55211-84-2Relevant articles and documents
Design and synthesis of tricyclic terpenoid derivatives as novel PTP1B inhibitors with improved pharmacological property and in vivo antihyperglycaemic efficacy
Chen, Feng,Chen, Jiabao,Gao, Cheng,Li, Junyan,Liu, Siyan,Qian, Shan,Wang, Zhouyu,Yang, Lingling,Zhang, Yuanyuan
, p. 152 - 164 (2019/11/25)
Overexpression of protein tyrosine phosphatase 1B (PTP1B) induces insulin resistance in various basic and clinical research. In our previous work, a synthetic oleanolic acid (OA) derivative C10a with PTP1B inhibitory activity has been reported. However, C10a has some pharmacological defects and cytotoxicity. Herein, a structure-based drug design approach was used based on the structure of C10a to elaborate the smaller tricyclic core. A series of tricyclic derivatives were synthesised and the compounds 15, 28 and 34 exhibited the most PTP1B enzymatic inhibitory potency. In the insulin-resistant human hepatoma HepG2 cells, compound 25 with the moderate PTP1B inhibition and preferable pharmaceutical properties can significantly increase insulin-stimulated glucose uptake and showed the insulin resistance ameliorating effect. Moreover, 25 showed the improved in vivo antihyperglycaemic potential in the nicotinamide–streptozotocin-induced T2D. Our study demonstrated that these tricyclic derivatives with improved molecular architectures and antihyperglycaemic activity could be developed in the treatment of T2D.
Ortho-directed lithiation of ω-phenoxy alcohols
Salteris, Constantinos S.,Kostas, Ioannis D.,Micha-Screttas, Maria,Heropoulos, George A.,Screttas, Constantinos G.,Terzis, Aris
, p. 5589 - 5592 (2007/10/03)
ω-Phenoxy alcohols, PhO(CH2)(n)OH (n = 2-7), have been subjected to metalation with 2 equiv of n-butyllithium in tetrahydrofuran/methylcyclohexane solvent. Reaction of the resulting lithiated compounds with carbon dioxide (n = 2-7), benzaldehyde (n = 2-6), benzophenone (n = 2, 3), dimethylformamide (n = 2), ethyl formate (n = 2), and chlorodiphenylphosphine (n = 3) afforded the corresponding ortho- substituted hydroxyalkoxybenzenes in yields ranging from 45 to 83%. The synthesis is also reported of five new bis[o-(ω-hydroxyalkoxy)phenyl]mercury compounds (n = 2-6), four crystal structures of which have been determined.
