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Biflavonoids from Lonicera japonica |
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| Authors: | Kumar Neeraj Singh Bikram Bhandari Pamita Gupta Ajai P Uniyal Sanjay K Kaul Vijay K |
| Institution: | Natural Plant Products Division, Institute of Himalayan Bioresource Technology, Palampur, HP 176 061, India. |
| Abstract: | Two biflavonoids, 3'-O-methyl loniflavone 5,5',7,7'-tetrahydroxy 3'-methoxy 4',4'-biflavonyl ether (1)] and loniflavone 5,5',7,7',3'-pentahydroxy 4',4'-biflavonyl ether (2)] along with luteolin (3) and chrysin (4) were isolated from the leaves of Lonicera japonica. The structures were established on the basis of UV/vis, 1D, 2D NMR (HMQC and HMBC) and ESI-QTOF-MS/MS spectroscopic methods and chemical evidences. |
| Keywords: | Lonicera japonica Caprifoliaceae Biflavone 3′-O-methyl loniflavone Loniflavone |
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