European Journal of Medicinal Chemistry
Papers 12388
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Abstract Overexpression of aldehyde dehydrogenase 1A1 (ALDH1A1) is associated with the occurrence and development of obesity and insulin resistance. Herein, a series of coumarin-based ALDH1A1 inhibitors were designed, synthesized and evaluated. Among them, compounds 10, 14 and 26 exhibited potent inhibitory activity against ALDH1A1 and high selectivity over ALDH1A2, ALDH1A3, ALDH2 and ALDH3A1. Optimized compound 10 showed markedly improved pharmacokinetic characters and ADME profiles comparing t...
Abstract Histone deacetylase 6 (HDAC6) has gained popular attention for its wide participation in various pathological process recently. In this paper, a series of novel derivatives containing 2, 5-diketopiperazine (DKP) skeleton were developed as potent selective HDAC6 inhibitors (sHDAC6is). Most of these compounds exhibited low nanomolar IC50 values toward HDAC6, and the best compound was 21b (IC50 = 0.73 nM) which had 144–10941-fold selectivity over other HDAC isoforms. Western blot assay fur...
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Abstract A series of methyl β-carboline carboxylates (2a-g) and of imide-β-carboline derivatives containing the phthalimide (4a-g), maleimide (5b, g) and succinimide (6b, e, g) moiety were synthesized, and evaluated for their activity against Mycobacterium tuberculosis H37Rv. The most active β-carboline derivatives against the reference strain were assayed for their cytotoxicity and the activity against resistant M. tuberculosis clinical isolates. Farther, structure-activity relationship (SAR) s...
Abstract A combination therapeutic regimen via introducing tryptophan 2,3-dioxygenase inhibitors into microtubule inhibitors was performed and evaluated for their antitumor activity. Thereinto, HT2, composed of combretastatin A-4 (CA-4) and tryptophan-2,3-dioxygenase (TDO) inhibitor by a linker, displayed the most potent activity with 10-fold higher than its parent CA-4 against HepG2, A549 and HCT-116 cancer cell lines. Mechanism studies suggested that HT2 inhibited tubulin polymerization and ce...
Abstract A series of new benzothieno[3,2-d]pyrimidine derivatives were designed and synthesized. The National Cancer Institute (NCI, USA) evaluated all synthesized compounds against 60 human tumor cell lines. Most of the compounds showed good cytotoxicity against MCF-7 breast cancer cell line and UO-31 renal cancer cell line (growth inhibitory range: 17.88%–68.65%). IC50 of twelve most active compounds was determined against MCF-7 and UO-31 cell lines. Compounds 7, 10, 13, 16 and 17 proved a pro...
Abstract Hybrid chemical compounds formed by conjugation of two or more bioactive molecules have shown wide variety of applications in biology, microelectronics as well as material sciences. In particular, the conjugates of steroid framework are known to have broad biological activity profile due to their ability to penetrate the biomembranes and bind to specific hormone receptors. Among the various conjugates of steroids, Steroid Amino Acid Conjugates (SAACs) are attractive because of the possi...
Abstract Interleukin-2 inducible T-cell kinase (ITK), a member of the Tec family of tyrosine kinases, plays an important role in T cell signaling downstream of the T-cell receptor (TCR). Herein we report the discovery of a series of indolylindazole based covalent ITK inhibitors with nanomolar inhibitory potency against ITK, good kinase selectivity and potent inhibition of the phosphorylation of PLCγ1 and ERK1/2 in living cells. A computational study provided insight into the interactions between...
Abstract Threonyl-tRNA synthetase (ThrRS) is a key member of the aminoacyl-tRNA synthetase (aaRS) family that plays essential roles in protein biosynthesis, and ThrRS inhibitors have potential in the therapy of multiple diseases, such as microbial infections and cancers. Based on a unique tRNA-amino acid dual-site inhibitory mechanism identified recently with the herb-derived prolyl-tRNA synthetase (ProRS) inhibitor halofuginone (HF), a series of compounds have been designed and synthesized by e...
Abstract Accumulation of tau protein aggregation plays a crucial role in neurodegenerative diseases, such as Alzheimer's disease (AD). Uncontrollable neuroinflammation and tau pathology form a vicious circle that further aggravates AD progression. Herein, we reported the synthesis of usnic acid derivatives and evaluation of their inhibitory activities against tau-aggregation and neuroinflammation. The inhibitory activity of the derivatives against the self-fibrillation of the hexapeptide AcPHF6 ...
Abstract In order to produce an effective and multi-targeted clinical drug that could prevent progressive neurodegeneration, a series of diosgenin carbamate derivatives were designed, synthesized and tested for their anti-inflammatory, antioxidant and anti-Aβ activities. The results demonstrated that compound M15 was the most promising derivative against inflammatory (NO inhibition 22.7 ± 2.2%,10 μM) and cellular damage induced by H2O2 (SH-SY5Y cell protection = 75.3 ± 3.4%, 10 μM) or Aβ (astroc...
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