Abstract:
Disclosed are novel dapoxetine derivatives and pharmaceutically acceptable salts thereof. The compounds are soluble in water, stable, and easy to process into preparations. In addition, the compounds exhibit improved dissolution rate and taste. Furthermore, the compounds exhibit a small difference in dissolution rate depending on pH. Further disclosed are pharmaceutical compositions including the compounds. The pharmaceutical compositions are useful for the treatment, management or prevention of premature ejaculation. Methods for preparing the dapoxetine derivatives are also disclosed.
Abstract:
The present invention relates to a method for preparing microsphere1- and microspheres produced by thereby. More particularly, the present invention relates to a method for preparing a polymeric microsphere comprising the steps of: mixing a water-insoluble organic solvent with a dispersion solvent; mixing a polymer compound, a drug and a water-insoluble organic solvent so as to prepare a dispersed phase; mixing the dispersed phase with the dispersion solvent mixed with the water-insoluble organic solvent so as to prepare an emulsion; and adding a base or an acid to the prepared emulsion so as to remove the water-insoluble organic solvent from the emulsion and a polymeric microsphere thereby, and a composition for drug delivery comprising the microspheres. In the inventive preparation method, it is possible to conveniently prepare a drug-containing polymeric microsphere within a short time using a small amount of water, with the generation of a minimized amount of waste solution without a requirement of a conventional solvent-evaporation or solvent-extract ion process. Also, since a low concentration of remaining solvent within a prepared polymeric microsphere can be maintained, it is effective in preparation in sustained-release type medicines.
Abstract:
The present invention relates to a pharmaceutical composition including a polymer microsphere that contains olanzapine as an active ingredient, and more particularly, to a pharmaceutical composition including a polymer microsphere containing olanzapine as an active ingredient, for treating or preventing a disease or a symptom thereof, the disease selected from a group comprised of schizophrenia and related mental illnesses, bipolar mania, bipolar disorder, seizure, obsessive/compulsive disorder, generalized anxiety disorder, post traumatic distress syndrome, extreme shyness, diabetic nerve pain, and depression, and to a method for preventing or treating, and usage thereof, and the pharmaceutical composition prepared by a method comprising the following steps: mixing a water insoluble organic solvent and a dispersion solvent; preparing a dispersion by mixing a polymer compound, olanzapine, and the water insoluble organic solvent; manufacturing an emulsion by mixing the dispersion with the dispersion solvent in which the water insoluble organic solvent while maintaining the temperature of the emulsion between 0°C to 10°C; and eliminating the water insoluble organic solvent from the emulsion by adding a base or an acid while maintaining the emulsion between 0°C to 10°C. The method for preparing of the present invention does not involve the existing steps of solvent evaporation or solvent extraction, uses little amount of water thereby minimizing waste water generation, while allowing for preparing the polymer microsphere including olanzapine in a swift and simple manner, maintains a low density of solvent remnants inside the polymer microsphere, and is effective for manufacturing sustained-release medicine including anastrozole, as the speed of releasing anastrozole in the body can be adjusted.
Abstract:
Disclosed are novel dapoxetine derivatives and pharmaceutically acceptable salts thereof. The compounds are soluble in water, stable, and easy to process into preparations. In addition, the compounds exhibit improved dissolution rate and taste. Furthermore, the compounds exhibit a small difference in dissolution rate depending on pH. Further disclosed are pharmaceutical compositions including the compounds. The pharmaceutical compositions are useful for the treatment, management or prevention of premature ejaculation. Methods for preparing the dapoxetine derivatives are also disclosed.
Abstract:
The present invention relates to a method for preparing microsphere and microspheres produced by thereby. More particularly, the present invention relates to a method for preparing a polymeric microsphere comprising the steps of: mixing a water-insoluble organic solvent with a dispersion solvent; mixing a polymer compound, a drug and a water-insoluble organic solvent so as to prepare a dispersed phase; mixing the dispersed phase with the dispersion solvent mixed with the water-insoluble organic solvent so as to prepare an emulsion; and adding a base or an acid to the prepared emulsion so as to remove the water-insoluble organic solvent from the emulsion and a polymeric microsphere thereby, and a composition for drug delivery comprising the microspheres. In the inventive preparation method, it is possible to conveniently prepare a drug-containing polymeric microsphere within a short time using a small amount of water, with the generation of a minimized amount of waste solution without a requirement of a conventional solvent-evaporation or solvent-extract ion process. Also, since a low concentration of remaining solvent within a prepared polymeric microsphere can be maintained, it is effective in preparation in sustained-release type medicines.
Abstract:
The present invention relates to a method for preparing microsphere1- and microspheres produced by thereby. More particularly, the present invention relates to a method for preparing a polymeric microsphere comprising the steps of: mixing a water-insoluble organic solvent with a dispersion solvent; mixing a polymer compound, a drug and a water-insoluble organic solvent so as to prepare a dispersed phase; mixing the dispersed phase with the dispersion solvent mixed with the water-insoluble organic solvent so as to prepare an emulsion; and adding a base or an acid to the prepared emulsion so as to remove the water-insoluble organic solvent from the emulsion and a polymeric microsphere thereby, and a composition for drug delivery comprising the microspheres. In the inventive preparation method, it is possible to conveniently prepare a drug-containing polymeric microsphere within a short time using a small amount of water, with the generation of a minimized amount of waste solution without a requirement of a conventional solvent-evaporation or solvent-extract ion process. Also, since a low concentration of remaining solvent within a prepared polymeric microsphere can be maintained, it is effective in preparation in sustained-release type medicines.
Abstract:
The present invention relates to a pharmaceutical composition including a polymer microsphere that contains anastrozole as an active ingredient, and more particularly, to a pharmaceutical composition for cancer treatment or prevention including a polymer microsphere that contains anastrozole, which is prepared by a method comprising the following steps: preparing a dispersion by mixing a polymer compound, anastrozole, and a water insoluble organic solvent; preparing an emulsion by mixing the dispersion with a dispersion solvent; eliminating the water insoluble organic solvent from the emulsion by adding a base or an acid; and obtaining the polymer microsphere from which the water insoluble organic solvent is removed and re-dispersing same in the heated dispersion solvent. The present invention also relates to a method for treating or preventing the cancer and usage thereof. The composition of the present invention does not involve the existing steps of solvent evaporation or solvent extraction, uses little amount of water thereby minimizing waste water generation, and allows low density of solvent remnants inside the polymer microsphere. Also, the present invention is effective for manufacturing sustained-release medicine including anastrozole, as the speed of releasing anastrozole in the body can be adjusted.
Abstract:
The present invention relates to a method for preparing microsphere and microspheres produced by thereby. More particularly, the present invention relates to a method for preparing a polymeric microsphere comprising the steps of: mixing a water-insoluble organic solvent with a dispersion solvent; mixing a polymer compound, a drug and a water-insoluble organic solvent so as to prepare a dispersed phase; mixing the dispersed phase with the dispersion solvent mixed with the water-insoluble organic solvent so as to prepare an emulsion; and adding a base or an acid to the prepared emulsion so as to remove the water-insoluble organic solvent from the emulsion and a polymeric microsphere thereby, and a composition for drug delivery comprising the microspheres. In the inventive preparation method, it is possible to conveniently prepare a drug-containing polymeric microsphere within a short time using a small amount of water, with the generation of a minimized amount of waste solution without a requirement of a conventional solvent-evaporation or solvent-extract ion process. Also, since a low concentration of remaining solvent within a prepared polymeric microsphere can be maintained, it is effective in preparation in sustained-release type medicines.