PROCESSES AND INTERMEDIATES FOR THE PREPARATIONS OF ISOMER FREE PROSTAGLANDINS
申请人:CHIROGATE INTERNATIONAL INC.
公开号:US20150051410A1
公开(公告)日:2015-02-19
Novel processes for the preparation of a compound of Formula I-2 substantially free of the 5,6-trans isomer:
wherein
R
2
, R
3
and R
4
are as defined in the specification are provided. Novel intermediates for the preparations of isomer free Prostaglandins and derivatives thereof are also provided.
The present application relates to amine salts of prostaglandin analogs and their uses for the preparation of substantially pure prostaglandin analogs. Specific embodiments relate to amine salts of tafluprost and their uses for the preparation of substantially pure tafluprost.
A fluorine-containing prostaglandin derivative of the formula (1) (or a salt thereof) and a medicine containing it, particularly, a preventive or therapeutic medicine for an eye disease: ##STR1## wherein A is a vinylene group or the like, R.sup.1 is an aryloxyalkyl group or the like, R.sup.2 and R.sup.3 are hydrogen atoms or the like, and Z is OR.sup.4 (wherein OR.sup.4 is a hydrogen atom or an alkyl group) or the like.