目的以AU1235为先导化合物,设计合成含金刚烷基和三氟苯基的二肽类衍生物以及用其他基团替代金刚烷基的脲类衍生物,并对这两类化合物进行抗结核活性评价和哺乳动物细胞毒评价。方法以α-氨基酸为起始原料,经过缩合、脱保护基、再缩合等步骤合成二肽类化合物;以2,3,4-三氟苯胺为起始原料,经过异氰酸酯化、偶联反应等步骤合成脲类化合物。采用Microplate Alamar Blue Assay(MABA)法及四氮唑盐(MTT)还原法测试化合物的抗结核活性(MIC值)和细胞毒性(IC50值)。结果与结论合成了24个未见文献报道的目标化合物,其结构经过1H-NMR、13C-NMR、HR-MS谱确证。生物活性评价表明,脲类化合物Ⅲi不仅具有很好的抗结核活性(MIC=0.060μg·m L-1),还具有较低的细胞毒性和脂水分配系数,值得进一步研究。
Mycothiol （MSH） is the major low molecular weight thiol in most actinomycetes. Chemical synthesis of MSH is of value for enzymology and inhibitor screening assays, but is hampered by difficulties in large scale sysn...
详细信息
Mycothiol （MSH） is the major low molecular weight thiol in most actinomycetes. Chemical synthesis of MSH is of value for enzymology and inhibitor screening assays, but is hampered by difficulties in large scale sysnthesis. We achieved the total synthesis of MSH by linking 2-camphanoyl-3,4,5,6-tetra-O-benzyl-D-rnyo-inositol （D-1） and 2-deoxy-2-azido-3,4,6-tri-O-benzyl- 1-p-toluene-thio-o-glucoside （2） first, followed by coupling with N-Boc-S-acetyl-L-cysteine （3）. This route of synthesis allowed the efficient and convenient synthesis of mycothiol on a large scale.
暂无评论