Intramolecular [3+2]-hetero-annulation of allylsilanes with 1,3-cyclohexanediones and its application in the synthesis of hexacyclic hopane triterpenes
In this letter we describe the intramolecular [3+2]-hetero-annulation of allylsilanes with 1,3-cyclohexanediones followed by sila-Wagner-Meerwein shift. The new synthesis of the cyclization precursors offers the advantage to vary the silyl terminator at t
Schinzer,Muller,Fischer,Priess
p. 1265 - 1268
(2007/10/03)
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