(R)-tert-butoxycarbonylamino-{4-[2-(tetrahydropyran-2-yloxy)-ethoxy]-phenyl}-acetic acid → (2S,3S)-N-(2-Fluoro-4-iodo-phenyl)-2-{(R)-4-[4-(2-hydroxy-1-hydroxymethyl-ethoxy)-phenyl]-2,5-dioxo-imidazolidin-1-yl}-3-phenyl-butyramide

참여 물질

반응 단계

Prepared by the same method as described in example 1 except that (i) 2-fluoro-4-iodoaniline was used in place of 4-bromoaniline in step 2, (ii) (R)-tert-butoxycarbonylamino-[4-(2-hydroxy-1-hydroxymethyl-ethoxy)-phenyl]-acetic acid (prepared as described in example 160) was used in place of (R)-tert-butoxycarbonylamino-(4-methoxy-phenyl)-acetic acid in step 4, (iii) the diol functionality contained in (2S,3S)-2-{(R)-2-amino-2-[4-(2-hydroxy-1-hydroxymethyl-ethoxy)-phenyl]-acetylamino}-N-(2-fluoro-4-iodo-phenyl)-3-phenyl-butyramide was temporarily protected as the bis-trimethylsilyl ether (performed as described in example 114) prior to performing step 6, and (iv) acid catalyzed hydrolysis of (2S,3S)-2-{(R)-2,5-dioxo-4-[4-(2-trimethylsilanyloxy-1-trimethylsilanyloxymethyl-ethoxy)-phenyl]-imidazolidin-1-yl}-N-(2-fluoro-4-iodo-phenyl)-3-phenyl-butyramide was performed as described in example 114 prior to purification and isolation of (2S,3S)—N-(2-fluoro-4-iodo-phenyl)-2-{(R)-4-[4-(2-hydroxy-1-hydroxymethyl-ethoxy)-phenyl]-2,5-dioxo-imidazolidin-1-yl}-3-phenyl-butyramide in step 6.

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