发明名称 |
Process for the production of bimatoprost |
摘要 |
The present invention relates to a process for the purification of crude bimatoprost to obtain pure bimatoprost comprising a chromatography, preferably a chromatography using an achiral stationary phase and an eluent comprising an alcohol and an apolar solvent; and crystallization of the product obtained the chromatography to obtain pure bimatoprost. |
申请公布号 |
US8772544(B2) |
申请公布日期 |
2014.07.08 |
申请号 |
US200912999112 |
申请日期 |
2009.06.10 |
申请人 |
Sandoz AG |
发明人 |
De Souza Dominic;Albert Martin;Sturm Hubert |
分类号 |
C07C233/05 |
主分类号 |
C07C233/05 |
代理机构 |
Manelli Selter PLLC |
代理人 |
Melcher Jeffrey S.;Manelli Selter PLLC |
主权项 |
1. A method for the purification of crude bimatoprost according to formula (I)comprising at least the steps of:
(a) subjecting crude bimatoprost according to formula (I) to chromatography to form a product, wherein the chromatography is carried out using an achiral stationary phase comprising silica and an eluent comprising an alcohol and an apolar solvent, and wherein the alcohol is selected from methanol and ethanol and the apolar solvent is selected from heptane, hexane and cylcohexane; and (b) crystallizing the product obtained in step (a) from a solvent selected from ethers, acetonnitrile, alcohols, esters, or mixtures of any of these solvents to form pure bimatoprost containing less than 0.2% in total of any combination of 15R-bimatoprost and 5, 6-trans-bimatoprost. |
地址 |
Basel CH |