relation: http://d-scholarship-dev.library.pitt.edu/20443/ title: Cascade 4+1 radical annulations of 2,6-disubstituted phenyl isonitriles with N-propargyl-6-iodopyridones: Scope, mechanism and regioselective synthesis of 7,9-disubstituted camptothecin analogs creator: Du, W creator: Curran, DP description: The reaction of o,o′-dialkyl-substituted aryl isonitriles with N-propargyl-6-iodopyridones provides 11H-indolizino[1,2-b]quinolin-9-ones with significant regioselectivity in favor of the more crowded product. The usefulness of the method is illustrated with a regioselective synthesis of (20S)-7-trimethylsilyl-9-isopropyl camptothecin. date: 2003-01-01 type: Article type: PeerReviewed format: text/plain language: en rights: attached identifier: http://d-scholarship-dev.library.pitt.edu/20443/1/licence.txt identifier: Du, W and Curran, DP (2003) Cascade 4+1 radical annulations of 2,6-disubstituted phenyl isonitriles with N-propargyl-6-iodopyridones: Scope, mechanism and regioselective synthesis of 7,9-disubstituted camptothecin analogs. Synlett (9 SPEC). 1299 - 1302. ISSN 0936-5214 relation: 10.1055/s-2003-40327