Benzothiazines in synthesis. Formal syntheses of (+)-curcumene and (+)-curcuphenol
摘要:
A benzothiazine readily available in enantiomerically pure form via a stereoselective, intramolecular Michael addition reaction could be converted to a precursor to (+)-curcuphenol and to (+)-curcumene. (C) 2003 Elsevier Ltd. All rights reserved.
Benzothiazines in synthesis. Formal syntheses of (+)-curcumene and (+)-curcuphenol
摘要:
A benzothiazine readily available in enantiomerically pure form via a stereoselective, intramolecular Michael addition reaction could be converted to a precursor to (+)-curcuphenol and to (+)-curcumene. (C) 2003 Elsevier Ltd. All rights reserved.
Benzothiazines in Synthesis: Studies Directed toward the Synthesis of Erogorgiaene
作者:Michael Harmata、Xuechuan Hong、Peter R. Schreiner
DOI:10.1021/jo701935s
日期:2008.2.1
The use of benzothiazenes for the formal total synthesis of erogorgiaene and stereoselective total syntheses of two diastereomers of this natural product is described. In particular, the stereochemical course of a radical cyclization anticipated to give the correct relative stereochemistry for the synthesis of erogorgiaene is discussed utilizing both experimental and computational data.
ortho Substituent effect on a 1,5-H shift reaction during thermal decomposition of aryltriazenes
作者:Michael Harmata、Xuechuan Hong、Pinguan Zheng
DOI:10.1016/j.tetlet.2006.08.017
日期:2006.10
An orthosubstituent group has a significant effect on thermal decomposition of aryltriazenes. When the ortho methoxy-substituted phenyltriazenes were treated with methyl iodide at 110–130 °C, 1,5-H shift products were obtained in fair to moderate yields.
Benzothiazines in synthesis. Formal synthesis of erogorgiaene
作者:Michael Harmata、Xuechuan Hong
DOI:10.1016/j.tetlet.2005.03.184
日期:2005.5
A benzothiazine, readily available in enantiomerically pure form via a completely selective, intramolecular addition of a sulfoximine-stabilized carbanion to an alpha, beta-unsaturated ester, could be converted to a precursor to erogorgiaene in good overall yield. (c) 2005 Elsevier Ltd. All rights reserved.