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  • 1
    Electronic Resource
    Electronic Resource
    Asymmetrized Tris(hydroxymethyl)methane and Related Synthons: Enantioselective Preparation and Synthetic Applications (1998)
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1998 (1998), S. 745-757 
    Details
    ISSN: 1434-193X
    Keywords: Asymmetric synthesis ; Enzyme catalysis ; Lipases ; Epoxidations ; Chiral building blocks ; Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Asymmetrized tris(hydroxymethyl)methane (THYM*) is a new chiral building block easily accessible in both enantiomeric forms by a chemoenzymatic methodology. The presence of three synthetically equivalent masked hydroxymethyl groups and a high degree of latent symmetry (C3v) makes this synthon very versatile in synthetic applications. This review describes its preparation and a series of elaborations (with particular enphasis on the diastereoselective generation of additional chiral centers) leading to advanced intermediated for the preparation of biologically active compounds.
    Type of Medium: Electronic Resource
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    Paper (German National Licenses)
  • 2
    Electronic Resource
    Electronic Resource
    New Approach to β-Lactam-Fused Enediynes (“Lactenediynes”) by Stereoselective Pinacol Coupling (2000)
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 2000 (2000), S. 939-946 
    Details
    ISSN: 1434-193X
    Keywords: Enediynes ; Vanadium ; C-C coupling ; Macrocycles ; Lactams ; Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: ---A short synthesis of unfunctionalized lactenediyne 3 by closure of the ten-membered ring at the double bond site is reported. After failure of the known methodologies, this closure was eventually successfully achieved thanks to a highly stereoselective, vanadium(II)-mediated pinacol coupling of bis(alk-2-ynal) 7.Supporting information for this article is available on the WWW under //http://www.wiley-vch.de/contents/jc_2046/2000/99471_s.pdf or from the author.
    Type of Medium: Electronic Resource
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    Paper (German National Licenses)
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