Ring closing metathesis strategies towards functionalised 1,7-annulated 4,6-dimethoxyindoles

A ring closing metathesis approach has been used to prepare a novel range of indoles 1,7-annulated with nitromethyl and lactone functionalised medium-sized rings. Initial studies into the preparation of lactam functionalised rings are also discussed. (C) 2011 Elsevier Ltd. All rights reserved.