STUDIES ON QUINONES. VI. ACID-CATALIZED REARRANGEMENTS IN SOME 4-ACETYL-2,3-DIHYDROBENZO[<i>b</i>] FURANS
作者:Luis Barrios、V. Manuel Ruiz、Ricardo Tapia、Jaime Valderrama、Juan C. Vega
DOI:10.1246/cl.1980.187
日期:1980.2.5
N-propenylpiperidine gave the corresponding 2,3-dihydrobenzo[b]furans, 2b and 2c, containing the acetyl group at C-4. Acid treatment of these dihydrofurans rearranged to 8-methyl- and 2-methoxy-8-methyljuglone (4a, 4b). Juglone (4c) and 2,3-dihydrojuglone (6) were obtained in fair yields from 4-acetyl-2,5-dihydroxy-2,3-dihydrobenzo[b]furan (2e).
Synthesis of benzofuran scaffold-based potential PTP-1B inhibitors
作者:Manish Dixit、Brajendra K. Tripathi、Akhilesh K. Tamrakar、Arvind K. Srivastava、Brijesh Kumar、Atul Goel
DOI:10.1016/j.bmc.2006.10.053
日期:2007.1
Protein tyrosine phosphatase 113 (PTP-1B) is an enzyme that plays a critical role in down-regulating insulin signaling through dephosphorylation of the insulin receptor. Studies have shown that PTP-1B knockout mice showed increased insulin sensitivity in muscle and liver as well as resistance to obesity. A series of hydroxy benzofuran methyl ketones and their naturally mimicking dimers and linear and angular furanochalcones and flavones have been evaluated as PTP-1B inhibitors. Screened compounds displayed good inhibitory activity. (c) 2006 Elsevier Ltd. All rights reserved.