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  • 學位論文

金(I)與三氟甲磺酸催化烯炔醯胺分子內環化反應:稠雙環- 與螺環-γ-內醯胺的合成

Gold(I)- and TfOH-Catalyzed Intramolecular Cyclization Reactions of Enynamides: Synthesis of Fused Bicyclic- and Spiro-γ-Lactams

指導教授 : 葉名倉
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摘要


本文包含兩個主題,一:金(I)催化六員環 3-烯炔醯胺化合物進行分子內環化反應合成雙環γ-內醯胺,二:三氟甲磺酸催化具對-甲苯磺醯基保護的3-(((芳香基乙炔)胺)甲基)環己-2-烯醇化合物進行分子內環化反應合成螺旋-γ-內醯胺。 以具芳香族取代的六員環 3-烯炔醯胺化合物為起始物,以金(I)催化進行分子內環化異構化反應得到9-氮三環[5.2.1.03,10]癸烷中間體,在空氣中可以直接氧化得到7-芳醯基全氫異吲哚酮衍生物;以鄰位芳香基取代與烷基取代的六員環 3-烯炔醯胺化合物為起始物時會得到4-氮三環[5.2.1.03,10]癸烷衍生物,此中間產物再加入四氧化鋨與N-甲基嗎啉-N-氧化物進行氧化可得到具7-芳(脂肪)醯基全氫異吲哚酮衍生物。 利用三氟甲磺酸催化具對-甲苯磺醯基保護的3-(((芳香基乙炔)胺)甲基)環己-2-烯醇化合物進行分子內環化異構化反應,首先得到六員環烯丙基碳陽離子中間體,水與此烯丙基碳陽離子以反式方式加成至炔基上,得到4-芳香基-2-含氮螺旋[4.5]癸-6-烯-3-酮衍生物,其為一組含氮螺旋非鏡像異構物,進一步將此混合物以鈀碳催化劑和氫氣還原後可得到單一4-芳香基-2-氮螺旋[4.5]癸烷-3-酮衍生物。

並列摘要


The thesis contains two topics. The first part is the synthesis of bicyclic γ-lactams via gold(I)-catalyzed intramolecular cycloisomerization of six-membered ring 3-enynamides. The second part is the synthesis of spiro-γ-lactams via TfOH-catalyzed intramolecular cycloisomerization of N-tosyl protected 3-(((phenylethynyl)amino)methyl)cyclohex-2-enol. Six-membered ring aryl-substituted 3-enynamides, upon treatment with the gold catalyst, gave a 9-azatricyclo[5.2.1.03,10]decane intermediate, which was spontaneously oxidized to 7-aroyloctahydro-1H-isoindolone in air, while o-aryl-substituted and alkyl-substituted 9-azatricyclo[5.2.1.03,10]decane derivatives were isolated. These azatricycles could be further oxidized to 7-aroyl(alkanoyl)octahydro-1H-isoindolone by osmium tetroxide and N-methylmorpholine N-oxide. Treatment of N-tosyl protected 3-(((arylethynyl)amino)methyl)- cyclohex-2-enol with a catalytic amount of TfOH gave an allylic cationic intermediate Anti-addition of the allylic cation and H2O across the alkyne furnished 4-aryl-2-tosyl-2-azaspiro[4.5]dec-6-en-3-one derivatives after aqueous work up. The mixture of diastereomers was reduced by H2 and a catalytic amount of Pd/C to give 4-aryl-2-tosyl-2-azaspiro[4.5]decan-3-one as a single product.

參考文獻


(1) Saeger, S. D. Determining Mycotoxins and Mycotoxigenic Fungi in Food and Feed, 1st Edition, 2011.
(2) Speck, K.; Magauer, T. Beilstein J. Org. Chem. 2013, 9, 2048.
(3) Scherlach, K.; Boettger, D.; Remme, N.; Hertweck, C. Nat. Prod. Rep. 2010, 27, 869.
(4) Hume, D. A.; Hansen, K.; Weidemann, M. J.; Ferber, E. Nature 1978, 272, 359.
(5) Dombrowski, A. W.; Bills, G. F.; Sabnis, G.; Koupal, L. R.; Meyer, R.; Ondeyka, J. G.; Giacobbe, R. A.; Monaghan, R. L.; Lingham, R. B. J. Antibiot. 1992, 45, 671.

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