1,2-Oxazole-5-carboxylic acid → Isoxazole-5-carboxylic acid (1-{(rac)-6-[5-chloro-3-fluoro-2-(2-methyl-2H-tetrazol-5-yl)-phenyl]-2,3-dihydro-benzo[b]thiophen-3-ylcarbamoyl}-cyclopropyl)-amide

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Reaction Steps

In analogy to the procedure described for the preparation of intermediate A-1 [B], 1-amino-cyclopropanecarboxylic acid{(rac)-6-[5-chloro-3-fluoro-2-(2-methyl-2H-tetrazol-5-yl)-phenyl]-2,3-dihydro-benzo[b]thiophen-3-yl}-amide (example 61) has been coupled with isoxazole-5-carboxylic acid to yield the title compound as light yellow oil. MS: 540.1 (MH+, 1Cl).

Provenance & Evidence