論文

2021年6月

Asymmetric total synthesis of (-)-javaberine A and (-)-epi-javaberine A based on catalytic intramolecular hydroamination of N-methyl-2-(2-styrylaryl)ethylamine

TETRAHEDRON
  • Saho Uenishi
  • ,
  • Rina Kakigi
  • ,
  • Kumiko Hideshima
  • ,
  • Akari Miyawaki
  • ,
  • Junpei Matsuoka
  • ,
  • Tokutaro Ogata
  • ,
  • Kiyoshi Tomioka
  • ,
  • Yasutomo Yamamoto

90
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1016/j.tet.2021.132165
出版者・発行元
PERGAMON-ELSEVIER SCIENCE LTD

Asymmetric total synthesis of (-)-javaberine A and its epimer was achieved by utilizing two methods for isoquinoline synthesis, asymmetric hydroamination of N-methyl-2-(2-styrylaryl)ethylamine and Bischler-Napieralski cyclization. Intramolecular asymmetric hydroamination of N-methyl aminoalkene 4 was catalyzed by lithium amide-chiral bisoxazoline to give tetrahydroisoquinoline (S)-laudanosine with good enantioselectivity in excellent yield. N-Demethylation of (S)-laudanosine was accomplished by Polonovski-type reaction to give (S)-norlaudanosine. Condensation of (S)-norlaudanosine with homoveratric acid, and subsequent Bischler-Napieralski cyclization, LiAlH4 reduction, and O-demethylation furnished (8R,14S)-(-)-javaberine A, corresponding to antipode of natural javaberine A. (8S,14S)-(-)-Javaberine A, which corresponds to C14-epimer of natural javaberine A, was also successfully synthesized. (C) 2021 Elsevier Ltd. All rights reserved.

リンク情報
DOI
https://doi.org/10.1016/j.tet.2021.132165
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000663120400002&DestApp=WOS_CPL
ID情報
  • DOI : 10.1016/j.tet.2021.132165
  • ISSN : 0040-4020
  • eISSN : 1464-5416
  • Web of Science ID : WOS:000663120400002

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