1194396-71-8

Upstream product

• 1194047-64-7 (S,E)-1-((1S,5R,6R,7R)-3-butyl-7-((Z)-7-(ethylamino)-7-oxohept-2-en-1-yl)-2,4-dioxa-3-borabicyclo[3.2.1]octan-6-yl)-5-phenylpent-1-en-3-yl 6-bromohexanoate 
• 155206-00-1 bimatoprost 
• 22809-37-6 6-bromohexanoyl chloride 
• 1194047-63-6 (Z)-7-[(1S,5R,6R,7R)-3-butyl-6-[((E,3S)-3-hydroxy-5-phenylpent-1-enyl)]-2,4-dioxa-3-borabicyclo[3.2.1]octan-7-yl]-N-ethylhept-5-enamide 
• 74754-55-5 6-(nitrooxy)hexanoic acid 
• 502-44-3 hexahydro-2H-oxepin-2-one 
• 907625-06-3 6-(nitrooxy)hexanoyl chloride 

Relevant academic research and scientific papers

PROCESS FOR THE PREPARATION OF A NITRIC OXIDE DONATING PROSTAGLANDIN ANALOGUE

The present invention relates to a process for preparing the hexanoic acid, 6-(nitrooxy)-,(1S,2E)-3-[(1R,2R,3S,5R)-2-[(2Z)-7-(ethylamino)-7-oxo-2-hepten-1-yl]-3,5-dihydroxycyclopentyl]-1-(2-phenylethyl)-2-propen-1-yl ester of formula (I). In accordance with the present invention, the compound (I) can be efficiently prepared with high purity by coupling bimatoprost in a boronate protected form with 6-(nitrooxy)hexanoyl chloride having an high chemical purity and removing the boronate protecting group. The high chemical pure 6-(nitrooxy)hexanoyl chloride is prepared from 6-(nitrooxy)hexanoic acid having a high chemical purity. The invention also relates to a process for the preparation and purification of 6-(nitrooxy) hexanoic acid.

PROCESS FOR THE PREPARATION OF A NITRIC OXIDE DONATING PROSTAGLANDIN ANALOGUE

The present invention relates to a process for preparing the hexanoic acid, 6-(nitrooxy)-, (1S,2E)-3-[(1R,2R,3S,5R)-2-[(2Z)-7-(ethylamino)-7-oxo-2-hepten-1-yl]- 3,5-dihydroxycyclopentyl]-1-(2-phenylethyl)-2-propen-1-yl ester of formula (I). In accordance with the present invention, the compound (I) can be efficiently prepared with high purity by coupling bimatoprost in a boronate protected form with 6-(nitrooxy)hexanoyl chloride and removing the boronate protecting group. The 6-(nitrooxy)hexanoyl chloride intermediate is prepared by ring-opening reaction of 2-caprolactone and subsequent nitration of the 6-hydroxyhexanoic acid potassium salt with a mixture of HNO3 and H2SO4 in dichloromethane.

NITRIC OXIDE DONATING PROSTAMIDES

Nitroderivatives of prostaglandins having improved pharmacological activity and enhanced tolerability are described. They can be employed for the treatment of glaucoma and ocular hypertension.