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Synthesis of deoxygenated α(1 → 5)-linked arabinofuranose disaccharides as substrates and inhibitors of arabinosyltransferases of Mycobacterium tuberculosis
被引:15
作者:
Pathak, Ashish K.
[1
]
Pathak, Vibha
[1
]
Suling, William J.
[1
]
Riordan, James R.
[1
]
Gurcha, Sudagar S.
[2
]
Besra, Gurdyal S.
[2
]
Reynolds, Robert C.
[1
]
机构:
[1] So Res Inst, Drug Discovery Div, Birmingham, AL 35255 USA
[2] Univ Birmingham, Sch Biosci, Birmingham B15 2TT, W Midlands, England
基金:
英国医学研究理事会;
关键词:
Arabinosyltransferases;
Mycobacterium tuberculosis;
Deoxyarabinofuranose;
2-Fluoroarabinofuranose;
Disaccharides;
Inhibitors;
DRUG-RESISTANT TUBERCULOSIS;
HIV-INFECTED PATIENTS;
STEREOSELECTIVE-SYNTHESIS;
MULTIDRUG-RESISTANT;
TRANSFERASE-ACTIVITY;
DERIVATIVES;
ANALOGS;
GLYCOSYLATION;
BIOSYNTHESIS;
EPIDEMIOLOGY;
D O I:
10.1016/j.bmc.2008.11.027
中图分类号:
Q5 [生物化学];
Q7 [分子生物学];
学科分类号:
071010 ;
081704 ;
摘要:
Arabinosyltransferases (AraTs) play a critical role in mycobacterial cell wall biosynthesis and are potential drug targets for the treatment of tuberculosis, especially multi-drug resistant forms of M. tuberculosis (MTB). Herein, we report the synthesis and acceptor/inhibitory activity of Araf alpha(1 -> 5) Araf disaccharides possessing deoxygenation at the reducing sugar of the disaccharide. Deoxygenation at either the C-2 or C-3 position of Araf was achieved via a free radical procedure using xanthate derivatives of the hydroxyl group. The alpha(1 -> 5)-linked disaccharides were produced by coupling n-octyl alpha-Araf 2-/3-deoxy, 2-fluoro glycosyl acceptors with an Araf thioglycosyl donor. The target disaccharides were tested in a cell free mycobacterial AraTs assay as well as an in vitro assay against MTB H37Ra and M. avium complex strains. (C) 2008 Elsevier Ltd. All rights reserved.
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页码:872 / 881
页数:10
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