Process Development toward a Pro-Drug of Buprenorphine
作者:Sophie L. Berrell、Stephen J. Byard、John S. Carey、Antonio Codina、J. Alf Davis、Katherine Filer、Alasdair Garnett、Robin Marshall、Stephen J. Martin、John Mykytiuk、Julian Northen、Urvish Pandya、Gary Reid、Catherine Smyth、Lesa Watson
DOI:10.1021/acs.oprd.9b00025
日期:2019.5.17
solid-state properties of the pro-drug were fully investigated, and extensive polymorph screening was undertaken. An unusual low-temperature endothermic event was observed in the differential scanning calorimetry thermogram. This low-temperature event was further investigated using variable-temperature X-ray powder diffraction and variable-temperature solid-state nuclearmagneticresonancespectroscopy. It
Ester derivatives of the phenolic hydroxyl group of buprenorphine can be used in the treatment of opiate dependency and/or moderate to severe pain. The esters have an enhanced bioavailability, an enhanced duration of action, and a reduced abuse potential.
Ester derivatives of the phenolic hydroxyl group of buprenorphine can be used in the treatment of opiate dependency and/or moderate to severe pain. The esters have an enhanced bioavailability, an enhanced duration of action, and a reduced abuse potential.
Lipase-Catalyzed Regioselective Ester Hydrolysis as a Key Step in an Alternative Synthesis of a Buprenorphine Pro-Drug
作者:John S. Carey、Emily McCann
DOI:10.1021/acs.oprd.9b00026
日期:2019.5.17
alternative route toward a hemiadipic acid pro-drug of buprenorphine. Buprenorphine was acylated with adipic acid monoethyl ester. A regioselective ester hydrolysis using C. antarctica lipase B cleaved the sterically less-hindered alkyl ester in the presence of the more labile phenolic ester. In this manner the pro-drug could be isolated in good yield and high purity.