摘要:
The present invention relates to process for the preparation of Paroxetine hydrochloride, wherein Paroxetine-N-phenyl carbamate is isolated as a crystalline solid and further subjected to hydrolysis and converted into Paroxetine hydrochloride. According to our present invention N-methyl paroxetine is reacted with phenylchloroformate in the presence of base, solvent or optionally crystallizing in a solvent to give pure Paroxetine-N-phenyl carbamate. It is subjected to hydrolysis in the presence of base to give pharmaceutically acceptable paroxetine hydrochloride salt.
摘要:
Disclosed herein are novel compounds which are useful as intermediates for producing substituted sulfoxide compounds and a process for producing the same. Further disclosed is a process for producing the substituted sulfoxide compounds used as pharmacologically active agents, employing the novel intermediates of the present invention.
摘要:
The present invention provides an improved process for the preparation of Eprosartan or its pharmaceutically acceptable salt comprising the steps of: condensing compound of formula (a) with compound of formula (b) in presence of a catalyst, in a solvent to get a compound of formula (c), and hydrolyzing the compound of formula (c) to get Eprosartan and optionally converting Eprosartan to its pharmaceutically acceptable salt. The present invention also relates to process for the preparation of compound of formula (c) by condensing compound of formula (a) with compound of formula (b) in presence of dehydrating agent.
摘要:
The present invention relates to processes for preparation of narwedine, and use thereof in the synthesis of pure galantamine and salts thereof. The present invention further relates to a novel acid addition salt of narwedine isopropylene glycol ketal of (Formula I), which is a useful intermediate in the synthesis of narwedine and galantamine.
摘要:
Disclosed are processes towards Cabazitaxel (I) starting from 10-Deacetylbaccatin (III) that involve steps of either 7-OH monosilylation (passing through formula V) or 7,13-disilylation (passing through formulae XI, XII). Isopropanol Solvates of Cabazitaxel and processes to make this are also described.
摘要:
Disclosed are processes towards Cabazitaxel (I) starting from 10-Deacetylbaccatin (III) that involve steps of either 7-OH monosilylation (passing through formula V) or 7,13-disilylation (passing through formulae XI, XII). Isopropanol Solvates of Cabazitaxel and processes to make this are also described.
摘要:
Intermediates, process for their preparation and their use in the preparation of therapeutically effective antineoplastic agents, in particular Temsirolimus of formula (I).
摘要:
The present invention relates to process for the preparation of Paroxetine hydrochloride, wherein Paroxetine-N-phenyl carbamate is isolated as a crystalline solid and further subjected to hydrolysis and converted into Paroxetine hydrochloride. According to our present invention N-methyl paroxetine is reacted with phenylchloroformate in the presence of base, solvent or optionally crystallizing in a solvent to give pure Paroxetine-N-phenyl carbamate. It is subjected to hydrolysis in the presence of base to give pharmaceutically acceptable paroxetine hydrochloride salt.
摘要:
The present invention provides a novel solvate of sumatriptan succinate, wherein the solvate is an ethanol solvate and is characterized by using different solid state techniques such as powder X-ray diffraction, differential scanning calorimetry and thermo gravimetric analysis. In addition, the present invention discloses a process for the preparation of said solvate, and pure and improved quality of sumatriptan succinate employing said solvate.