(+/-)-Pterocarpan and analogues (4a-c) have been synthesized efficiently via the annulation of salicylaldehydes (1a, 1b and 1c) and o-methoxymethoxylphenylacetylene (2a), followed by a one-pot reduction and acidic cyclization of the ketones (3a-c). In addition, isoflavone derivatives (5a-c) have been synthesized rapidly, in two steps, via the annulation of salicylaldehyde (1a) and arylacetylenes (2b, 2c and 2d), followed by IBX/DMSO oxidation of the isoflavanones (3d, 3e and 3f). (C) 2007 Elsevier Ltd. All rights reserved.
(+/-)-双
萘烷及其类似物(4a-c)是通过将
水杨醛(1a、1b和1c)和邻甲氧基
甲氧基苯基
乙炔(2a)环化,然后进行酮(3a-c)的一锅还原和酸性环化反应高效合成的。此外,异
黄酮衍
生物(5a-c)是通过
水杨醛(1a)和芳基
乙炔(2b、2c和2d)的环化加成,随后将异
黄酮(3d、3e和3f)进行IBX/
DMSO氧化,快速分两步合成的。版权©2007 Elsevier Ltd. 保留所有权利。