A series of new carbohydrate-based sulphonamide derivatives were designed, synthesised by employing the so-call 'sugar-tail' approach. The compounds were evaluated in vitro against a panel of CAs. Compared to their parent compound p-sulfamoylbenzoic acid, these compounds showed nearly 100-fold improvement in their binding affinities against hCA II in vitro. All of compounds showed great water solubility and the pH value of their water solutions of compounds is 7.0. Such properties are advantageous to make them much less irritating to the eye when applied topical glaucomatous drugs, compared to the relatively highly acidic dorzolamide preparations (pH 5.5). Notably, compounds 7d, 7 g, 7 h demonstrated to topically lower intraocular pressure (IOP) in glaucomatous animals better than brinzolamide when applied as a 1% solution directly into the eye. Low cytotoxicity on human cornea epithelial cell was observed in the tested concentrations by the MTT assay.

中文翻译：

---

通过选择性抑制碳酸酐酶II设计，合成和生物评估作为局部抗青光眼剂的基于碳水化合物的磺酰胺衍生物。

设计了一系列新的基于碳水化合物的磺酰胺衍生物，通过使用所谓的“糖尾”方法合成。针对一组CA对化合物进行了体外评估。与它们的母体化合物对氨磺酰基苯甲酸相比，这些化合物在体外对hCA II的结合亲和力提高了近100倍。所有化合物均显示出良好的水溶性，并且其化合物水溶液的pH值为7.0。与使用相对较高酸性的多唑胺制剂（pH 5.5）相比，使用局部青光眼药物时，此类特性有利于使它们对眼睛的刺激性大大降低。值得注意的是，化合物7d，7 g，当直接以1％的溶液形式施用到眼中时，7 h证明比青霉酰胺更好地降低了青光眼动物的眼内压（IOP）。通过MTT测定法以所测试的浓度观察到对人角膜上皮细胞的低细胞毒性。