摘要:
The invention encompasses (3R,4S)-4-((4-benzyloxy)phenyl)-1-(4-fluorophenyl)-3-(3-(4-fluorophenyl)-3-oxopropyl)-2-azetidinone (Compound 2a) having an enantiomeric purity of at least about 97.5%. The invention also encompasses Compound 2a having a chemical purity of at least about 97%. The invention further encompasses processes for preparing Compound 2a from Compound 1 having the following formula: The invention also encompasses processes for preparing a compound having the following formula: from a compound having the following formula: wherein R is selected from the group consisting of: H or a hydroxyl protecting group. The invention also encompasses processes for preparing Compound 2a, preferably to form Compound 2a-Form 01. Also included are processes for preparing ezetimibe from Compound 2a-Form 01 or Compound 2a prepared according to the invention, compositions containing such ezetimibe, and methods for reducing cholesterol using such compositions
摘要:
The invention encompasses (3R,4S)-4-((4-benzyloxy)phenyl)-1-(4-fluorophenyl)-3-(3-(4-fluorophenyl)-3-oxopropyl)-2-azetidinone (Compound 2a) having an enantiomeric purity of at least about 97.5%. The invention also encompasses Compound 2a having a chemical purity of at least about 97%. The invention further encompasses processes for preparing Compound 2a from Compound 1 having the following formula: The invention also encompasses processes for preparing a compound having the following formula: from a compound having the following formula: wherein R is selected from the group consisting of: H or a hydroxyl protecting group. The invention also encompasses processes for preparing Compound 2a, preferably to form Compound 2a-Form 01. Also included are processes for preparing ezetimibe from Compound 2a-Form 01 or Compound 2a prepared according to the invention, compositions containing such ezetimibe, and methods for reducing cholesterol using such compositions.
摘要:
Salts and crystalline forms of several salts of Varenicline, i.e., Varenicline sulfate, Varenicline mesylate, and Varenicline fumarate, methods of preparing the solid states of Varenicline sulfate, Varenicline mesylate, and Varenicline fumarate, and processes for preparing Varenicline base from those Varenicline salts are provided.
摘要:
Provided is a novel synthesis of quetiapine, and pharmaceutically acceptable salts thereof, in which an alkali metal halide or siliyl halide is included in the reaction mixture.
摘要:
Salts and crystalline forms of several salts of Varenicline, i.e., Varenicline sulfate: are provided, along with methods of preparing the solid states and processes for preparing Varenicline base from those Varenicline salts.
摘要:
The invention provides an improved process for the preparation and purification of Varenicline and intermediates for the preparation of Varenicline.
摘要:
Crystalline forms of Varenicline Tosylate: are provided, along with processes for preparing those crystalline forms of Varenicline Tosylate, and processes for obtaining high purity Varenicline base using Varenicline Tosylate.
摘要:
Crystalline forms of Varenicline Tosylate, processes for preparing those crystalline forms of Varenicline Tosylate, and processes for obtaining high purity Varenicline base using Varenicline Tosylate are provided.
摘要:
Provided are processes for purifying (3R,4S)-4-(4-hydroxyprotected-phenyl)-1-(4-fluorophenyl)-3-[3-(4-fluorophenyl)-3-oxopropyl]azetidin-2-one having the following formula II wherein X and Y are hydrogen or a substituted or unsubstituted C1-8 alkyl; n is an integer between 0 and 3; and P is a hydroxyl protecting group. The Compound of formula II may be converted to an azetidinone compound, which is useful, for example, in reducing cholesterol in mammals.