

SYNTHESIS VIA THE MANNICH REACTION AND BIOLOGICAL ACTIVITY OF NOVEL FLUORINATED CAMPTOTHECIN DERIVATIVES

Abstract
Two series of fluorinated camptothecin derivatives had been designed and synthesized via the Mannich reaction. The hexacyclic fluorinated camptothecin derivatives were found to be more active. (9S,10S)-2-Cyclopropyl-9-ethyl-10-fluoro-9-hydroxy-2,3,9,10,12,15-hexahydro-1H,13H-[1,3]oxazino[5,6-f]pyrano[3',4':6,7]indolizino[1,2-b]quinolin-13-one showed potent antitumor activity against A549 and T24 cell lines with effective topoisomerase I inhibitory activity.
Keywords
fluorinated camptothecin; antitumor activity; Mannich reaction; natural products.
Latvian Institute of Organic Synthesis - Aizkraukles iela, 21, Riga, LV-1006, Latvia - hgs@osi.lv