透過您的圖書館登入
IP:18.222.207.132
  • 學位論文

路易斯酸輔佐六員環烯炔醯胺化合物的環化反應:橋及稠雙環δ-內醯胺化合物的合成

Lewis acid-Promoted Cyclization Reaction of Six-Membered Ring Enynamides : Synthesis of Bridged- and Fused-Bicyclic δ-Lactams

指導教授 : 葉名倉
若您是本文的作者,可授權文章由華藝線上圖書館中協助推廣。

摘要


本文包含兩個主題,一:金(I)催化4-炔醯胺甲基環己烯化合物的分子內環化反應,中間體含氮三環化合物經氧化形成橋雙環δ-內醯胺,二:三氟化硼乙醚輔佐第三丁基二甲基矽保護的2-(乙炔胺)甲基環己-2-烯醇化合物的分子內環化反應,合成六氫異喹啉酮衍生物。 以具芳香族取代的4-炔醯胺甲基環己烯化合物為起始物,在金(I)催化的條件下,進行分子內環化異構化反應,得到4-氮三環[4.2.2.03,8]癸烷中間體,將烷基與芳香族取代的三環併環中間產物,在四氧化鋨與N-甲基嗎啉-N-氧化物的條件下,進行氧化反應,可得到橋雙環δ-內醯胺,在酸性條件下,可以將烷基取代三環併環中間產物轉變成雙環[4.2.0]辛酮衍生物。 利用三氟化硼乙醚輔佐第三丁基二甲基矽保護的2-(乙炔胺)甲基環己-2-烯醇化合物的分子內環化反應,直接合成六氫異喹啉酮衍生物,通過差向異構化(epimerization)反應,將一組六氫異喹啉酮的非鏡像異構物,轉變成單一非鏡像異構物的六氫異喹啉酮衍生物。

並列摘要


The thesis contains two topics. The first part is the synthesis of bridged bicyclic δ-lactams via gold(I)-catalyzed intramolecular cycloisomerization/ox -idation of N-tosyl-4-ynamidomethylcyclohexenes. The second part is the synthesis of hexahydroisoquinolinone derivatives via BF3.OEt2-promoted intramolecular cyclization of alkyl- or aryl-substituted O-silyl-protected 2-((ethynylamino)methyl)cyclohex-2-enols. N-Tosyl-4-ynamidomethylcyclohexenes underwent cycloisomerization in the presence of a catalytic amount of a gold(I) complex delivering 4-azatricyclo[4.2.2.03,8]dec-2-ene derivatives as the major products under mild reaction conditions with high diastereoselectivities. Upon oxidation with osmium tetraoxide and N-methylmorpholine-N-oxide, alkyl- or aryl-substituted azatricycles led to bridged bicyclic δ-lactams. Under acidic conditions, the alkyl-substituted azatricycles were further transformed into 4-N-tosylaminomethyl-tethered bicyclo[4.2.0]octan-7-ones derivatives. The BF3.OEt2-promoted intramolecular cyclization of alkyl- or aryl-substituted O-silyl-protected 2-((ethynylamino)methyl)cyclohex-2-enol enables a straightforward approach to hexahydroisoquinolinone derivatives. Upon epimerization with 1,8-diazabicyclo[5.4.0]undec-7-ene, the mixture of diastereomers afforded hexahydroquinolinone derivatives as a single isomer.

參考文獻


1. Pelletier, S. W.; Page, S. W. Nat. Prod. Rep. 1984, 1, 375.
2. Pelletier, S. W.; Page, S. W. Nat. Prod. Rep. 1986, 3, 451.
3. Ji, H.; Chen, Q.-H.; Zhu, M.; Wang, F.-P. J. Asian Nat. Prod. Res. 2010, 12, 968.
4. Chodoeva, A.; Bosc, J. J.; Guillon, J.; Decendit, A.; Petraud, M.; Absalon, C.; Vitry, C.; Jarry, C.; Robert, J. Bioorg. Med. Chem. 2005, 13, 6493.
5. Hazawa, M.; Wada, K.; Takahashi, K.; Mori, T.; Kawahara, N.; Kashiwakura, I. Invest. New Drugs. 2009, 27, 111.

延伸閱讀