Illudalic acid as a potential LAR inhibitor: Synthesis, SAR, and preliminary studies on the mechanism of action
摘要:
A novel synthesis of the human leukocyte common antigen-related (LAR) phosphatase inhibitor, illudalic acid, has been achieved by a route more amenable to structure modi. cations. A series of simpler analogues of illudalic acid was synthesized and evaluated for potency in inhibiting LAR. The structure -activity relationship (SAR) study has shown that the 5-formyl group and the hemi-acetal lactone are crucial for effective inhibition of LAR activity, and are the key pharmacophores of illudalic acid. The fused dimethylcyclopentene ring moiety evidently helps to enhance the potency of illudalic acid against LAR. A preliminary study of the mechanism of action of illudalic acid against LAR was conducted using electrospray ionization mass spectrometry (ESI-MS) and molecular docking techniques. The results are in full agreement with the described mechanism. (C) 2008 Elsevier Ltd. All rights reserved.
seven novelsulfamides. Human carbonic anhydrase (hCA) isoenzymes I and II (hCA I and hCA II) were purified from fresh human blood erythrocytes with one‐step affinity chromatography on Sepharose 4B‐tyrosine‐sulfanilamide. The inhibitory properties of the novelsulfamides on both isoenzymes were determined using the esterase activity with 4‐nitrophenyl acetate (NPA) as substrate. The tested novel sulfamides
三个 1-氨基茚满、四个苯胺和 BnOH 或 t-BuOH 与氯磺酰基异氰酸酯反应得到氨磺酰基氨基甲酸酯。Pd-C 催化氨基甲酸酯的氢解反应或用 CF3CO2H 对氨基甲酸酯的 Boc 基团进行脱保护,得到了七种新型磺酰胺。人碳酸酐酶 (hCA) 同工酶 I 和 II(hCA I 和 hCA II)是在琼脂糖凝胶 4B-酪氨酸-磺胺上通过一步亲和层析从新鲜人血红细胞中纯化的。使用酯酶活性以 4-硝基苯乙酸酯 (NPA) 作为底物,确定了新型磺酰胺对两种同工酶的抑制特性。经测试的源自 1-氨基茚满和苯胺的新型磺酰胺在纳摩尔范围内有效地抑制了 hCA I 和 II。在这些化合物中,
Illudalic acid as a potential LAR inhibitor: Synthesis, SAR, and preliminary studies on the mechanism of action
A novel synthesis of the human leukocyte common antigen-related (LAR) phosphatase inhibitor, illudalic acid, has been achieved by a route more amenable to structure modi. cations. A series of simpler analogues of illudalic acid was synthesized and evaluated for potency in inhibiting LAR. The structure -activity relationship (SAR) study has shown that the 5-formyl group and the hemi-acetal lactone are crucial for effective inhibition of LAR activity, and are the key pharmacophores of illudalic acid. The fused dimethylcyclopentene ring moiety evidently helps to enhance the potency of illudalic acid against LAR. A preliminary study of the mechanism of action of illudalic acid against LAR was conducted using electrospray ionization mass spectrometry (ESI-MS) and molecular docking techniques. The results are in full agreement with the described mechanism. (C) 2008 Elsevier Ltd. All rights reserved.