Diphenylmethyl aminoxy-[3-fluoro-4,5-bis-[(2-methoxy-ethoxy)-methoxy]-phenyl]-acetate → [[[1-[3-Fluoro-4,5-bis-[(2-methoxy-ethoxy)-methoxy]-phenyl]-2-oxo-2-(diphenylmethoxy)-ethyl]-oxy]-imino]-[2-[(triphenylmethyl)-amino]-thiazol-4-yl]-acetic acid

Participants

Reaction Steps

0.640 g of the product of Step D and and 0.474 g of oxo-[2-[(triphenylmethyl)-amino]-thiazol-4-yl]-acetic acid (Belgian Patent Application No. 864,828) were stirred for 4 and a half hours under nitrogen and at ambient temperature in the presence of 20 ml of methanol. Then, the solvent was eliminated, and the residue was chromatographed on silica, eluting with a dichloromethane-methanol (95-5) mixture to obtain 0.612 g of the expected product with a Rf=0.35 [eluant: dichloromethane-methanol (9-1)].

Provenance & Evidence