PROCESS FOR THE PREPARATION OF TAFLUPROST AND INTERMEDIATES THEREOF
申请人:Scinopharm (Changshu) Pharmaceuticals, Ltd.
公开号:US20140046086A1
公开(公告)日:2014-02-13
The present invention provides efficient, economical and environmental friendly methods for synthesis of prostaglandin analogs including tafluprost and intermediates thereof. The invention involves a selective oxidation using in situ boronate ester protection and a unique crystallization method to remove the undesired isomers of fluorinated intermediates.
The invention provides a novel polymorphic form I of crystalline bimatoprost, method for preparation thereof and new crystalline intermediates in the preparation. This form I of crystalline bimatoprost is used in purification of crude bimatoprost and in storage of bimatoprost as active pharmaceutical intermediate. Use of the physical form of bimatoprost in the manufacture of a medicament is also disclosed.
Nitroderivatives of prostaglandins having improved pharmacological activity and enhanced tolerability are described. They can be employed for the treatment of glaucoma and ocular hypertension.
NOVEL PROCESSES FOR THE PREPARATION OF PROSTAGLANDIN AMIDES
申请人:Chinoin Zrt.
公开号:EP2723714B1
公开(公告)日:2017-06-21
CRYSTALLINE FORM OF BIMATOPROST, PREPARATION METHOD AND USE THEREOF
申请人:He Bingming
公开号:US20120270946A1
公开(公告)日:2012-10-25
The crystalline form A of Bimatoprost of formula I, its preparation method and use are provided. There are characteristic peaks where diffraction angles 2θ are 3.2+0.2°, 5.5+0.2°, 11.4+0.2°, 16.7+0.2°, 17.6+0.2°, 19.9+0.2°, 20.8±02° and 22.8+0.2° in the X-ray powder diffraction pattern of the crystalline form A.