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New Isoprenylated 2‐Arylbenzofurans and Pancreatic Lipase Inhibitory Constituents from Artocarpus nitidus
Authors:Ting Zhao  Gui‐Rui Yan  Sheng‐Li Pan  He‐Yao Wang  Ai‐Jun Hou
Institution:1. Department of Pharmacognosy, School of Pharmacy, Fudan University, 826 Zhang Heng Road, Shanghai 201203, P.?R. China, (phone: +86‐21‐51980005;2. fax: +86‐21‐51980005);3. The State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Science, 555 Zu Chong Zhi Road, Shanghai 201203, P.?R. China
Abstract:Two new isoprenylated 2‐arylbenzofurans, artonitidin A (=(2′R)‐2′,3′‐dihydro‐2′‐(1‐hydroxy‐1‐methylethyl)‐5′,7‐bis(3‐methylbut‐2‐en‐1‐yl)‐2,4′‐bi‐1‐benzofuran‐6,6′‐diol; 1 ) and artonitidin B (=5‐6‐hydroxy‐7‐(3‐methylbut‐2‐en‐1‐yl)‐1‐benzofuran‐2‐yl]‐4‐(3‐methylbut‐2‐en‐1‐yl)benzene‐1,3‐diol; 2 ), together with 14 known compounds, 3 – 16 , were isolated from the stems of Artocarpus nitidus Trec. The structures were elucidated by spectroscopic methods. Norartocarpin ( 3 ), cudraflavone C ( 5 ), brosimone I ( 8 ), artotonkin ( 11 ), albanin A ( 13 ), and artopetelin M ( 14 ) showed inhibitory effects on pancreatic lipase with IC50 values ranging from 1.8±0.1 to 63.8±3.6 μM .
Keywords:Artocarpus nitidus  Arylbenzofurans  Inhibitors  Artonitidins A and B  Pancreatic lipase
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