Synthesis and anticancer activity of focused compound libraries from the natural product lead, oroidin
作者:Lauren Dyson、Anthony D. Wright、Kelly A. Young、Jennette A. Sakoff、Adam McCluskey
DOI:10.1016/j.bmc.2014.01.021
日期:2014.3
Oroidin (1), (E)-N-(3-(2-amino-1H-imidazol-4-yl) allyl)-4,5-dibromo-1H-pyrrole-2-carboxamide, is a pyrrole alkaloid isolated from the marine sponge Agelas oroides. Routine screening in a panel of twelve cancer cell lines revealed 1 to be poorly cytotoxic with the 50% growth inhibition concentration (GI(50)) of 42 mu M in MCF-7 (breast) cells and 24 mu M in A2780 (ovarian) cells and >50 mu M in all other cell lines tested. The development of eight focused libraries comprising thirty compounds total identified N-(biphenyl-4-ylmethyl)-1H-pyrrole-2-carboxamide (4l), N-benzyl-4,5-dibromo-1H-pyrrole-2-carboxamide (5a) and N-(biphenyl-4-ylmethyl)-4,5-dibromo-1H-pyrrole-2-carboxamide (5l) as potent inhibitors of cell growth in our panel of cell lines. Of these compounds GI(50) values of <5 mu M were observed with 4l against HT29 (colon) and SW480 (colon); 5a against HT29; and 5l against HT29, SW480, MCF-7, A431 (skin), Du145 (prostate), BE2-C (neuroblastoma) and MIA (pancreas) cell lines. As a cancer class, colon cancer appears to be more sensitive to the oroidin series of compounds, with analogue 5l being the most active. (C) 2014 Elsevier Ltd. All rights reserved.