The First Syntheses of GLA-60 Positional Isomers and Their Biological Activities.
The First Syntheses of GLA-60 Positional Isomers and Their Biological Activities.
复制标题
GLA-60 位置异构体的首次合成及其生物活性。
DOI:
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发表时间:
1997
期刊:
影响因子:
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通讯作者:
M. Nishijima
中科院分区:
文献类型:
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作者:
M. Shiozaki;M. Arai;W. M. Macindoe;T. Mochizuki;Takanori Wakabayashi;S. Kurakata;T. Tatsuta;H. Maeda;M. Nishijima
Six GLA-60 positional isomers (8, 14, 14′, 20, 26, and 26′) were synthesized to investigate their biological activities. Compound 8 exhibited potent agonistic activity, while compounds 26 and 26′ exhibited slight agonistic activity on TNFα production toward human monoblastic U937 cells. TNFα production (% control; 10 ng ml−1 of LPS = 100) of compound 8 in the concentration of 10 μM was 611, and that of lipid A in the same concentration was 651. In contrast, the difluorinated compounds 14, 14′, and 20 showed little agonistic activity on TNFα production. And neither compound 8 nor compounds 26 and 26′ showed antagonistic activity. On the other hand, the difluorinated compounds 14, 14′, and 20 showed potent antagonistic activity, and inhibited the LPS-induced TNFα production dose-dependently. Compound 14′ (10 μM) inhibited in excess of 80% of the LPS-induced TNFα production.
DOI:
10.1016/s0021-9258(18)55023-7
发表时间:
1991-10
期刊:
The Journal of biological chemistry
影响因子:
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作者:
Douglas T. GolenbockSQll;Randolph;HamptonIIQ;N. Qureshi;K. Takayama;Christian R. H. RaetzQ
通讯作者:
Douglas T. GolenbockSQll;Randolph;HamptonIIQ;N. Qureshi;K. Takayama;Christian R. H. RaetzQ