Synthesis of diosgenin prodrugs: anti-inflammatory and antiproliferative activity evaluation
作者:Leydi M Carrillo-Cocom、Bethsabe B Villagómez González、Rosa Santillan、Delia Soto-Castro、Paul M Sánchez Ocampo、Alejandro Zepeda、Jacqueline Capataz Tafur
DOI:10.1007/s12039-020-01808-y
日期:2020.12
Further, carboxylicacid ended prodrug was found to be more active than diosgenin as an antiproliferative agent, according to crystal violet assay. Graphic abstractDiosgenin was transformed to ester and acidprodrugsthrough succinic ester and a 1,2,3-triazole linkers. The prodrug with methyl ester terminals was four times more active than dexamethasone as anti-inflammatory compound, while prodrug with
摘要在这项工作中,我们评估了两种薯os皂苷元前药的抗增殖和抗炎活性。前药是通过在3位将薯os皂苷元与4-氧代-4-(prop-2-yn-1-yloxy)丁酸酯化,然后在末端炔烃上与3-azidopropan-1-ol N-烷基化树枝状分子进行点击反应而获得的。,导致与甲基酯端基的前体药物,并用衍生物叔丁基酯端基,水解叔丁基酯衍生物,得到一个与羧酸端子前药。所有化合物的特征在于1 H和1313 C NMR,ATR-FTIR和HR-ESI TOF。以薯gen皂甙元和地塞米松为阳性对照,对前药甲酯和羧酸对小鼠耳朵水肿的抗炎作用的研究表明,以ED 50为底物的甲基酯终止前药的优越性比地塞米松低四倍。此外,根据结晶紫测定,发现羧酸封端的前药比薯di皂苷元作为抗增殖剂更具活性。 图形摘要薯gen皂素通过琥珀酸酯和1,2,3-三唑连接基转化为酯和酸的前药。具有甲基末端的前药作为抗炎化合物的活性是地塞米松
Synthesis of azide-functionalized PAMAM dendrons at the focal point and their application for synthesis of PAMAM-like dendrimers
作者:Jae Wook Lee、Jung Hwan Kim、Byung-Ku Kim
DOI:10.1016/j.tetlet.2006.02.081
日期:2006.4
For the first time, the divergent synthesis of azide-functionalized PAMAM dendrons using azidopropyl amine as an azide focal point and convergentsynthesis of symmetric PAMAM-like dendrimers containing 1,2,3-triazole rings as connectors via click chemistry with a dialkyne core is described.
Versatile synthesis of asymmetrical dendron-like/dendron-like poly(ε-caprolactone)-b-poly(γ-benzyl-L-glutamate) block copolymers
作者:Wei Liu、Chang-Ming Dong
DOI:10.1002/pola.24784
日期:2011.8.15
Dendron‐like/dendron‐like poly(ε‐caprolactone)‐b‐poly(γ‐benzyl‐L‐glutamate) block copolymers with asymmetrical topology (PCL‐b‐PBLGn, both the subscript and the superscript denote the degree of polymerization and the branch number, respectively; n = 1, 2, and 4) were synthesized by combining ring‐opening polymerization (ROP) and click chemistry. The dendron‐like propargyl focal point PCL precursor
具有不对称拓扑结构的类Dendron /类Dendron类聚(ε-己内酯)-b-聚(γ-苄基L-谷氨酸)嵌段共聚物(PCL - b- PBLG n),下标和上标均表示聚合度分别通过开环聚合(ROP)和点击化学结合合成n和1、2和4)。由ε-己内酯的受控ROP合成具有8个分支的树突状炔丙基焦点PCL前体,然后单击与叠氮基焦点聚(酰胺基胺)树突共轭以生成具有多个伯胺基团的PCL树突。PCL树枝状分子进一步用作γ-苄基-L-谷氨酸N-羧基酐的ROP的大分子引发剂,以生产目标不对称嵌段共聚物。它们的分子结构和理化性质已通过FT-IR,1进行了彻底表征1 H NMR,凝胶渗透色谱,差示扫描量热法和广角X射线衍射。共聚物中最高熔融温度和PCL嵌段的结晶度均随着PBLG支链和/或链长的增加而降低,这表明PBLG嵌段逐渐抑制了PCL嵌段的结晶度。同时,随着PBLG链长度的增加,共聚物中的PBLG嵌段逐渐从
Dendrimeric dye-containing oligonucleotide probes and methods of preparation and uses thereof
申请人:Agilent Technologies, Inc.
公开号:US09732113B2
公开(公告)日:2017-08-15
The invention provides novel oligonucleotide probes that have dendrimeric dyes useful for detecting and analyzing biological samples, and compositions and methods thereof. The dendrimeric dye-containing oligonucleotide probes are useful for high sensitivity fluorescence in situ hybridization (FISH) of nucleic acids such as DNA and RNA.
The invention relates to dendrimers conjugated to multiple targeting peptides and one or more therapeutic, diagnostic, or imaging agents for delivery of such agents across the blood-brain barrier and into certain cell types including, cells expressing the LRP-1 receptor. Also described are methods of making compounds that comprise dendrimers conjugated to targeting peptides and therapeutic, diagnostic, or imaging agents.