Traxoprodil → 1-[(1s,2s)-2-Hydroxy-2-(4-hydroxyphenyl)-1-methylethyl]-4-phenylpiperidin-4-ol

Beteiligte Stoffe

Reaktionsschritte

A preferred compound, (1S,2S)-1-(4-hydroxyphenyl)-2-(4-hydroxy-4-phenylpiperidin-1-yl)-1-propanol ((1S,2S) free base), and its tartrate salt, can be prepared as described in U.S. Pat. No. 5,272,160, referred to above. The resolution of racemic 1-(4-hydroxyphenyl)-2-(4-hydroxy-4-phenylpiperidin-1-yl)-1-propanol to form the (1S,2S) free base and the corresponding (1R,2R) enantiomer can be carried out as described in U.S. Pat. No. 6,008,233 (issued Dec. 28, 1999), referred to above, and as exemplified in Example 1 below.

Herkunft & Nachweise