Synthesis of (±)-camptothecin using a [3+2] nitrone cycloaddition to construct the CDE ring moiety
作者:Jurong Yu、Jeffrey DePue、David Kronenthal
DOI:10.1016/j.tetlet.2004.08.025
日期:2004.9
A novel synthesis to camptothecin is described. A Friedlander condensation of o-aminobenzaldehye 2 with tricylclic ketone 3 affords camptothecin after further elaboration. Tricyclic ketone 3 is prepared via a route employing a [3+2] nitrone cyclo-addition and an intramolecular Knoevenagel condensation. (C) 2004 Elsevier Ltd. All rights reserved.
HERTZBERG, ROBERT P.;CARANFA, MARY JO.;HOLDEN, KENNETH G.;JAKAS, DALIA R.+, J. MED. CHEM., 32,(1989) N, C. 715-720
作者:HERTZBERG, ROBERT P.、CARANFA, MARY JO.、HOLDEN, KENNETH G.、JAKAS, DALIA R.+