Aldose reductase (AR) is a crucial enzyme of the polyol pathway through which glucose is metabolized under conditions of hyperglycemia related to diabetes. A series of novel acetic acid derivatives containing quinazolin-4(3H)-one ring (1–22) was synthesized and tested for in vitro AR inhibitory effect. All the target compounds exhibited nanomolar activity against the target enzyme, and all compounds displayed higher activity as compared to the reference drug epalrestat. Among them, Compound 19, named 2-(4-[(2-[(4-methylpiperazin-1-yl)methyl]-4-oxoquinazolin-3(4H)-ylimino)methyl]phenoxy)acetic acid, displayed the strongest inhibitory effect with a K_I value of 61.20 ± 10.18 nM. Additionally, these compounds were investigated for activity against L929, nontumoral fibroblast cells, and MCF-7, breast cancer cells using the MTT assay. Compounds 16 and 19 showed lower toxicity against the normal L929 cells. The synthesized compounds’ (1–22) absorption, distribution, metabolism, and excretion properties were also evaluated. Molecular docking simulations were used to look into the possible binding mechanisms of these inhibitors against AR.

中文翻译：

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含有喹唑啉-4(3H)-一环的新型乙酸衍生物：有效醛糖还原酶抑制剂的合成、体外和计算机评估

醛糖还原酶（AR）是多元醇途径中的关键酶，在与糖尿病相关的高血糖条件下，葡萄糖通过该途径代谢。合成了一系列含有喹唑啉-4(3 H )-单环( 1-22 )的新型乙酸衍生物，并测试了其体外AR抑制作用。所有目标化合物均表现出针对目标酶的纳摩尔活性，并且与参比药物依帕司他相比，所有化合物均表现出更高的活性。其中，化合物19，命名为2-(4-[(2-[(4-甲基哌嗪-1-基)甲基]-4-氧代喹唑啉-3(4H ) -亚氨基)甲基]苯氧基)乙酸，显示出抑制作用最强，K _I值为 61.20 ± 10.18 nM。此外，还使用 ​​MTT 测定研究了这些化合物针对 L929（非肿瘤成纤维细胞）和 MCF-7（乳腺癌细胞）的活性。化合物16和19对正常L929细胞显示出较低的毒性。还评估了合成化合物（1-22）的吸收、分布、代谢和排泄特性。分子对接模拟被用来研究这些抑制剂对抗 AR 的可能结合机制。