Intramolecular reductive cyclization of an enone–aldehyde: a new approach to the synthesis of (±)-majusculone
摘要:
A concise total synthesis of (+/-)-majusculone from 2,6,6-trimethyl-2-cyclohexen-1-one in seven steps is described. Intramolecular reductive cyclization of an enone-aldehyde using samarium diiodide is the key step in this synthesis. (C) 2013 Elsevier Ltd. All rights reserved.
Asymmetric Total Syntheses of (−)-Variabilin and (−)-Glycinol
摘要:
Total syntheses of (-)-variabilin and (-)-glycinol have been accomplished, using the catalytic, asymmetric "Interrupted" Feist-Benary reaction (IFB) as the key transformation to introduce both stereogenic centers. A monoquinidine pyrimidinyl ether catalyst affords the IFB products In over 90% ee in both cases. Other key steps include an intramolecular Buohwald-Hartwig coupling and a nickel-catalyzed aryl tosylate reduction.
Asymmetric Total Syntheses of (−)-Variabilin and (−)-Glycinol
作者:Michael A. Calter、Na Li
DOI:10.1021/ol201332u
日期:2011.7.15
Total syntheses of (-)-variabilin and (-)-glycinol have been accomplished, using the catalytic, asymmetric "Interrupted" Feist-Benary reaction (IFB) as the key transformation to introduce both stereogenic centers. A monoquinidine pyrimidinyl ether catalyst affords the IFB products In over 90% ee in both cases. Other key steps include an intramolecular Buohwald-Hartwig coupling and a nickel-catalyzed aryl tosylate reduction.
Intramolecular reductive cyclization of an enone–aldehyde: a new approach to the synthesis of (±)-majusculone
作者:Day-Shin Hsu、Bing-Chiuan Juo
DOI:10.1016/j.tetlet.2013.01.087
日期:2013.3
A concise total synthesis of (+/-)-majusculone from 2,6,6-trimethyl-2-cyclohexen-1-one in seven steps is described. Intramolecular reductive cyclization of an enone-aldehyde using samarium diiodide is the key step in this synthesis. (C) 2013 Elsevier Ltd. All rights reserved.