Design, Synthesis, and Biological Activity of New N-(Phenylmethyl)-benzoxazol-2-thiones as Macrophage Migration Inhibitory Factor (MIF) Antagonists: Efficacies in Experimental Pulmonary Hypertension
摘要:
Macrophage migration inhibitory factor (MIF) is a key pleiotropic mediator and a promising therapeutic target in cancer as well as in several inflammatory and cardiovascular diseases including pulmonary arterial hypertension (PAH). Here, a novel series of N-(phenylmethyl)-benzoxazol-2-thiones 5-32 designed to target the MIF tautomerase active site was synthesized and evaluated for its effects on cell survival. Investigation of structure-activity relationship (SAR) particularly at the 5-position of the benzoxazole core led to the identification of 31 that potently inhibits cell survival in DU-145 prostate cancer cells and pulmonary endothelial cells derived from patients with idiopathic PAH (iPAH-ECs), two cell lines for which survival is MIF-dependent. Molecular docking studies helped to interpret initial SAR related to MIF tautomerase inhibition and propose preferred binding mode for 31 within the MIF tautomerase active site. Interestingly, daily treatment with 31 started 2 weeks after a subcutaneous monocrotaline injection regressed established pulmonary hypertension in rats.
Compounds of Formula (I′), and the use of the compounds of Formula (I′) as inhibitors of macrophage migration inhibitory factor (MIF). The use of compounds of Formula (I′) or pharmaceutical compositions thereof and method of using them, for treating disorders, diseases or conditions related to MIF.
We report a H3PO3/I2 mediated formation of N-benzyl benzo heterocyclic ketones from the reaction of benzo heterocyclic compounds with aromatic aldehydes or benzyl alcohol derivatives under metal-free conditions in one-pot. For the first time, aromatic aldehydes were used as benzylated reagents to synthesize benzo heterocyclic ketones in the presence of K2CO3. Control experiments indicated that the
我们报告了 H 3 PO 3 /I 2介导的N-苄基苯并杂环酮的形成,该反应由苯并杂环化合物与芳香醛或苯甲醇衍生物在无金属条件下在一锅中反应。首次以芳香醛为苄基化试剂在K 2 CO 3存在下合成苯并杂环酮。对照实验表明羰基氧最有可能来源于K 2 CO 3。H 3 PO 3还起到促进剂和氢源的双重作用。这种新方法具有底物范围广、成本低、条件简单等特点。
Asymmetric Dearomatization of Phenols via Ligand‐Enabled Cooperative Gold Catalysis
作者:Yongliang Zhang、Ke Zhao、Xinyi Li、Carlos D. Quintanilla、Liming Zhang
DOI:10.1002/anie.202309256
日期:2023.9.18
Asymmetric dearomatization of phenols was achieved by employing chiral bifunctional phosphine ligands in cooperative goldcatalysis. This transformation demonstrated a remarkable generality, affording the desired product with high yields (up to 99 %) and excellent enantioselectivities (ee up to 99 %).