2-Acetylamino-5-methyl-thiazole-4-sulfonyl chloride → (S)-2-({(S)-7-(2-acetylamino-5-methyl-thiazole-4-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)-3-(4′-Cyano-biphenyl-4-yl)-2-({(S)-3-[4-(3,4-dichloro-benzyloxy)-phenyl]-2,3,6,7,8,9-hexahydro-[1,4]dioxino[2,3-g]isoquinoline-8-carbonyl}-amino)-propionic acid methyl ester (130 mg) was reacted with 2-acetylamino-5-methyl-thiazole-4-sulfonyl chloride (54 mg) to furnish (S)-2-({(S)-7-(2-acetylamino-5-methyl-thiazole-4-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:. 965) according to General Procedure E. The title compound (16 mg) was prepared by the hydrolysis of (S)-2-({(S)-7-(2-acetylamino-5-methyl-thiazole-4-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 (20 mg) using General Procedure B. LCMS (m/z): 952.

Provenance & Evidence