Synthesis of a Poly-hydroxypyrolidine-Based inhibitor of <i>Mycobacterium tuberculosis</i> GlgE
作者:Sri Kumar Veleti、Jared J. Lindenberger、Sandeep Thanna、Donald R. Ronning、Steven J. Sucheck
DOI:10.1021/jo501481r
日期:2014.10.17
in α-glucan biosynthesis. Mutation of GlgE in Mtb increases the concentration of maltose-1-phosphate (M1P), one substrate for GlgE, causing rapid cell death. We have designed 2,5-dideoxy-3-O-α-d-glucopyranosyl-2,5-imino-d-mannitol (9) to act as an inhibitor of GlgE. Compound 9 was synthesized using a convergent synthesis by coupling thioglycosyl donor 14 and 5-azido-3-O-benzyl-5-deoxy-1,2-O-isopropy
治疗时间长、药物依从性差以及治疗结核分枝杆菌( Mtb )期间的自然选择导致广泛耐药结核病 (XDR-TB)。因此,需要确定新的抗结核药物靶点。Mtb GlgE 是一种麦芽糖基转移酶,参与 α-葡聚糖生物合成。Mtb中 GlgE 的突变会增加 1-磷酸麦芽糖 (M1P)(GlgE 的一种底物)的浓度,从而导致细胞快速死亡。我们已经设计了2,5-二脱氧-3- ö -α- d吡喃葡萄糖基-2,5-亚氨基d -mannitol(9)作为GlgE的抑制剂。化合物9通过将硫糖基供体14和 5-叠氮基-3 - O-苄基-5-脱氧-1,2 - O-异亚丙基-β - d-吡喃果糖 ( 23 )偶联形成二糖24,使用会聚合成法合成。还原和分子内还原胺化将中间体二糖24转化为所需的吡咯烷9。化合物9抑制Mtb GlgE 和天蓝色链霉菌( Sco ) GlgEI的变体,K i = 237 ± 27 μM 和K i=