A straightforward conversion of aurones to 2-benzoylbenzofurans: transformation of one class of natural products into another
摘要:
The naturally occurring aurones (2-benzylidene-3(2H)-benzofuran-3-ones) can be easily converted to another class of natural products 2-benzoylbenzo[b]furans, via an effective reduction, acid-mediated rearrangement, and oxidation cascade. This easy conversion was conducted without purification of intermediates. This straightforward conversion may be considered as a possible biosynthesis pathway of 2-benzoylbenzo[b]furans in plants. (C) 2011 Elsevier Ltd. All rights reserved.
Copper(I)-Catalyzed Chemoselective Reduction of Benzofuran-2-yl Ketones to Alcohols with B<sub>2</sub>pin<sub>2</sub> via a Domino-Borylation-Protodeboronation Strategy
作者:Qingqing Xuan、Weiguang Kong、Qiuling Song
DOI:10.1021/acs.joc.7b00596
日期:2017.7.21
A novel copper(I)-catalyzed chemoselective reduction of the carbonyls of benzofuran-2-yl ketones over furan rings with B2pin2 has been developed. This reaction proceeded under mild conditions. High valuable secondary alcohol derivatives of benzofurans were obtained in good to excellent yields with a broad substrate scope. The mechanistic studies suggested that a domino-borylation-protodeboronation
The synthesis of a series of novel 1-[(benzofuran-2-yl)phenylmethyl]-triazoles and -tetrazoles is described. The compounds were tested for human placental aromatase inhibition in vitro, using [1beta-3H]-androstenedione as the substrate for the aromatase enzyme, the percentage inhibition and IC50 data is included.
Synthesis and pharmacological study of new calcium antagonists, analogues of cinnarizine and flunarizine
作者:S Younes、G Baziard-Mouysset、G de Saqui-Sannes、JL Stigliani、M Payard、R Bonnafous、J Tisne-Versailles
DOI:10.1016/0223-5234(93)90049-k
日期:1993.1
Several phosphonic diethyl esters were synthesized and their calcium antagonistic activity evaluated in vitro. The diethyl phosphonate group was condensed on substituted [diphenylmethyl], [(2-benzofuranyl)phenylmethyl], [(4-(diphenylmethyl-1 piperazinyl) methyl], [4-(4-diphenylmethyl-1-piperazinyl methyl) phenylmethyl], and [4-(3-phenyl-2-propenyl)-1-piperazinyl methyl] groups. Despite the presence of the diethyl phosphonate moiety and the benzhydrylpiperazinyl group, both present in potent calcium antagonist structures, only 1 of the 19 synthesized compounds exhibited a calcium antagonistic profile.
Synthesis of aryl 2-benzofuranyl and aryl 2-indolyl carbinols of high enantiomeric purity via palladium-catalyzed heteroannulation of chiral arylpropargylic alcohols
作者:Maurizio Botta、Vincenzo Summa、Federico Corelli、Giovanna Di Pietro、Paolo Lombardi
DOI:10.1016/0957-4166(96)00138-3
日期:1996.5
2-Iodophenol and 2-iodo-N-mesylaniline have been reacted with alpha-arylpropargylic alcohols of high enantiomeric purity under transition-metal catalysis leading to aryl 2-benzofuranyl and aryl 2-indolyl carbinols in good yield and high enantiomeric excess, thus constituting the first enantiospecific synthesis of these important classes of compounds. Copyright (C) 1996 Elsevier Science Ltd
PESTELLINI, VITTORIO;GIOLITTI, ALESSANDRO;PASQUII, FRANCO;ABELLI, LUIGI;C+, EUR. J. MED. CHEM., 23,(1988) N 2, 203-206