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Kumulierte Ylide XX.<sup>1</sup>Synthesen (<i>E</i>)-α,β-ungesättigter macrocyclischer Lactone durch intramolekulare Wittig-Olefinierung via Triphenylphosphoranylidenketen<sup>2</sup>
作者:Hans Jürgen Bestmann、Rainer Schobert
DOI:10.1055/s-1989-27271
日期:——
Cumulated Ylides XX.1 Syntheses of (E)-α,β-Unsaturated Macrocyclic Lactones by Intramolecular Wittig-Olefination via Triphenylphosphoranylideneketene2 Two methods for closure of macrocyclic lactone rings by intramolecular Wittig reaction of (Ï-oxoalkoxy)carbonylmethylenetriphenylphosphoranes are described. The latter are easily accessible by addition of the appropriate (free or protected) Ï-hydroxyalkanals to the cumulated ylide triphenylphosphoranylideneketene. Examples are then given for the use of these methods in natural product synthesis.
累积脲 XX.1 通过三苯基膦亚基乙烯分子内 Wittig 烯化反应合成 (E)-δ,δ-不饱和大环内酯2 描述了通过 (Ï-氧代烷氧基)羰基亚甲基三苯基膦分子内 Wittig 反应封闭大环内酯环的两种方法。通过将适当的(游离或受保护的)Ï-羟基烷烃加入到累积的三苯基膦亚基乙烯炔中,很容易获得后者。然后举例说明了这些方法在天然产物合成中的应用。
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Bestmann, Hans Juergen; Schobert, Rainer, Angewandte Chemie, 1983, vol. 95, # 10, p. 810 - 811
作者:Bestmann, Hans Juergen、Schobert, Rainer
DOI:——
日期:——
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BESTMANN, HANS JURGEN;SCHOBERT, RAINER, SYNTHESIS,(1989) N, C. 419-423
作者:BESTMANN, HANS JURGEN、SCHOBERT, RAINER
DOI:——
日期:——
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AYYARGAR, N. R.;CHANDA, B.;WAKHARKAR, R. D.;KASAR, R. A., SYNTH. COMMUN., 18,(1988) N 16-17, C. 2103-2109
作者:AYYARGAR, N. R.、CHANDA, B.、WAKHARKAR, R. D.、KASAR, R. A.
DOI:——
日期:——
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Ayyangar, N. R.; Chanda, B.; Wakharkar, R. D., Synthetic Communications, 1988, vol. 18, # 16-17, p. 2103 - 2110
作者:Ayyangar, N. R.、Chanda, B.、Wakharkar, R. D.、Kasar, R. A.
DOI:——
日期:——