New Guaipyridine Sesquiterpene Alkaloids from <i>Artemisia rupestris</i> L.
Zhen SuKey Laboratory of Chemistry of Plant Resources in Arid Regions, Xinjiang Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Urumqi 830011, P. R. China, (phone: +86-991-3835678; fax: +86-991-3835679)Hankui WuKey Laboratory of Chemistry of Plant Resources in Arid Regions, Xinjiang Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Urumqi 830011, P. R. China, (phone: +86-991-3835678; fax: +86-991-3835679)Fei HeGraduate School of the Chinese Academy of Sciences, Beijing 100039, P. R. ChinaUsmanova SlukhanYunusov Institute of the Chemistry of Plant Substances, Academy of Sciences of the Republic of Uzbekistan, Tashken, UzbekistanH. A. AisaKey Laboratory of Chemistry of Plant Resources in Arid Regions, Xinjiang Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Urumqi 830011, P. R. China, (phone: +86-991-3835678; fax: +86-991-3835679)
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Аннотация
Abstract Three new guaipyridine sesquiterpene alkaloids, rupestine A, B, C ( 1 – 3 , resp.), and the new nor‐sesquiterpne alkaloid rupestine D ( 4 ) were obtained from the flowers of Artemisia rupestris L. Their structures were elucidated on the basis of sepectroscopic data and by comparison with those of the related compounds reported in the literature. In addition, the absolute configurations of 2 and 4 were determined by single‐crystal X‐ray diffraction analyses.
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