Total synthesis of phenanthroindolizidine alkaloids (±)-antofine, (±)-deoxypergularinine, and their dehydro congeners and evaluation of their cytotoxic activity
作者:Chung-Ren Su、Amooru G. Damu、Po-Cheng Chiang、Kenneth F. Bastow、Susan L. Morris-Natschke、Kuo-Hsiung Lee、Tian-Shung Wu
DOI:10.1016/j.bmc.2008.04.032
日期:2008.6
Due to their limited natural abundance and significant biochemical effects, we synthesized the alkaloids (+/-)-antofine (1a), (+/-)-deoxypergularinine (1b), and their dehydro congeners (2 and 3) starting from the corresponding phenanthrene-9-carboxaldehydes. We also evaluated their in vitro cytotoxic activity. Compounds 1a and 1b showed significant potency against various human tumor cell lines, including
由于其有限的天然丰度和显着的生化效应,我们从相应的合成生物碱 (+/-)-安托芬 (1a)、(+/-)-脱氧泛碱 (1b) 及其脱氢同源物 (2 和 3) 开始菲-9-甲醛。我们还评估了它们的体外细胞毒活性。化合物 1a 和 1b 显示出对各种人类肿瘤细胞系的显着效力,包括一种耐药变体,EC(50) 值范围从 0.16 到 16ng/mL。还确定了这些生物碱及其一些合成中间体的构效关系。菲和吲哚里西啶这两个主要部分之间的非平面结构在菲并吲哚里西啶的细胞毒活性中起着至关重要的作用。增加吲哚里西啶部分的平面度和刚性显着降低了效力。