摘要:
Provided are a method of making irbesartan via a Suzuki coupling reaction and a novel intermediate, 2-butyl-3-(4′-bromobenzyl)-1,3-diazaspiro[4.4]non-1-ene-4-one, for such process. The novel process includes the step of reacting such intermediate with a protected imidazolephenylboronic acid.
摘要:
The invention encompasses synthesizing 7-(4-bromobutoxy)-3,4-dihydrocarbostyril by mixing 7-hydroxy-tetrahydroquinolinone, dibromobutane, and at least one base to form a reaction mixture; heating the reaction mixture; cooling the reaction mixture; and isolating the 7-(4-bromobutoxy)-3,4-dihydrocarbostyril from the reaction mixture. The invention also encompasses using phase transfer catalysts during the reaction.
摘要:
The present invention relates to lamotrigine, a useful agent for anti-epilepsia. New crystal forms of lamotrigine containing molecules of the solvent in stoichiometric ratios are disclosed. The present invention also provides processes for preparing the new crystal forms of lamotrigine.
摘要:
The present invention relates to novel essentially pure venlafaxine and the process of preparation thereof. The present invention also relates to novel solvate forms of venlafaxine hydrochloride and the process of preparation thereof. Furthermore, the present invention provides a novel process for preparing venlafaxine hydrochloride from venlafaxine; the process comprises the steps of: i) preparing a mixture of venlafaxine with acetone; and ii) exposing the mixture in gaseous hydrochloric acid.
摘要:
The present invention provides pioglitazone of defined particle size distribution. The Pioglitazone of defined particle size can be formulated into a wide variety of dosage forms.
摘要:
Provides are crystalline forms of nateglinide, labeled Forms A, C, D, F, G, I, J, K, L, M, N, O, P, Q, T, U, V, Y, α, β, γ, δ, ε, σ, θ and Ω, processes for their preparation and processes for preparation of other crystalline forms of nateglinide. Also provided are their pharmaceutical formulations and methods of administration.
摘要:
This invention relates to an improved process of preparing carvedilol, as well as a new crystalline hydrate and solvate and forms of carvedilol, processes for the manufacture thereof, and pharmaceutical compositions thereof.
摘要:
The present invention is directed to the novel forms of torsemide, designated Form V, amorphous torsemide, Dupont Form 2 solvent adduct, Dupont Form 2 ethanol adduct and Dupont Form 2 isopropanol adduct. Methods for their preparation are also disclosed. The present invention also relates to processes for making torsemide modification I. Pharmaceutical compositions containing the new forms of torsemide and methods of using them are also disclosed.
摘要:
The present invention relates to novel crystalline forms of quetiapine hemifumarate, denominated quetiapine hemifumarate form II and quetiapine hemifumarate form III. These novel crystalline forms of quetiapine hemifumarate have been characterized by methods including x-ray powder diffraction (XRD), Fourier transform IR spectroscopy (FTIR), differential scanning calorimetry (DSC), and thermal gravimetric analysis (TGA). Methods for preparation of the novel crystalline quetiapine hemifumarate form II as its chloroform solvate and its dichloromethane solvate, form III as its chloroform solvate, and form I are provided.