New Lignans from the Aerial Parts of Rudbeckia laciniata |
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| Authors: | Seung Young Lee Kyeong Wan Woo Chung Sub Kim Dong Ung Lee Kang Ro Lee |
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| Institution: | 1. Natural Products Laboratory, School of Pharmacy, Sungkyunkwan University, Suwon 440‐746, Korea, (phone: +82‐31‐290?7710;2. fax: +82‐31‐290?7730);3. College of Science and Technology, Dongguk University, Gyeong Ju 780‐714, Korea |
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| Abstract: | Three new furofuran lignans, (+)‐4,4′‐O‐diangeloylpinoresinol ( 1 ), (+)‐4,4′‐O‐diangeloylmedioresinol ( 2 ), and (+)‐4,4′‐O‐diangeloylsyringaresinol ( 3 ), together with the known compound (+)‐syringaresinol, were isolated from the MeOH extract of Rudbeckia laciniata. The structure elucidation of these compounds were based on 1D‐ and 2D‐NMR, and HR‐ESI‐MS data. The additional structural evidence was obtained from alkaline hydrolysis of the compounds. |
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| Keywords: | Rudbeckia laciniata Lignans Furofuran lignans |
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