Download full text in PDF Opens in a new window. Article suggestions will be shown in a dialog on return to ScienceDirect. ... Please enable JavaScript to use all the features on this page. ... A general Dieckmann/ring expansion approach to fused [1,2-a]indole systems is reported. This approach has allowed the synthesis of a large variety of substituted systems required for the preparation of a series of potent and selective inhibitors of Protein Kinase C.