Synthesis of 2- and 7- Substituted C19 Steroids Having a 1,4,6-Triene or 1,4-Diene Structure and Their Cytotoxic Effects on T47D and MDA-MB231 Breast Cancer Cells
作者:Minwoo Kim、Eunsook Ma
DOI:10.3390/molecules15064408
日期:——
2-Chloro-, 2-bromo- and 2-azido-1,4,6-androstatriene-3,17-diones were synthesized from 1α,2α-epoxy-4,6-androstadiene-3,17-dione (2) using HCl, HBr and NaN3, respectively. Compound 2 was also reacted with NaCN to give 2-cyano-1,4,6-androstatriene-3,17-dione (5) and 2β-cyano-1α-hydroxy-4,6-androstadiene-3,17-dione (6). 6α,7α-Epoxy-1,4-androstadiene-3,17-dione (8) was reacted with HCl, HBr and NaN3 to form the corresponding 7β-chloro-, 7β-bromo- and 7β-azido-6α-hydroxy-1,4-androstadiene-3,17-diones. The cytotoxic activity of these compounds towards T47D (estrogen-dependent) and MDA-MB231 (estrogen-independent) breast cancer cell lines was evaluated. The 6α-hydroxy-7β-substituted analogs were more active than the 2-substituted analogs on both cell lines. Compound 2 showed the highest selective activity against the T47D (IC50 7.1 μM) cell line and 5 showed good cytotoxic activity on MDA-MB231 (IC50 18.5 μM) cell line, respectively. The 6α,7α-epoxy analog 8 also showed high cytotoxic activity on both cell lines (IC50 17.3 μM on T47D and IC50 26.9 μM on MDA-MB231).
用 HCl、HBr 和 NaN3 分别从 1α,2α-环氧-4,6-雄甾二烯-3,17-二酮 (2) 合成 2-氯、2-溴和 2-叠氮-1,4,6-雄甾二烯-3,17-二酮。化合物 2 还与 NaCN 反应,得到 2-氰基-1,4,6-雄甾二烯-3,17-二酮 (5) 和 2β-氰基-1α-羟基-4,6-雄甾二烯-3,17-二酮 (6)。6α,7α-环氧-1,4-雄甾二烯-3,17-二酮(8)与 HCl、HBr 和 NaN3 反应生成相应的 7β-氯、7β-溴和 7β-叠氮-6α-羟基-1,4-雄甾二烯-3,17-二酮。评估了这些化合物对 T47D(雌激素依赖型)和 MDA-MB231(雌激素非依赖型)乳腺癌细胞系的细胞毒活性。与 2-取代类似物相比,6α-羟基-7β-取代类似物对这两种细胞株的活性更高。化合物 2 对 T47D(IC50 为 7.1 μM)细胞系的选择性活性最高,而化合物 5 则分别对 MDA-MB231 (IC50 为 18.5 μM)细胞系表现出良好的细胞毒性活性。6α,7α-环氧类似物 8 对这两种细胞系也显示出较高的细胞毒性活性(对 T47D 的 IC50 为 17.3 μM,对 MDA-MB231 的 IC50 为 26.9 μM)。