AbstractBACKGROUNDPlant diseases infected by pathogenic fungi have a devastating effect on global agricultural and food industry yields. The development of novel, environmentally friendly, and efficient fungicides is an important technique for preventing and combatting phytopathogenic fungi.RESULTSHerein, 99 thiochroman‐based derivatives containing hydroxyl, sulfoxide, sulfone, carbonyl, double bond, amino, imine, oxime, oxime ester, and amide moieties were synthesized. The antifungal activities of the target compounds against ten typical phytopathogenic fungi were also investigated. The bioassay results illustrated that most of the target compounds exhibited moderate to excellent antifungal effects against the tested fungi in vitro. Among these, thiochroman‐oxime derivatives (12a–12m) exerted a promising inhibition effect, especially against Fusarium solani, Fusarium graminearum, Valsa mali, and Botrytis cinerea strains. Furthermore, the compounds 12f and 12g markedly suppressed the spore germination germ and tube growth. At the same time, they exerted excellent protective effects against potatoes infected by F. solani, making them superior to commercial fungicides Hymexazol and Chlorothalonil. Notably, the compounds 12d and 12f also showed excellent protective effects against cherry tomatoes infected by B. cinerea. Further mechanistic studies revealed that compound 12f exerted an antifungal effect by overtly altering the mycelium structure and remarkably increasing cell membrane permeability. Fortunately, the excellent bioactive compounds showed good safety against human hepatic cell lines (WRL‐68). The preliminary structure–activity relationship analysis revealed that the introduction of hydroxyl or oxime fragments at the thiopyran ring might be significantly beneficial to antifungal activity.CONCLUSIONThis study provides thiochroman compounds that can be used in the development of novel botanical fungicides for the management of phytopathogenic fungi. © 2024 Society of Chemical Industry.

2024-12-01·Bioorganic Chemistry

Discovery of novel 20S proteasome subunit β5 PROTAC degraders as potential therapeutics for pharyngeal carcinoma and Bortezomib-resistant multiple myeloma

Article

作者: Li, Minyong ; Du, Lupei ; Zhang, Shuxin ; Li, Zhenzhen ; Ma, Zhao ; Wang, Shumei ; Guo, Shuxian ; Ma, Siyue

Resistance to proteasome inhibitors like Bortezomib is a major challenge in the treatment of multiple myeloma (MM). Proteolysis targeting chimeras (PROTACs), an emerging therapeutic approach that induces selective degradation of target proteins, offer a promising solution to overcome drug resistance. In this study, we designed and synthesized novel small-molecule PROTACs that induce 20S proteasome subunit β5 degradation as a strategy to overcome Bortezomib resistance. These 20S proteasome subunit β5 PROTACs demonstrated considerable binding affinity to 20S proteasome subunit β5 and cereblon (CRBN), effectively induced 20S proteasome subunit β5 degradation, and exhibited potent antiproliferative activity against a panel of cancer cell lines. Notably, PROTACs 12f and 14 displayed robust antitumor effects against both the pharyngeal carcinoma cell line FaDu and the Bortezomib-resistant MM cell line KM3/BTZ in vitro and in vivo with excellent safety profiles. Taken together, our findings highlight the potential of PROTACs 12f and 14 as novel 20S proteasome subunit β5-degrading agents for the treatment of pharyngeal carcinoma and overcoming Bortezomib resistance in MM.

2001-02-01·Journal of Medicinal Chemistry1区 · 医学

New 1-Aryl-3-(4-arylpiperazin-1-yl)propane Derivatives, with Dual Action at 5-HT_1A Serotonin Receptors and Serotonin Transporter, as a New Class of Antidepressants

1区 · 医学

Article

作者: Heras, Begoña ; Bosch, Ana ; Oficialdegui, Ana-M. ; Monge, Antonio ; Lasheras, Berta ; Del Castillo, Juan-C. ; Palop, Juan-A. ; Pérez-Silanes, Silvia ; Mourelle, Marisa ; Roca, Joan ; Martínez-Esparza, Javier ; Tordera, Rosa ; Orús, Lara ; Del Río, Joaquín

In a search toward new and efficient antidepressants, 1-aryl-3-(4-arylpiperazin-1-yl)propane derivatives were designed, synthesized, and evaluated for 5-HT reuptake inhibition and 5-HT1A receptor antagonism. This dual pharmacological profile should lead, in principle, to a rapid and pronounced enhancement in serotoninergic neurotransmission and consequently to a more efficacious treatment of depression. The design was based on coupling structural moieties related to inhibition of serotonin reuptake, such as gamma-phenoxypropylamines, to arylpiperazines, typical 5-HT1A ligands. In binding studies, several compounds showed affinity at the 5-HT transporter and 5-HT1A receptors. Antidepressant-like activity was initially assayed in the forced swimming test with those compounds with Ki < 200 nM in both binding studies. Functional characterization was performed by measuring the intrinsic effect on rectal temperature in mice and also the antagonism to 8-OH-DPAT-induced hypothermia. The most efficacious compounds (12f, 23gE, 28a, and 28b) were further explored for their ability to antagonize 8-OH-DPAT-induced inhibition of forskolin-stimulated cAMP formation in a cell line expressing the 5-HT1A receptor. Furthermore, the antidepressant-like properties of 12f, 28a, and 28b, which exhibited 5-HT1A receptor antagonistic property in the latter study, were also evaluated in the learned helplessness test in rats. Among these three compounds, 28b (1-benzo[b]thiophene-3-yl)-3-[4-(2-methoxyphenyl)-1-ylpropan-1-ol) showed the higher affinity at both the 5-HT transporter and 5-HT1A receptors (Ki = 20 nM in both cases) and was also active in the other pharmacological tests. Such a pharmacological profile could lead to a new class of antidepressants with a dual mechanism of action and a faster onset of action.

100 项与 12F 相关的药物交易

登录后查看更多信息