The first syntheses of single enantiomers of the major methoxymycolic acid of Mycobacterium tuberculosis
摘要:
The synthesis of three stereoisomers of a major homologue of the methoxymycolic acids present in Mycobacterium tuberculosis is described. (c) 2007 Elsevier Ltd. All rights reserved.
Total Synthesis of a Mycolic Acid from
<i>Mycobacterium tuberculosis</i>
作者:Nabil Tahiri、Peter Fodran、Dhineshkumar Jayaraman、Jeffrey Buter、Martin D. Witte、Tonatiuh A. Ocampo、D. Branch Moody、Ildiko Van Rhijn、Adriaan J. Minnaard
DOI:10.1002/anie.202000523
日期:2020.5.4
In Mycobacterium tuberculosis, mycolicacids and their glycerol, glucose, and trehalose esters ("cord factor") form the main part of the mycomembrane. Despite their first isolation almost a century ago, full stereochemical evaluation is lacking, as is a scalable synthesis required for accurate immunological, including vaccination, studies. Herein, we report an efficient, convergent, gram-scale synthesis
在结核分枝杆菌中,分枝菌酸及其甘油、葡萄糖和海藻糖酯(“索因子”)形成菌膜的主要部分。尽管它们在近一个世纪前首次分离,但仍缺乏完整的立体化学评估,以及准确的免疫学(包括疫苗接种)研究所需的可扩展合成。在此,我们报告了分枝菌酸及其葡萄糖酯的四种立体异构体的高效、收敛、克级合成。与抗原呈递蛋白 CD1b 的结合和 T 细胞活化研究用于确认合成材料的抗原性。通过比较天然材料中顺式甲氧基甲基部分的旋光度与合成材料的旋光度来评估其绝对立体化学。
The synthesis of mycobacterial dimycoloyl diarabinoglycerol based on defined synthetic mycolic acids
作者:Omar T. Ali、Mohsin O. Mohammed、Paul J. Gates、Mark S. Baird、Juma’a R. Al Dulayymi
DOI:10.1016/j.chemphyslip.2019.01.002
日期:2019.7
and potentially valuable antigens in the serodiagnosis of mycobacterial infections. We now report the highly stereocontrolled synthesis of diacyl l-glycerol-(1'→1)-β-d-arabinofuranosyl-α-d-arabinofuranosides based on simple fatty acids and single defined synthetic mycolicacids. NMR analysis confirmed that the synthetic core was identical to that in natural mixtures.
Synthetic trehalose di- and mono-esters of α-, methoxy- and keto-mycolic acids
作者:Juma'a R. Al Dulayymi、Mark S. Baird、Maximiliano Maza-Iglesias、Rwoa'a T. Hameed、Klarah S. Baols、Majed Muzael、Ahmed D. Saleh
DOI:10.1016/j.tet.2014.10.072
日期:2014.12
Synthetic mycolic acids matching the overall structure of the major mycolic acids of Mycobacterium tuberculosis are coupled to trehalose to generate the corresponding synthetic trehalose monomycolate (TMM) and trehalose dimycolate (TDM; cord factor), either with two identical or two different mycolic acids. (C) 2014 Elsevier Ltd. All rights reserved.
The first unique synthetic mycobacterial cord factors
作者:Juma’a R. Al Dulayymi、Mark S. Baird、Maximiliano Maza-Iglesias、Seppe Vander Beken、Johan Grooten
DOI:10.1016/j.tetlet.2009.03.213
日期:2009.7
Synthetic mycolic acids matching the overall structure of the major alpha- and methoxy-mycolic acids of Mycobacterium tuberculosis are coupled to trehalose to generate the corresponding synthetic trehalose dimycolate (TDM; cord factor) and trehalose monomycolate (TMM). (C) 2009 Elsevier Ltd. All rights reserved.