HCID 66782717, compound → HCID 59159316, compound

Participants

Reaction Steps

The title compound was produced in analogy with example 83, steps D-F. Thus, (S)-2-(4-chloro-3-trifluoromethoxy-phenylamino)-propionic acid (intermediate 19) was coupled with {3-[(S)-4-(tert-butyl-dimethyl-silanyloxy)-6-aza-spiro[2.5]oct-6-yl]-propyl}-(2,2-dimethoxy-ethyl)-amine (example 83C) in step D, leading to (S)—N-{3-[(S)-4-(tert-butyl-dimethyl-silanyloxy)-6-aza-spiro[2.5]oct-6-yl]-propyl}-2-(4-chloro-3-trifluoromethoxy-phenylamino)-N-(2,2-dimethoxy-ethyl)-propionamide. This was cyclized to (S)-1-{3-[(S)-4-(tert-butyl-dimethyl-silanyloxy)-6-aza-spiro[2.5]oct-6-yl]-propyl}-4-(4-chloro-3-trifluoromethoxy-phenyl)-3-methyl-piperazin-2-one in step E. Finally, deprotection in step F afforded the title compound. Light yellow gum, MS: 476.2 (M+H)+.

Provenance & Evidence