Process for producing 1-triazole-2-butanol derivatives
申请人:Mimura Mitsuo
公开号:US08871942B2
公开(公告)日:2014-10-28
An object is to provide a process for producing the compound of formula 1 in higher yield by the ring-opening addition reaction of epoxytriazole with amine under mild conditions without using a large excess of 4-methylenepiperidine. The process for producing (2R,3R)-2-(2,4-difluorophenyl)-3-(4-methylenepiperidin-1-yl)-1-(1H-1,2,4-triazol-1-yl)butan-2-ol or an acid addition salt thereof comprises reacting (2R,3S)-2-(2,4-difluorophenyl)-3-methyl-2-[(1H-1,2,4-triazol-1-yl)methyl]oxirane with an acid addition salt of 4-methylenepiperidine in a reaction solvent in the presence of a hydroxide of an alkali metal or an alkaline earth metal selected from the group consisting of lithium, sodium, calcium, and strontium, or a hydrate thereof.
(EN) An antifungal agent containing as the active ingredient a compound represented by general formula (I) or an acid-addition salt thereof, in particular, one having an absolute configuration of (R, R) at the asymmetric carbon atoms or an acid-addition salt thereof.(FR) Agent antifongique contenant en tant qu'ingrédient actif un composé représenté par la formule générale (I) ou un sel d'addition acide de celui-ci, en particulier un sel ayant une configuration absolue de (R, R) au niveau des atomes de carbone asymétrique ou un sel d'addition acide.
The development of a safe, robust process for the preparation of ravuconazole (1), an antifungal agent, is described. The discovery and development of procedures enabling the efficient synthesis of multikilogram quantities of 1 and the process demonstration through plant scale preparations are presented. A controlled means to prepare a Grignard reagent and utilization of Fourier Transform Infrared spectroscopy (FTIR) monitoring to safely conduct the reaction is featured.