Nine prenylated and geranylated xanthones were synthesized in two steps with total yields ranging from 11%to 36%.All of the compounds were first reported.Then,the antitumor,anti-tyrosinase,anti-pancreatic lipase,antif...Nine prenylated and geranylated xanthones were synthesized in two steps with total yields ranging from 11%to 36%.All of the compounds were first reported.Then,the antitumor,anti-tyrosinase,anti-pancreatic lipase,antifungal and antibacterial activities of all or part of compounds 1–9 were evaluated.Compound 9 exhibited clear antitumor activity,and its cytotoxicity against MCF-7 and MDA-MB-231 cells was stronger compared with cisplatin.Compounds 1–4 and 6–7 also exhibited certain activity other than the antitumor activity described above.These results demonstrated that compounds 1–4,6–7 and 9 were very promising leads for further structural modification.展开更多
目的测定银屑病特异性转移因子(psoriatic transfer factor,PTF)的免疫活性。方法利用四氮唑盐-白细胞黏附抑制实验,分别测定PTF在不同浓度PTF或银屑病角蛋白下的黏附抑制指数及免疫特异性。结果PTF表现明显的白细胞黏附抑制作用,此作用...目的测定银屑病特异性转移因子(psoriatic transfer factor,PTF)的免疫活性。方法利用四氮唑盐-白细胞黏附抑制实验,分别测定PTF在不同浓度PTF或银屑病角蛋白下的黏附抑制指数及免疫特异性。结果PTF表现明显的白细胞黏附抑制作用,此作用与PTF,角蛋白浓度呈正相关,且具有抗原特异性。结论白细胞黏附抑制试验是体外评价PTF的免疫活性简单易行的方法。展开更多
基金Leading Project of Fujian Provincial Department of Science and Technology(Grant No.2018Y0072)。
文摘Nine prenylated and geranylated xanthones were synthesized in two steps with total yields ranging from 11%to 36%.All of the compounds were first reported.Then,the antitumor,anti-tyrosinase,anti-pancreatic lipase,antifungal and antibacterial activities of all or part of compounds 1–9 were evaluated.Compound 9 exhibited clear antitumor activity,and its cytotoxicity against MCF-7 and MDA-MB-231 cells was stronger compared with cisplatin.Compounds 1–4 and 6–7 also exhibited certain activity other than the antitumor activity described above.These results demonstrated that compounds 1–4,6–7 and 9 were very promising leads for further structural modification.
文摘目的测定银屑病特异性转移因子(psoriatic transfer factor,PTF)的免疫活性。方法利用四氮唑盐-白细胞黏附抑制实验,分别测定PTF在不同浓度PTF或银屑病角蛋白下的黏附抑制指数及免疫特异性。结果PTF表现明显的白细胞黏附抑制作用,此作用与PTF,角蛋白浓度呈正相关,且具有抗原特异性。结论白细胞黏附抑制试验是体外评价PTF的免疫活性简单易行的方法。
