A Concise Synthesis of (+)-Cerulenin from a Chiral Oxiranyllithium
作者:Neelakandha S. Mani、Craig A. Townsend
DOI:10.1021/jo9618177
日期:1997.2.1
(+)-Cerulenin, a potent fungal inactivator of fatty acid synthases, has been prepared in optically pure form by a sequence involving reaction of a chiral oxiranyllithium with (4E,7E)-nonadienal. Synthesis of the former takes advantage of a particularly favorable Sharpless epoxidation and metalation to a configurationally stable organolithium, while the latter is available in quantity by a direct and improved route.
An Enantiodefined Conformationally Constrained Fatty Acid Mimetic and Potent Inhibitor of ToxT
作者:Lauren E. Markham、Jessica D. Tolbert、F. Jon Kull、Charles R. Midgett、Glenn C. Micalizio
DOI:10.1021/acsmedchemlett.1c00378
日期:2021.9.9
acid mimetics. The best mimetic, based on a chiral hydrindane, was found to be a potent inhibitor of this target. The synthetic chemistry that enabled these studies was based on the sequential use of a stereoselective annulative cross-coupling reaction and dissolving metal reduction to establish the C13 and C9 stereocenters, respectively.
A regioselective synthesis of 2,3-disubstituted-1-naphthols. The coupling of alkynes with 1,2-aryldialdehydes promoted by NbCl3(DME)
作者:Jack B. Hartung、Steven F. Pedersen
DOI:10.1021/ja00196a064
日期:1989.7
Cobalt-Mediated Cross-Coupling Reactions of Primary and Secondary Alkyl Halides with 1-(Trimethylsilyl)ethenyl- and 2-Trimethylsilylethynylmagnesium Reagents
[reaction: see text] This paper describes cobalt-mediated cross-coupling reactions of alkyl halides with 1-(trimethylsilyl)ethenylmagnesium bromide and 2-(trimethylsilyl)ethynylmagnesium bromide, respectively. The cobalt system allows for employing secondary as well as primary alkyl halides as the substrates. The reactions offer facile formations of alkyl-alkenyl and alkyl-alkynyl bonds. The reaction