Thiazolo [2, 3-f] guanines were synthesized by the cyclization of 8-acylmethylthioguanines. Structure of these compounds were determined by desulfurization with Raney Ni.
Structure-Based Design and Development of Functionalized Mercaptoguanine Derivatives as Inhibitors of the Folate Biosynthesis Pathway Enzyme 6-Hydroxymethyl-7,8-dihydropterin Pyrophosphokinase from <i>Staphylococcus aureus</i>
作者:Matthew L. Dennis、Sandeep Chhabra、Zhong-Chang Wang、Aaron Debono、Olan Dolezal、Janet Newman、Noel P. Pitcher、Raphael Rahmani、Ben Cleary、Nicholas Barlow、Meghan Hattarki、Bim Graham、Thomas S. Peat、Jonathan B. Baell、James D. Swarbrick
DOI:10.1021/jm501417f
日期:2014.11.26
6-Hydroxymethyl-7,8-dihydropterin pyrophosphokinase (HPPK), an enzyme from the folate biosynthesis pathway, catalyzes the pyrophosphoryl transfer from ATP to 6-hydroxymethyl-7,8-dihydropterin and is a yet-to-be-drugged antimicrobial target. Building on our previous discovery that 8-mercaptoguanine (8MG) is an inhibitor of Staphylococcus aureus HPPK (SaHPPK), we have identified and characterized the binding of an S8-functionalized derivative (3). X-ray structures of both the SaHPPK/3/cofactor analogue ternary and the SaHPPK/cofactor analogue binary complexes have provided insight into cofactor recognition and key residues that move over 30 angstrom upon binding of 3, whereas NMR measurements reveal a partially plastic ternary complex active site. Synthesis and binding analysis of a set of analogues of 3 have identified an advanced new lead compound (11) displaying >20-fold higher affinity for SaHPPK than 8MG. A number of these exhibited low micromolar affinity for dihydropteroate synthase (DHPS), the adjacent, downstream enzyme to HPPK, and may thus represent promising new leads to bienzyme inhibitors.
UNO H.; IRIE A.; HINO K., CHEM. AND PHARM. BULL. <CPBT-AL>, 1975, 23, NO 2, 450-451
作者:UNO H.、 IRIE A.、 HINO K.
DOI:——
日期:——
8-Mercaptoguanine-based inhibitors of <i>Mycobacterium tuberculosis</i> dihydroneopterin aldolase: synthesis, <i>in vitro</i> inhibition and docking studies
作者:Alexia de Matos Czeczot、Candida Deves Roth、Rodrigo Gay Ducati、Kenia Pissinate、Raoní Scheibler Rambo、Luís Fernando Saraiva Macedo Timmers、Bruno Lopes Abbadi、Fernanda Souza Macchi、Víctor Zajaczkowski Pestana、Luiz Augusto Basso、Pablo Machado、Cristiano Valim Bizarro
DOI:10.1080/14756366.2021.1900157
日期:2021.1.1
Abstract The dihydroneopterin aldolase (DHNA, EC 4.1.2.25) activity of FolB protein is required for the conversion of 7,8-dihydroneopterin (DHNP) to 6-hydroxymethyl-7,8-dihydropterin (HP) and glycolaldehyde (GA) in the folate pathway. FolB protein from Mycobacterium tuberculosis (MtFolB) is essential for bacilli survival and represents an important molecular target for drug development. S8-functionalized
Thiazolo [2, 3-f] guanines were synthesized by the cyclization of 8-acylmethylthioguanines. Structure of these compounds were determined by desulfurization with Raney Ni.