaloids from Botryllus LeachiRID=”a”ID=”a”?Dedicated to Prof. G. M?rkl on the occasion of his 75th birthday |
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| Authors: | Siavosh Mahboobi Andreas Sellmer Thomas Burgemeister Alexei Lyssenko Dieter Schollmeyer |
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| Affiliation: | (1) Faculty of Chemistry and Pharmacy, University of Regensburg, D-93040 Regensburg, Germany;(2) Institute of Organic Chemistry, University of Mainz, D-55099 Mainz, Germany |
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| Abstract: | The synthesis of the naturally occurring and biologically active alkaloids 1 and 2, first isolated from the red ascidian Botryllus leachi by Duran et al. [1], is described and the structure proposed for Botryllazine B (1) is confirmed. The analytical data for 2-(p-hydroxybenzoyl)-4-(p-hydroxyphenyl)imidazole (2) are discussed and compared with the literature. With special emphasis of 1H NMR data the tautomerism of aroylimidazolemethanones is described. |
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| Keywords: | . Pyrazine and imidazole alkaloids Annular tautomers Botryllus leachi Biologically active compounds. |
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