• 제목/요약/키워드: N,O-Acetal TMS ether

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Synthesis of Calycotomine via Pictet-Spengler Type Reaction of N,O-Acetal TMS Ethers as N-Acyliminium Ion Equivalents

  • Yang, Jung-Eun;In, Jin-Kyung;Lee, Mi-Sung;Kwak, Jae-Hwan;Lee, Hee-Soon;Lee, Soo-Jae;Kang, Han-Young;Suh, Young-Ger;Jung, Jae-Kyung
    • Bulletin of the Korean Chemical Society
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    • 제28권8호
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    • pp.1401-1404
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    • 2007
  • An efficient Pictet-Spengler type reaction of N,O-acetal TMS ethers for the practical synthesis of 1-substituted tetrahydroquinolines, medicinally important alkaloids, has been accomplished. To demonstrate the versatility of this novel procedure, the total synthesis of calycotomine, a representative 1-hydroxymethyl substituted tetrahydroisoquinoline, is also described.

The versatile conversion of lactam to the a-alkylated amines via cyclic N.O-acetal TMS ether

  • Suh, Young-Ger;Kim, Seok-Ho;Jung, Jae-Kyung;Shin, Dong-Yun;Lee, Do-Sang;Baek, Seung-Mann
    • 대한약학회:학술대회논문집
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    • 대한약학회 2002년도 Proceedings of the Convention of the Pharmaceutical Society of Korea Vol.2
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    • pp.340.2-340.2
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    • 2002
  • As a part of our continuing studies directed toward the synthesis of the medium to macrolactam alkaloids, we have been interested in the versatile functionalization of the lactam carbonyl. Synthetic routes involving cyclic N-acyliminium ions are generally useful strategies that have been applied for a wide variety of synthetic transformation. Especially, the use of a-alkoxy azacycles as precursors to cyclic N-acyliminium ions was well reviewed. (omitted)

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