3 results about "Tamsulosin" patented technology

The present invention relates to a sustained-release enteric coating pellet and a method for manufacturing same and, more specifically, to a sustained-release enteric coating pellet and a method for manufacturing same, the sustained-release enteric coating pallet comprising: an inert core; a coating layer of an active ingredient formed on the core; a sustained-release coating layer formed on the coating layer of the active ingredient; and an enteric coating layer formed on the sustained-release coating layer, wherein: the active ingredient is tamsulosin or a pharmaceutically acceptable salt thereof; the sustained-release coating layer comprises a sustained-release agent and a coating stabilizer; the coating stabilizer is polyvinyl alcohol, such that the pellet allows for the sustained release in a continuous and stable manner under enteric conditions and exhibits high reproducibility even when manufactured under various environmental or process conditions.

1. Name of the product in this design: Toothpaste packaging box (Tamusu baking soda). 2. Purpose of this design: For use in the outer packaging of toothpaste. 3. The key design features of this product are the combination of shape and pattern. 4. The picture or photo that best illustrates the key design points: Design 1 3D diagram 1. 5. Design 1 is designated as the basic design.

The invention relates to tamsulosin, in particular to a tamsulosin chiral amine preparation method. According to the method, Fmoc-p-methoxy-L-phenylalanine which is low in cost and can be commercially purchased is used as a raw material, and the Fmoc-p-methoxy-L- The method comprises the following steps: 1) carrying out a reduction reaction on a compound A (Fmoc-p-methoxy-L-phenylalanine) and borane to obtain a compound B; 2) carrying out Appel reaction on the compound B to obtain a compound C; 3) performing hydrodehalogenation reaction on the compound C to obtain a compound D; the invention provides a preparation method of tamsulosin chiral amine, which comprises the following steps: (1) carrying out a sulfonation reaction on a compound D and chlorosulfonic acid, and reacting with ammonia water to obtain a compound E. (5) carrying out deprotection on the compound E to obtain a compound F (tamsulosin chiral amine). The preparation method of tamsulosin chiral amine is a brand new preparation method of tamsulosin chiral amine, and has the advantages of simple route, cheap and easily available raw materials, mild conditions and high reaction yield, and greatly reduces the production cost of tamsulosin.