Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
Review
. 2008 Feb 7;13(2):319-30.
doi: 10.3390/molecules13020319.

Nitroalkanes as central reagents in the synthesis of spiroketals

Affiliations
Review

Nitroalkanes as central reagents in the synthesis of spiroketals

Roberto Ballini et al. Molecules. .

Abstract

Nitroalkanes can be profitably employed as carbanionic precursors for the assembly of dihydroxy ketone frameworks, suitable for the preparation of spiroketals. The carbon-carbon bond formation is carried out exploiting nitroaldol and Michael reactions, while the nitro to carbonyl conversion (Nef reaction) ensures the correct introduction of the keto group. Several spiroketal systems endowed with considerable biological activity can be prepared using this synthetic strategy.

PubMed Disclaimer

Figures

Scheme 1
Scheme 1
Scheme 2
Scheme 2
Scheme 3
Scheme 3
Scheme 4
Scheme 4
Scheme 5
Scheme 5
Scheme 6
Scheme 6
Scheme 7
Scheme 7
Scheme 8
Scheme 8
Scheme 9
Scheme 9
Scheme 10
Scheme 10
Scheme 11
Scheme 11
Scheme 12
Scheme 12

References

    1. Perron F., Albizati K. F. Chemistry of Spiroketals. Chem. Rev. 1989;89:1617–1661. doi: 10.1021/cr00097a015. - DOI
    1. Brimble M. A., Farès A. F. Synthesis of Bis-Spiroacetals Ring Systems. Tetrahedron. 1999;55:7661–7706. doi: 10.1016/S0040-4020(99)00387-7. - DOI
    1. Franke W., Kitching W. Spiroacetals in Insects. Curr. Org. Chem. 2001;5:233–251. doi: 10.2174/1385272013375652. - DOI
    1. Rodríguez S., Wipf P. Oxidative Spiroacetalizations and Spirolactonizations of Arenes. Synthesis. 2004:2767–2783.
    1. Aho J. E., Pihko P. M., Rissa T. K. Nonanomeric Spiroketal in Natural Products: Structures, Sources and Synthetic Strategies. Chem. Rev. 2005;105:4406–4440. doi: 10.1021/cr050559n. - DOI - PubMed

Publication types

MeSH terms

LinkOut - more resources