含氮的双膦酸盐在某些乳腺癌和骨髓瘤患者中具有抗肿瘤活性。但是,这些药物的口服吸收,肿瘤细胞进入和活动受到限制,并会引起骨骼副作用。通过将磷酸化抗病毒药作为前药来治疗,其效力得到了提高,其中磷酸部分的负电荷被掩盖以使其具有亲脂性。我们合成了杂环双膦酸酯(BP)前药,其中膦酸酯部分被新戊酰氧基甲基(pivoxil)基团衍生,并且在双键碳原子上缺少羟基“骨钩”。当亲脂性BP前药进入肿瘤细胞时,它们会被细胞内酯酶转化为活性形式。活性最高的BP前药,四环戊二酰氧甲基2-(噻唑-2-基氨基)亚乙基-1,1-双膦酸酯(7),发现以纳摩尔浓度有效抑制多种肿瘤细胞系,特别是造血细胞的体外生长。与此事实一致,化合物7在低至1-10 n m的浓度下抑制了RAP1A小GTPase信号蛋白的异戊烯基化。在临床前研究中,7在免疫缺陷小鼠模型中减慢了人类膀胱癌细胞的生长。因此,7的活性比唑来膦酸的活性高得多,唑来膦酸是
Challenging synthesis of bisphosphonate derivatives with reduced steric hindrance
摘要:
DOI:
10.1016/j.tetlet.2021.153012
作为试剂:
描述:
聚合甲醛 、 四甲基亚甲基二磷酸酯 、 二乙胺 在
tetramethyl vinylidene-1,1-bisphosphonate 作用下,
以
甲醇 为溶剂,
反应 2.0h,
以3.05 g of tetramethyl ethenylidenebisphosphonate was produced as a clear liquid with the following spectral characteristics的产率得到tetramethyl vinylidene-1,1-bisphosphonate
参考文献:
名称:
Process for the manufacture of tetraalkyl ethenylidenebisphosphonate
Diketopyrrolopyrrole Bis‐Phosphonate Conjugate: A New Fluorescent Probe for In Vitro Bone Imaging
作者:Andrea Chiminazzo、Giuseppe Borsato、Alessia Favero、Chiara Fabbro、Charles E. McKenna、Luca Giuseppe Dalle Carbonare、Maria Teresa Valenti、Fabrizio Fabris、Alessandro Scarso
DOI:10.1002/chem.201805436
日期:2019.3.7
The synthesis of a conjugate molecule between an unusual red‐fluorescentdiketopyrrolopyrrole (DPP) unit and a bis‐phosphonate (BP) precursor by a click‐chemistry strategy to target bone tissue and monitor the interaction is reported. After thorough investigation, conjugation through a triazole unit between a γ‐azido rather than a β‐azido BP and an alkyne‐functionalized DPP fluorophore group turned
Phosphonated Fluoroquinolones, Antibacterial Analogs Thereof, and Methods for the Prevention and Treatment of Bone and Joint Infections
申请人:Delorme Daniel
公开号:US20080287396A1
公开(公告)日:2008-11-20
The present invention relates to phosphonated fluoroquinolones, antibacterial analogs thereof, and methods of using such compounds. These compounds are useful as antibiotics for prevention and/or the treatment of bone and joint infections, especially for the prevention and/or treatment of osteomyelitis.
α-Methylation enhances the potency of isoprenoid triazole bisphosphonates as geranylgeranyl diphosphate synthase inhibitors
作者:Robert A. Matthiesen、Michelle L. Varney、Pauline C. Xu、Alex S. Rier、David F. Wiemer、Sarah A. Holstein
DOI:10.1016/j.bmc.2017.10.023
日期:2018.1
malignancies, especially those characterized by excessive protein secretion such as multiple myeloma. Our work has demonstrated that some isoprenoid triazole bisphosphonates are potent and selective inhibitors of GGDPS. Here we present the synthesis and biological evaluation of a new series of isoprenoid triazoles modified by incorporation of a methyl group at the α-carbon. These studies reveal that incorporation
Discovery of Lipophilic Bisphosphonates That Target Bacterial Cell Wall and Quinone Biosynthesis
作者:Satish R. Malwal、Lu Chen、Hunter Hicks、Fiona Qu、Weidong Liu、Alli Shillo、Wen Xuan Law、Jianan Zhang、Neal Chandnani、Xu Han、Yingying Zheng、Chun-Chi Chen、Rey-Ting Guo、Ahmed AbdelKhalek、Mohamed N. Seleem、Eric Oldfield
DOI:10.1021/acs.jmedchem.8b01878
日期:2019.3.14
embryonic kidney cell line. Targeting of isoprenoid biosynthesis is involved with 74 having IC50 values of ∼100 nM against heptaprenyl diphosphatesynthase and 200 nM against farnesyl diphosphatesynthase. B. subtilis growth inhibition was rescued by addition of farnesyl diphosphate, menaquinone-4 (MK-4), or undecaprenyl phosphate (UP), and the combination of MK-4 and UP resulted in a 25× increase in ED50,
Antimicrobial agents and process for their manufacture
申请人:The Procter & Gamble Company
公开号:US04820698A1
公开(公告)日:1989-04-11
Disclosed are tetraalkyl enthenylidenebisphosphonates and a method for their manufacture. These compounds are suitable for use as antimicrobial agents in combating a number of pathogenic microorganisms, such as bacteria, yeasts, viruses, fungi and protozoa, when used together with a pharmaceutically-acceptable carrier. Also disclosed is a method for treating infectious diseases by administering a safe and effective amount of these tetraalkyl ethenylidenebisphosphonates.