摘要:
The present invention relates to a novel crystalline cefdinir potassium dihydrate, to a process for its preparation and to a method of preparing pure cefdinir via the crystalline salt.
摘要:
The present invention provides a process for preparing orlistat from amino orlistat using Pivaloyl Formic Anhydride (PFA) as an alkanoylating agent.
摘要:
The present invention provides a process for preparing orlistat from amino orlistat using Pivaloyl Formic Anhydride (PFA) as an alkanoylating agent.
摘要:
The present invention relates to a process for the preparation of cis-intermediate of Formula II, which is useful synthetic intermediates in the preparation of tadalafil.
摘要:
The present invention relates to a process for the preparation of cis-intermediates of Formula II, (Formula II) wherein R1 represents hydrogen, (un)substituted alkyl, alkenyl, aryl, and X represents a leaving group, which are useful synthetic intermediates in the preparation of tetracyclic compounds having phosphodiesterase inhibitory activity.
摘要:
The invention discloses processes for the preparation of rivaroxaban and its pharmaceutically acceptable salts, solvates, and hydrates thereof. The invention also relates to novel intermediates for the preparation of rivaroxaban.
摘要:
The present invention relates to an improved process for the preparation of 1-bromo-3,5-dimethyl adamantane of formula (III), which is an useful intermediate for synthesis of 1-amino-3,5-dimethyl adamantane of formula (I) or pharmaceutically acceptable salt thereof.
摘要:
The invention relates to improved process for the preparation of fesoterodine and its pharmaceutically acceptable salt, specifically fesoterodine fumarate of formula (1). The invention relates to solid state forms of a novel salt of fesoterodine and process for the preparation thereof. The invention also relates to highly pure fesoterodine fumarate substantially free of impurity X at RRT 1.37. The invention also provides solid particles of pure fesoterodine fumarate wherein 90 volume-percent of the particles (D90) have a size of higher than 200 microns.