New dibenz[b, f]oxepins from Cercis chinensis Bunge |
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| Authors: | LI-HUA Mu JIAN-BEI Li JING-ZHI Yang DONG-MING Zhang |
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| Affiliation: | a Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China |
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| Abstract: | Three new dibenz[b,f]oxepins: 6-methoxy-7-methyl-8-hydroxydibenz[b, f]oxepin (1), 1,8-dimethoxy-6-hydroxy-7-methyldibenz[b, f]oxepin (2), and 1-hydroxy-6,8-dimethoxy-7-methyldibenz[b,f]oxepin (3), along with two known dibenz[b,f]oxepins pacharin (4) and bauhiniastatin 4 (5), were isolated from Cercis chinensis Bunge (Leguminosae). Their structures were elucidated on the basis of spectroscopic evidence (EI-MS, UV, IR, 1H, 13C and 2D NMR). Compounds 1-5 were isolated from the Cercis genus for the first time. |
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| Keywords: | Cercis chinensis Bunge Leguminosae Dibenz[b f]oxepins |
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