A short, vinyl radical cyclisation approach to (±)-2-pupukeanone

Srikrishna, A. ; Vijaykumar, D. ; Sharma, G. V. R. (1997) A short, vinyl radical cyclisation approach to (±)-2-pupukeanone Tetrahedron Letters, 38 (11). pp. 2003-2004. ISSN 0040-4039

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Official URL: http://www.sciencedirect.com/science/article/pii/S...

Related URL: http://dx.doi.org/10.1016/S0040-4039(97)00210-4


Addition of tri-n-butyltin radical to a 5-(prop-2-ynyl)bicyclo[2.2.2]oct-2-ene followed by 5-exo-trig cyclisation of the resulting vinyl radical furnishes an isotwistane, providing a short route to the sesquiterpenes, pupukeananes 4 and 2.

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