Synthesis of New Cytotoxic Aminoanthraquinone Derivatives via Nucleophilic Substitution Reactions
作者:Siti Nor、Mohd Sukari、Saripah Azziz、Wong Fah、Hasimah Alimon、Siti Juhan
DOI:10.3390/molecules18078046
日期:——
Aminoanthraquinones were successfully synthesized via two reaction steps. 1,4-Dihydroxyanthraquinone (1) was first subjected to methylation, reduction and acylation to give an excellent yield of anthracene-1,4-dione (3), 1,4-dimethoxyanthracene-9,10-dione (5) and 9,10-dioxo-9,10-dihydroanthracene-1,4-diyl diacetate (7). Treatment of 1, 3, 5 and 7 with BuNH2 in the presence of PhI(OAc)2 as catalyst produced seven aminoanthraquinone derivatives 1a, b, 3a, and 5a–d. Amination of 3 and 5 afforded three new aminoanthraquinones, namely 2-(butylamino)anthracene-1,4-dione (3a), 2-(butylamino)anthracene-9,10-dione (5a) and 2,3-(dibutylamino)anthracene-9,10-dione (5b). All newly synthesised aminoanthraquinones were examined for their cytotoxic activity against MCF-7 (estrogen receptor positive human breast) and Hep-G2 (human hepatocellular liver carcinoma) cancer cells using MTT assay. Aminoanthraquinones 3a, 5a and 5b exhibited strong cytotoxicity towards both cancer cell lines (IC50 1.1–13.0 µg/mL).
通过两步反应步骤,成功合成了氨基蒽醌。首先将1,4-二羟基蒽醌(1)进行甲基化、还原和酰化,得到了高产率的蒽-1,4-二酮(3)、1,4-二甲氧基蒽-9,10-二酮(5)和9,10-二氧代-9,10-二氢蒽-1,4-二基二乙酸酯(7)。将1、3、5和7与BuNH2反应,在PhI(OAc)2催化剂存在下,生成了七个氨基蒽醌衍生物1a、b、3a和5a–d。对3和5的胺化反应得到了三个新的氨基蒽醌,即2-(正丁氨基)蒽-1,4-二酮(3a)、2-(正丁氨基)蒽-9,10-二酮(5a)和2,3-(二正丁氨基)蒽-9,10-二酮(5b)。所有新合成的氨基蒽醌都通过MTT assay检测了它们对MCF-7(雌激素受体阳性人乳腺癌)和Hep-G2(人肝细胞肝癌)癌细胞的细胞毒活性。氨基蒽醌3a、5a和5b对这两种癌细胞系表现出强烈的细胞毒性(IC50为1.1–13.0 µg/mL)。