60639-52-3Relevant articles and documents
Discovery of selective fragment-sized immunoproteasome inhibitors
Kollár, Levente,Gobec, Martina,Szilágyi, Bence,Proj, Matic,Knez, Damijan,ábrányi-Balogh, Péter,Petri, László,Imre, Tímea,Bajusz, Dávid,Ferenczy, Gy?rgy G.,Gobec, Stanislav,Keser?, Gy?rgy M.,Sosi?, Izidor
, (2021/04/23)
Proteasomes contribute to maintaining protein homeostasis and their inhibition is beneficial in certain types of cancer and in autoimmune diseases. However, the inhibition of the proteasomes in healthy cells leads to unwanted side-effects and significant effort has been made to identify inhibitors specific for the immunoproteasome, especially to treat diseases which manifest increased levels and activity of this proteasome isoform. Here, we report our efforts to discover fragment-sized inhibitors of the human immunoproteasome. The screening of an in-house library of structurally diverse fragments resulted in the identification of benzo[d]oxazole-2(3H)-thiones, benzo[d]thiazole-2(3H)-thiones, benzo[d]imidazole-2(3H)-thiones, and 1-methylbenzo[d]imidazole-2(3H)-thiones (with a general term benzoXazole-2(3H)-thiones) as inhibitors of the chymotrypsin-like (β5i) subunit of the immunoproteasome. A subsequent structure-activity relationship study provided us with an insight regarding growing vectors. Binding to the β5i subunit was shown and selectivity against the β5 subunit of the constitutive proteasome was determined. Thorough characterization of these compounds suggested that they inhibit the immunoproteasome by forming a disulfide bond with the Cys48 available specifically in the β5i active site. To obtain fragments with biologically more tractable covalent interactions, we performed a warhead scan, which yielded benzoXazole-2-carbonitriles as promising starting points for the development of selective immunoproteasome inhibitors with non-peptidic scaffolds.
Discovery of a 7-arylaminobenzimidazole series as novel CRF1receptor antagonists
Mochizuki, Michiyo,Kori, Masakuni,Kono, Mitsunori,Yano, Takahiko,Sako, Yuu,Tanaka, Maiko,Kanzaki, Naoyuki,Gyorkos, Albert C.,Corrette, Christopher P.,Aso, Kazuyoshi
, p. 4675 - 4691 (2016/09/13)
A promising lead compound 1 of a benzimidazole series has been identified as a corticotropin-releasing factor 1 (CRF1) receptor antagonist. In this study, we focused on replacement of a 7-alkylamino group of 1, predicted to occupy a large lipophilic pocket of a CRF1receptor, with an aryl group. During the course of this examination, we established new synthetic approaches to 2,7-diarylaminobenzimidazoles. The novel synthesis of 7-arylaminobenzimidazoles culminated in the identification of compounds exhibiting inhibitory activities comparable to the alkyl analog 1. A representative compound, p-methoxyanilino analog 16g, showed potent CRF binding inhibitory activity against a human CRF1receptor and human CRF1receptor antagonistic activity (IC50?=?27?nM, 56?nM, respectively). This compound exhibited ex vivo125I-Tyr0(125I-CRF) binding inhibitory activity in mouse frontal cortex, olfactory bulb, and pituitary gland at 20?mg/kg after oral administration. In this report, we discuss the structure–activity-relationship of these 7-arylamino-1H-benzimidazoles and their synthetic method.
NITROGEN-CONTAINING FUSED HETEROCYCLIC COMPOUNDS
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Page/Page column 138-139, (2010/02/11)
There is provided a CRF receptor antagonist comprising a compound of the formula (I): wherein, ring A is a 5-membered ring represented by the formula (A'): wherein X is a carbon and X is an oxygen, a sulfur or - NR -,or formula (A"): wherein X is a nitrogen and R is an optionally substituted hydrocarbyl, Ris an amino substituted by two optionally substituted hydrocarbyl groups, Ris an phenyl, Y is CR or a nitrogen, Y is CRor a nitrogen and Yis CRor a nitrogen, provided that one or less of Y, Y, and Y is nitrogen, W is a bond, -(CH2)n-, and Z is a bond, -NR -,etc.; or a salt thereof or a prodrug thereof.
