59224-74-7Relevant articles and documents
Discovery of quinuclidine modulators of cellular progranulin
Burnett, Duane A.,Chen, Angela Y.-P.,Koenig, Gerhard,Lanter, James C.,Williamson, Toni,Blain, Jean-Fran?ois
, (2021/06/30)
Phenotypic screening of an annotated small molecule library identified the quinuclidine tetrahydroisoquinoline solifenacin (1) as a robust enhancer of progranulin secretion with single digit micromolar potency in a murine microglial (BV-2) cell line. Subsequent SAR development led to the identification of 29 with a 38-fold decrease in muscarinic receptor antagonist activity and a 10-fold improvement in BV-2 potency.
Design, Synthesis, and Biological Evaluation of Tetrahydroisoquinoline-Based Histone Deacetylase 8 Selective Inhibitors
Taha, Taha Y.,Aboukhatwa, Shaimaa M.,Knopp, Rachel C.,Ikegaki, Naohiko,Abdelkarim, Hazem,Neerasa, Jayaprakash,Lu, Yunlong,Neelarapu, Raghupathi,Hanigan, Thomas W.,Thatcher, Gregory R. J.,Petukhov, Pavel A.
, p. 824 - 829 (2017/08/16)
Histone deacetylase 8 (HDAC8) is a promising drug target for multiple therapeutic applications. Here, we describe the modeling, design, synthesis, and biological evaluation of a novel series of C1-substituted tetrahydroisoquinoline (TIQ)-based HDAC8 inhibitors. Minimization of entropic loss upon ligand binding and use of the unique HDAC8 "open" conformation of the binding site yielded a successful strategy for improvement of both HDAC8 potency and selectivity. The TIQ-based 3g and 3n exhibited the highest 82 and 55 nM HDAC8 potency and 330- and 135-fold selectivity over HDAC1, respectively. Selectivity over other class I isoforms was comparable or better, whereas inhibition of HDAC6, a class II HDAC isoform, was below 50% at 10 μM. The cytotoxicity of 3g and 3n was evaluated in neuroblastoma cell lines, and 3n displayed concentration-dependent cytotoxicity similar to or better than that of PCI-34051. The selectivity of 3g and 3n was confirmed in SH-SY5Y cells as both did not increase the acetylation of histone H3 and α-tubulin. Discovery of the novel TIQ chemotype paves the way for the development of HDAC8 selective inhibitors for therapeutic applications.
One-step preparation of 1-substituted tetrahydroisoquinolines via the Pictet-Spengler reaction using zeolite catalysts
Hegedüs, Adrienn,Hell, Zoltán
, p. 8553 - 8555 (2007/10/03)
A new, one-step variation of the Pictet-Spengler reaction has been elaborated using a small pore size zeolite as the catalyst. A new, environmentally friendly variation of the Pictet-Spengler reaction has been elaborated using a small pore size zeolite. The easily separable and recyclable catalyst provided high conversions and a shorter reaction time than the classical acetic acid or trifluoroacetic acid.