1-deisopropenyl-1-acetoxy-A-norpaclitaxel, 1-deisopropenyl-A-norpaclitaxel,
1-deisopropenyl-1-acetyl-8,9-oxido-A-norpaclitaxel, and A-nor-C-norpaclita
xel were synthesized. The biological activities of these analogs were deter
mined, and structure-activity relationships for the C-1 position are sugges
ted. (C) 1999 Elsevier Science Ltd. All rights reserved.