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  1. Artikel: Asymmetric Total Synthesis and Structure Elucidation of Huperzine H

    Shiomi, Shinya / Wilailak, Kaewsri / Soutome, Wataru / Takayama, Hiromitsu / Kitajima, Mariko / Ishikawa, Hayato

    Journal of organic chemistry. 2022 Jan. 18, v. 87, no. 5

    2022  

    Abstract: A first asymmetric total synthesis of huperzine H has been achieved in a 12% overall yield from commercially available (+)-pulegone. The key steps of this synthesis include a highly diastereoselective Mukaiyama–Michael addition reaction of a pyrrole ... ...

    Abstract A first asymmetric total synthesis of huperzine H has been achieved in a 12% overall yield from commercially available (+)-pulegone. The key steps of this synthesis include a highly diastereoselective Mukaiyama–Michael addition reaction of a pyrrole bearing a silyl enol ether and an intramolecular SN2 cyclization reaction with iodinated pyrrole acting as an effective nucleophile for the formation of the nine-membered ring. As a result, the relative and absolute stereochemistry of huperzine H is established.
    Schlagwörter Lewis bases ; cyclization reactions ; diastereoselectivity ; organic chemistry ; pyrroles ; silyl enol ethers ; stereochemistry
    Sprache Englisch
    Erscheinungsverlauf 2022-0118
    Umfang p. 3730-3735.
    Erscheinungsort American Chemical Society
    Dokumenttyp Artikel
    ZDB-ID 123490-0
    ISSN 1520-6904 ; 0022-3263
    ISSN (online) 1520-6904
    ISSN 0022-3263
    DOI 10.1021/acs.joc.1c02672
    Datenquelle NAL Katalog (AGRICOLA)

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  2. Artikel ; Online: Asymmetric Total Synthesis and Structure Elucidation of Huperzine H.

    Shiomi, Shinya / Wilailak, Kaewsri / Soutome, Wataru / Takayama, Hiromitsu / Kitajima, Mariko / Ishikawa, Hayato

    The Journal of organic chemistry

    2022  Band 87, Heft 5, Seite(n) 3730–3735

    Abstract: A first asymmetric total synthesis of huperzine H has been achieved in a 12% overall yield from commercially available (+)-pulegone. The key steps of this synthesis include a highly diastereoselective Mukaiyama-Michael addition reaction of a pyrrole ... ...

    Abstract A first asymmetric total synthesis of huperzine H has been achieved in a 12% overall yield from commercially available (+)-pulegone. The key steps of this synthesis include a highly diastereoselective Mukaiyama-Michael addition reaction of a pyrrole bearing a silyl enol ether and an intramolecular S
    Mesh-Begriff(e) Cyclization ; Ethers ; Molecular Structure ; Pyrroles ; Stereoisomerism
    Chemische Substanzen Ethers ; Pyrroles
    Sprache Englisch
    Erscheinungsdatum 2022-01-18
    Erscheinungsland United States
    Dokumenttyp Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 123490-0
    ISSN 1520-6904 ; 0022-3263
    ISSN (online) 1520-6904
    ISSN 0022-3263
    DOI 10.1021/acs.joc.1c02672
    Datenquelle MEDical Literature Analysis and Retrieval System OnLINE

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