低生物利用度严重阻碍了白藜芦醇生物医学潜力的开发。广泛的 II 期代谢和较差的水溶性有助于降低口服后血流中白藜芦醇的浓度。前药可能会提供解决方案——保护酚类功能会阻碍共轭代谢,并可用于调节化合物的理化性质。我们在此报告了白藜芦醇氨基甲酸酯衍生物的合成和表征,每个氮原子上带有一个甲基和一个甲氧基-聚(乙二醇)-350(mPEG-350)或一个赋予高水溶性的丁基-葡萄糖基promoiety。体外吸收研究表明,与 mPEG-350 不同,丁基-葡萄糖基结合物能够渗透肠壁。体内药代动力学证实了口服给药后的吸收,并表明氨基甲酸酯基团没有发生水解。因此,糖基团可以连接到白藜芦醇上以获得可溶性衍生物,在某种程度上保持渗透生物膜的能力,可能是通过促进或主动运输。
Synthesis of Novel gluco- and galacto-Functionalized Platinum Complexes
作者:Janina Möker、Joachim Thiem
DOI:10.1002/ejoc.200900691
日期:2009.10
severe problems, which prompt the development of novel functionalized platinumcomplexes. Selectively protected monohydroxy derivatives of glucose and galactose could be etherified by ω-halo ethers. Further, Finkelstein reaction and malonate synthesis gave precursor glycoconjugates which were easily transformed into their (diammine)platinumcomplexes. First tests with different tumour cell lines show
Synthesis and hydrolysis studies of novel glyco-functionalized platinum complexes
作者:Janina Möker、Joachim Thiem
DOI:10.1016/j.carres.2011.08.024
日期:2012.2
and some of its derivatives are among the most active cytostatics for cancer treatment. Unfortunately, application of platinum complexes always indicates side effects, and frequently primary or developed resistance of tumour cells appear. Therefore, development of novel analogues especially with natural ligands is expedited. Glyco-functionalized ligands were obtained via ether synthesis with omega-halo
provide a solution—protection of the phenolic functions hinders conjugative metabolism and can be exploited to modulate the physicochemical properties of the compound. We report here the synthesis and characterization of carbamate ester derivatives of resveratrol bearing on each nitrogen atom a methyl group and either a methoxy-poly(ethylene glycol)-350 (mPEG-350) or a butyl-glucosyl promoiety conferring
低生物利用度严重阻碍了白藜芦醇生物医学潜力的开发。广泛的 II 期代谢和较差的水溶性有助于降低口服后血流中白藜芦醇的浓度。前药可能会提供解决方案——保护酚类功能会阻碍共轭代谢,并可用于调节化合物的理化性质。我们在此报告了白藜芦醇氨基甲酸酯衍生物的合成和表征,每个氮原子上带有一个甲基和一个甲氧基-聚(乙二醇)-350(mPEG-350)或一个赋予高水溶性的丁基-葡萄糖基promoiety。体外吸收研究表明,与 mPEG-350 不同,丁基-葡萄糖基结合物能够渗透肠壁。体内药代动力学证实了口服给药后的吸收,并表明氨基甲酸酯基团没有发生水解。因此,糖基团可以连接到白藜芦醇上以获得可溶性衍生物,在某种程度上保持渗透生物膜的能力,可能是通过促进或主动运输。