Succinic anhydride → HCID 59916552, compound

Participants

Reaction Steps

A solution of 68 mg (0.1 mmol) of N-tert-butyl-1,2,3,4,4a(S),5,6,7,8,8a(S)-decahydro-2-[2(R)-hydroxy-3(S)-[[3-(methanesulfonyl)-N-[(3-pyridyl)carbonyl]-L-valyl]amino]-4-phenylbutyl]-3(S)-isoquinolinecarboxamide (example 7) in 10 ml of tetrahydrofuran was treated with 10 mg (1 mmol) of succinic anhydride (Aldrich 23,960-0) and heated at reflux overnight. The volatiles were evaporated under reduced pressure and the residue chromatographed on silica eluting with dichloromethane/methanol (19:1) to give 53 mg of N-tert-butyl-2-[2(R)-(3-carboxypropionyloxy)-3(S)-[[3-(methanesulfonyl)-N-[(3-pyridyl)carbonyl]-L-valyl]amino]-4-phenylbutyl]-1,2,3,4,4a(S),5,6,7,8,8a(S)decahydro-3(S)-isoquinolinecarboxamide as a foam, [M+H]+ 784.5.

Provenance & Evidence