The rapid synthesis of novel dicyclic spiropyrrolidine was reported, using [3+2]-cycloaddition of isatin N,N′-cyclic azomethine imine 1,3-dipoles, generated from the condensation of substituted isatins and pyrazolidones, with chalcones in 2–5 min. The dicyclic spiropyrrolidine oxoindole was smoothly acquired in moderate to excellent yields (35–95%) with high diastereoselectivities (>20 : 1 dr).
Rational design, synthesis and in vitro evaluation of allylidene hydrazinecarboximidamide derivatives as BACE-1 inhibitors
作者:Priti Jain、Pankaj K. Wadhwa、Shilpa Rohilla、Hemant R. Jadhav
DOI:10.1016/j.bmcl.2015.11.044
日期:2016.1
BACE-1 (beta-secretase) is considered to be one of the promising targets for treatment of Alzheimer's disease as it catalyzes the rate limiting step of A beta-42 production. Herein, we report a novel class of allylidene hydrazinecarboximidamide derivatives as moderately potent BACE-1 inhibitors, having aminoguanidine substitution on allyl linker with two aromatic groups on either side. A library of derivatives was designed based on the docking studies, synthesized and evaluated for BACE-1 inhibition in vitro. The designed ligands displayed interactions with the catalytic aspartate dyad through guanidinium functionality. Further, the aromatic rings placed on either side of the linker occupied S1 and S3 active site regions contributing to the activity. These ligands were also predicted to follow Lipinski rule and cross blood brain barrier. Compound 2.21, having high docking score, was found to be most active with IC50 of 6.423 mu M indicating good correlation with docking prediction. (C) 2015 Elsevier Ltd. All rights reserved.
Synthesis, antitubercular activity, and QSAR analysis of substituted nitroaryl analogs: chalcone, pyrazole, isoxazole, and pyrimidines
作者:Revathi A. Gupta、Satish G. Kaskhedikar
DOI:10.1007/s00044-012-0385-3
日期:2013.8
corresponding chalcones. These corresponding chalcones were reacted with hydrazine hydrate, urea, thiourea, and hydroxylamine hydrochloride, which led to the formation of corresponding novel pyrazole, pyrimidine, and isooxazole derivatives, respectively. All newly synthesized compounds were evaluated for their antimycobacterial activities against Mycobacterium tuberculosis using agar dilution. The results
A novel synthetic chalcone derivative, 2,4,6-trimethoxy-4′-nitrochalcone (Ch-19), exerted anti-tumor effects through stimulating ROS accumulation and inducing apoptosis in esophageal cancer cells
作者:Yan Yang、He Wu、Xiao Zou、Yongye Chen、Runjia He、Yibo Jin、Bei Zhou、Chunpo Ge、Yun Yang
DOI:10.1007/s12192-022-01302-z
日期:2022.11
anti-tumor effects of Ch-19. As a result, we observed that Ch-19 treatment promoted ROSaccumulation and caused G2/M phase arrest in both Eca-109 and KYSE-450 cancercell lines, thereby resulting in cellapoptosis. Taken together, our study provided a novelsyntheticchalconederivative as a potential anti-tumor therapeutic candidate for treating esophagealcancer.