We report Au(I)- and Ag(I)-catalyzed cycloisomerizations of epoxide-alkyne functionalities in both aromatic and nonaromatic systems, leading to diversified carbocyclic and heterocyclic frameworks with high chemoselectivities. The use of such cycloisomerizations is reflected by a facile access to the cores of natural pallidol and gibberic acid.
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Lin et al. (2008) studied this question.
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