Triethylamine → (2R,3R)-N1,N4-bis(2-(2-(2-(3-(3-(6,8-dichloro-2-methyl-1,2,3,4-tetrahydroisoquinolin-4-yl)phenylamino)-3-oxopropoxy)ethoxy)ethoxy)ethyl)-2,3-dihydroxysuccinamide

Participants

Reaction Conditions

Reaction Steps

To 3-(2-(2-(2-aminoethoxy)ethoxy)ethoxy)-N-(3-(6,8-dichloro-2-methyl-1,2,3,4-tetrahydroisoquinolin-4-yl)phenyl)propanamide (intermediate 179.7) (270 mg, 0.53 mmol, 2.00 equiv) in anhydrous DMF (5.0 mL) was added (2R,3R)-bis(2,5-dioxopyrrolidin-1-yl) 2,3-dihydroxysuccinate (prepared from (2R,3R)-tartaric acid as described in example 168) (91.0 mg, 0.26 mmol, 1.00 equiv) and triethylamine (0.3 mL) and the resulting solution was stirred for 2 h at 35° C. The resulting mixture was then concentrated under vacuum. The residue was purified by Prep-HPLC, to give 170 mg (56%) of a TFA salt of (2R,3R)—N1,N4-bis(2-(2-(2-(3-(3-(6,8-dichloro-2-methyl-1,2,3,4-tetrahydroisoquinolin-4-yl)phenylamino)-3-oxopropoxy)ethoxy)ethoxy)ethyl)-2,3-dihydroxysuccinamide as an off-white solid. 1H-NMR (300 MHz, CD3OD, ppm): δ 7.92 (s, 1H), 7.65 (s, 2H), 7.54 (d, J=1.5 Hz, 2H), 7.36-7.46 (m, 4H), 7.02 (dd, J 7.5, 1.2 Hz, 2H), 6.90 (s, 2H), 4.83-4.75 (m, 2H), 4.65-4.60 (m, 2H), 4.53 (s, 1H), 4.46 (m, 3H), 3.88-3.80 (m, 6H), 3.64-3.51 (m, 22H), 3.41-3.35 (m, 4H), 3.16 (s, 6H), 2.64 (t, J=6.0 Hz, 4H). MS (m/z): 1136 [M+H]+.

Provenance & Evidence