Synthesis of novel taxol analogs and evaluation of their biological activities
摘要:
Two new taxol analogs 6 and 10 have been prepared from baccatin III (1) and taxol (7a), respectively. Like taxol, both compounds were found to promote microtubule formation and stabilization, although they were less active than taxol. Both 6 and 10 exhibited cytotoxicity against J774.2 cells; 6 was similar to 60-fold less active and 10 was similar to 15-fold less active. (C) 1997 Elsevier Science Ltd.
Synthesis, structure elucidation and biological evaluation of C-norpaclitaxel
作者:Xian Liang、David G.I. Kingston、Byron H. Long、Craig A. Fairchild、Kathy A. Johnston
DOI:10.1016/0040-4039(95)01650-7
日期:1995.10
2′-TBDMS-6α-hydroxy-7-epipaclitaxel (1) with lead tetraacetate furnished 2′-TBDMS-C-norpaclitaxel (2) and the C-seco compound 3. Deprotection of 2 with pyridinium hydrofluoride yielded Cnorpaclitaxel (4). C-norpaclitaxel (4) is less effective at promoting the assembly of microtubules and less cytotoxic towards HCT116 cells than paclitaxel.
Paclitaxel analogs modified in ring C: Synthesis and biological evaluation
作者:Xian Liang、David G.I. Kingston、Byron H. Long、Craig A. Fairchild、Kathy A. Johnston
DOI:10.1016/s0040-4020(97)00074-4
日期:1997.3
Lead tetracetate oxidation of 6 alpha-hydroxy-7-epi-paclitaxel leads to C-nor-paclitaxel and C-seco-paclitaxel derivatives. Tetrapropylammonium permthenate (TPAP) oxidation of a 6 alpha-hydroxy-7-epi-paclitaxel derivative leads to a 6-formyl-C-nor-paclitaxel derivative. Reaction of a 6 alpha-O-trifluoromethanesulfonyl-7-epi-paclitaxel derivative with DMAP yields a 20-O-acetyl-4-deacetyl-5,6-dehydro-6-formyl-C-nor-paclitaxel derivative. C-nor-paclitaxel analogs are less active than paclitaxel. (C) 1997 Elsevier Science Ltd.
Synthesis of novel taxol analogs and evaluation of their biological activities
作者:Paul A. Wender、Daesung Lee、Tapan K. Lal、Susan B. Horwitz、Srinivasa Rao
DOI:10.1016/s0960-894x(97)00337-5
日期:1997.7
Two new taxol analogs 6 and 10 have been prepared from baccatin III (1) and taxol (7a), respectively. Like taxol, both compounds were found to promote microtubule formation and stabilization, although they were less active than taxol. Both 6 and 10 exhibited cytotoxicity against J774.2 cells; 6 was similar to 60-fold less active and 10 was similar to 15-fold less active. (C) 1997 Elsevier Science Ltd.