6650-04-0Relevant articles and documents
Discovery of novel liver X receptor inverse agonists as lipogenesis inhibitors
Chen, Ziyang,Chen, Hao,Zhang, Zizhen,Ding, Peng,Yan, Xin,Li, Yanwen,Zhang, Songxuan,Gu, Qiong,Zhou, Huihao,Xu, Jun
, (2020)
Based on the co-crystal structures of LXRβ and its agonists (spiro [pyrrolidine-3,3′-oxindole] derivatives) discovered by us previously, we designed and synthesized a compound library to explore the agonistic activities. The library was screened with luciferase reporter assays, interestingly, it resulted in the discovery of 10 LXR inverse agonists besides 5 LXR agonists. To clarify the mechanism of the actions, we conducted molecular dynamics (MD) simulations on the LXR and inverse agonists complexes, and revealed that H3, H11 and H12 configurations are the key to turn on agonism or inverse agonism status for LXR. Binding tightly with H3, pushing H11 out and destabilizing H12 could form a bigger hydrophobic groove to accommodate NCOR1 to turn on LXR inverse agonism. The inverse agonist 10rr was further studied, and found as a lipogenesis inhibitor through down-regulating LXR target genes SREBP-1c, ACC, FAS and SCD-1, and demonstrated lipid-lowering effects in 3T3-L1 cells, HepG2 cells and mice with Triton WR-1339-induced hyperlipidemia. Therefore, we have proved that LXR inverse agonists can be promising agents for hyperlipidemia treatment.
TCCA-mediated oxidative rearrangement of tetrahydro-β-carbolines: Facile access to spirooxindoles and the total synthesis of (±)-coerulescine and (±)-horsfiline
Sathish, Manda,Sakla, Akash P.,Nachtigall, Fabiane M.,Santos, Leonardo S.,Shankaraiah, Nagula
, p. 16537 - 16546 (2021/05/19)
Multi-reactive centered reagents are beneficial in chemical synthesis due to their advantage of minimal material utilization and formation of less by-products. Trichloroisocyanuric acid (TCCA), a reagent with three reactive centers, was employed in the synthesis of spirooxindoles through the oxidative rearrangement of various N-protected tetrahydro-β-carbolines. In this protocol, low equivalents of TCCA were required to access spirooxindoles (up to 99% yield) with a wide substrate scope. Furthermore, the applicability and robustness of this protocol were proven for the gram-scale total synthesis of natural alkaloids such as (±)-coerulescine (1) and (±)-horsfiline (2) in excellent yields.
Spiro (3,3'-isopropylpyrrolidineoxoindole) liver X receptor regulator and preparation method and application thereof
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Paragraph 0116; 0118; 0120; 0129, (2019/10/17)
The invention relates to a spiro (3,3'-isopropyl pyrrolidineoxoindole) liver X receptor modifier and a preparation method and application thereof, particularly provides a compound which is a compoundshown in a formula (I), or a stereoisomer, a geometric i