Selective sorption and column concentration of alkali-metal cations by carboxylic acid resins with dibenzo-14-crown-4 subunits and their acyclic polyether analogs
摘要:
Alkall-metal cation sorption from aqueous and aqueous methanolic solutions and column concentration of alkall-metal cations from dilute aqueous solutions by carboxylic acid resins containing dibenzo-14-crown-4 units and their acyclic polyether analogues have been investigated. The crown ether carboxylic acid resins exhibit enhanced sorption selectivity over the acyclic polyether resins. Good sorption selectivity over the acyclic polyether resins. Good sorption selectivity for LI+ and Na+ was obtained with a cyclic polyether resin in which the carboxylic acid group is positioned over the crown either ring. For column concentration of alkali-metal cations from dilute aqueous solutions, gradient elution of the sorbed metal ions from the resin with the carboxylic acid group positioned over the crown either cavity gave selective column concentration of Li+ and Na+.
Hypocholesterolemic activity of 1,3-bis(substituted phenoxy)-2-propanones
作者:Claude Piantadosi、Iris H. Hall、Steven D. Wyrick、Khalid S. Ishaq
DOI:10.1021/jm00224a006
日期:1976.2
phenoxy)-2-propanones was found to be active hypocholesterolemicagents at 10 mg/kg/day. The p-chloro- and p-methyl-substituted phenoxy compounds possess the highest activity. These compounds did not possess the estrogenic and antifertility activities of the related previously reported derivatives of the bis(beta-phenylethyl) ketone series. The 1,3-bis(p-methylphenoxy)-2-propanone (7) also lowered serum triglycerides
发现一系列的1,3-双(取代的苯氧基)-2-丙烷是有效的降胆固醇药,剂量为10 mg / kg / day。对氯-和对甲基取代的苯氧基化合物具有最高的活性。这些化合物不具有以前报道过的双(β-苯乙基)酮系列相关衍生物的雌激素和抗生育活性。1,3-双(对甲基苯氧基)-2-丙酮(7)也会降低血清甘油三酸酯和甘油,这似乎是由于血清脂肪酶水平升高和肝脂肪酶活性降低所致。肝脏减少了游离脂肪酸向复杂脂质中的掺入。胆固醇在治疗的动物中排泄更快。
Revisiting Hydroxyalkylation of Phenols with Cyclic Carbonates
fluoride‐mediated hydroxyalkylation reaction of phenols with cyclic carbonates. This operationally simple method enables the synthesis of a variety of aryl β‐hydroxyethyl ethers in good to excellent yields with a very small amount of catalyst loading (0.1–1 mol%). Of particular note is the efficient conversion of aromatic diols and phloroglucinol to the corresponding bis‐ and tris‐hydroxyethylated products. To further
1,3-Bis(aryloxy)propan-2-ols as potential antileishmanial agents
作者:Stefânia N. Lavorato、Mariana C. Duarte、Daniela P. Lage、Carlos A. P. Tavares、Eduardo A. F. Coelho、Ricardo J. Alves
DOI:10.1111/cbdd.13024
日期:2017.11
We describe herein the synthesis and antileishmanial activity of 1,3-bis(aryloxy)propan-2-ols. Five compounds (2, 3, 13, 17, and 18) exhibited an effective antileishmanial activity against stationary promastigote forms of Leishmania amazonensis (IC50 < 15.0 μm), and an influence of compound lipophilicity on activity was suggested. Most of the compounds were poorly selective, as they showed toxicity
Preparation of ranolazine and intermediates thereof, for use in pharmaceutical compositions comprising ranolazine.
制备拉诺拉嗪及其中间体,用于制备包含拉诺拉嗪的药物组合物。
HIGHLY PURE RANOLAZINE OR A PHARMACEUTICALLY ACCEPTABLE SALT THEREOF
申请人:Athukuri Venkata Subbarao
公开号:US20110223213A1
公开(公告)日:2011-09-15
Provided herein is an impurity of ranolazine, 1-[4-[2-hydroxy-3-(2-methoxy-phenoxy)-propyl]-piperazin-1-yl]-3-(2-methoxy-phenoxy)-propan-2-ol (dimer impurity-3), and process for preparing and isolating thereof. Provided further herein is a highly pure ranolazine or a pharmaceutically acceptable salt thereof substantially free of dimer impurity-3, process for the preparation, and pharmaceutical compositions comprising highly pure ranolazine or a pharmaceutically acceptable salt thereof substantially free of dimer impurity-3.