An efficient synthesis of novel 2,4-disubstituted tetrahydroquinolines and quinolines
作者:Ruth Devakaram、David StC. Black、Naresh Kumar
DOI:10.1016/j.tetlet.2012.02.043
日期:2012.5
A series of novel tetrahydroquinolines have been synthesized via the acid-catalyzed reaction of an aza-flavan-4-ol with a variety of reactive nucleophiles. The tetrahydroquinolines were found to undergo oxidation in the presence of iodine as catalyst to generate the corresponding novel 2,4-disubstituted quinolines. (C) 2012 Elsevier Ltd. All rights reserved.
Synthesis of oxygenated 4-arylisoflavans and 4-arylflavans
Oxygenated 4-arylisoflavans and 4-heteroarylisoflavans were synthesized in good yields via BF3 center dot OEt2 catalyzed arylation reactions of 4',7-diacetoxyisoflavan-4-ol 8 with activated aryl and heteroaryl compounds. These reactions were found to produce stereoselectively the trans isomers. Similar reactions of 4',7-diacetoxyflavan-4-ol 16 afforded the corresponding 4-arylflavans and 4-heteroarylflavans as mixtures of cis/trans isomers. (C) 2012 Elsevier Ltd. All rights reserved.
179. The chemistry of subterranean clover. Part II. Synthesis and reduction of isoflavones related to genistein and formononetin
作者:R. B. Bradbury、D. E. White
DOI:10.1039/jr9530000871
日期:——
Ring-closing metathesis in flavonoid synthesis, part 3: isoflavenes
作者:Tanya Pieterse、Charlene Marais、Barend C. B. Bezuidenhoudt