Chemoenzymatic Access to Versatile Epoxyquinol Synthons
摘要:
The enantiomerically pure and readily available metabolites 10-12 have been converted over four simple steps into the epoxyquinol derivatives 22-24, respectively. Compounds 23 and 24 or their immediate precursors have been exploited in efficient total syntheses of (-)-bromoxone (ent-1), (-)-epiepoformin (ent-2), (-)-harveynone (4), (+)-panepophenanthrin (6), and (+)-hexacyclinol (9).
Sonogashira Coupling of 2-Iodo-2-cycloalkenones: Synthesis of (+)- and (−)-Harveynone and (−)-Tricholomenyn A
作者:Michael W. Miller、Carl R. Johnson
DOI:10.1021/jo962295y
日期:1997.3.1
Graham, Andrew E.; Taylor, Richard J. K., Journal of the Chemical Society. Perkin transactions I, 1997, # 8, p. 1087 - 1089
作者:Graham, Andrew E.、Taylor, Richard J. K.
DOI:——
日期:——
A double oxidation procedure for the preparation of halogen-substituted para-benzoquinone monoketals: asymmetric synthesis of (−)-harveynone
作者:Daniel R. Hookins、Richard J.K. Taylor
DOI:10.1016/j.tetlet.2010.10.047
日期:2010.12
The double oxidation of halophenols with hypervalent iodine reagents in methanol provides a simple procedure to prepare halo-1,4-benzoquinone monoketals. Seven examples of this procedure are reported as is the conversion of 3-iodo-4,4-dimethoxycyclohexa-2,5-dienone into the natural product, (-)-harveynone. (C) 2010 Elsevier Ltd. All rights reserved.