Formal total synthesis of camptothecin via ring-closing metathesis strategy
作者:Subhash P. Chavan、K. Pasupathy、M.S. Venkatraman、Ramesh R. Kale
DOI:10.1016/j.tetlet.2004.07.101
日期:2004.9
A formaltotalsynthesis of camptothecin 1 is presented. The key steps include construction of the D-ring of camptothecin featuring an efficient ring-closing metathesis (RCM) reaction and the subsequent Michael addition of nitropropane across the double bond of the dihydropyridone 3.
A practical and efficient synthesis of (±)- camptothecin
作者:Subhash P. Chavan、M.S. Venkatraman
DOI:10.1016/s0040-4039(98)01415-4
日期:1998.9
A practical and efficient synthesis of (+/-)-camptothecin from glycine via an intramolecular Michael addition is described. (C) 1998 Elsevier Science Ltd. All rights reserved.
Formal synthesis of (±)-camptothecin via tricyclic lactone as key synthon
作者:Subhash P. Chavan、Abasaheb N. Dhawane、Uttam R. Kalkote
DOI:10.1016/j.tetlet.2010.04.019
日期:2010.6
Formal synthesis of (+/-)-camptothecin via CDE tricyclic lactone employing tandem Michael addition, Dieckmann condensation and addition-elimination reaction as key steps starting from glycinate is described. (C) 2010 Elsevier Ltd. All rights reserved.