Microspheres are produced by contacting a solution of a macromolecule or small molecule in a solvent with an antisolvent and a counterion, and chilling the solution. The microspheres are useful for preparing pharmaceuticals, nutraceuticals, cosmetic products and the like of defined dimensions.
Cation radicals of phenothiazines. Part 4. Electron transfer between aquamanganese(III) and N-alkylphenothiazines
作者:Ezio Pelizzetti
DOI:10.1039/dt9800000484
日期:——
The kinetics of electrontransferbetweenaquamanganese(III) and N-alkylphenothiazines, giving rise to the corresponding cationradicals, has been investigated in the range 0.20–1.50 mol dm–3 HClO4 at different temperatures. The main reaction path has been assigned to the unhydrolysed species Mn3+(aq), and there is a dependence of the rate constants on the corresponding reduction potentials.
Compositions and methods to effect the release profile in the transdermal administration of active agents
申请人:——
公开号:US20020004065A1
公开(公告)日:2002-01-10
Compositions and methods for the transdermal delivery of active agents up to a period of seven days or more at substantially a zero-order release rate comprising a pharmaceutically acceptable adhesive matrix and a polymeric plastic material that provides a release rate regulating effect on the active agents.
Targetable diagnostic and/or therapeutically active agents, e.g. ultrasound contrast agents, comprising a suspension in an aqueous carrier liquid of a reporter comprising gas-containing or gas-generating material, said agent being capable of forming at least two types of binding pairs with a target.
Thioarylation of anilines using dual catalysis: two-step synthesis of phenothiazines
作者:Amy C. Dodds、Sabrina Puddu、Andrew Sutherland
DOI:10.1039/d2ob01082h
日期:——
analogues. The thioarylated adducts were then cyclised to the desired phenothiazines using either an Ullmann–Goldberg or Buchwald–Hartwig coupling reaction. The dual catalytic thioarylation and copper(I)-catalysed cyclisation approach was used for the four-step synthesis of methopromazine, a neuroleptic agent with antipsychotic activity.