Methyl iodide → (S)-2-({(3S,8S)-7-[2-(acetyl-methyl-amino)-4-methyl-thiazole-5-sulfonyl]-3-[4-(3,4-dichloro-benzyloxy)-phenyl]-2,3,6,7,8,9-hexahydro-[1,4]dioxino[2,3-g]isoquinoline-8-carbonyl}-amino)-3-(4'-cyano-biphenyl-4-yl)-propionic acid methyl ester

Participants

Reaction Steps

(S)-2-({(3S,8S)-7-(2-Acetylamino-4-methyl-thiazole-5-sulfonyl)-3-[4-(3,4-dichloro-benzyloxy)-phenyl]-2,3,6,7,8,9-hexahydro-[1,4]dioxino[2,3-g]isoquinoline-8-carbonyl}-amino)-3-(4′-cyano-biphenyl-4-yl)-propionic acid methyl ester (29 mg) was reacted with methyl iodide and K2CO3 in DMF to give (S)-2-({(3S,8S)-7-[2-(acetyl-methyl-amino)-4-methyl-thiazole-5-sulfonyl]-3-[4-(3,4-dichloro-benzyloxy)-phenyl]-2,3,6,7,8,9-hexahydro-[1,4]dioxino[2,3-g]isoquinoline-8-carbonyl}-amino)-3-(4′-cyano-biphenyl-4-yl)-propionic acid methyl ester (LCMS (m/z): 982) according to General Procedure O. This product (26 mg) was hydrolyzed according to General Procedure B to furnish the title compound (22 mg). LCMS (m/z): 0.924.

Provenance & Evidence