(S)-2-((S)-2-((S)-2-((tert-Butoxycarbonyl)(methyl)amino)propanamido)-3,3-dimethylbutanoyl)-3-(((R)-1,2,3,4-tetrahydronaphthalen-1-yl)carbamoyl)-1,2,3,4-tetrahydroisoquinoline-7-carboxylic acid → (2S,4S)-1-((Benzyloxy)carbonyl)-4-((S)-2-((S)-2-((S)-2-((tert-butoxycarbonyl)(methyl)amino)propanamido)-3,3-dimethylbutanoyl)-3-(((R)-1,2,3,4-tetrahydronaphthalen-1-yl)carbamoyl)-1,2,3,4-tetrahydroisoquinoline-7-carboxamido)pyrrolidine-2-carboxylic acid

Participants

Role	Name	HCID	Charge
Reactant	(S)-2-((S)-2-((S)-2-((tert-Butoxycarbonyl)(methyl)amino)propanamido)-3,3-dimethylbutanoyl)-3-(((R)-1,2,3,4-tetrahydronaphthalen-1-yl)carbamoyl)-1,2,3,4-tetrahydroisoquinoline-7-carboxylic acid	HCID 86705870	—
Reactant	(2S,4S)-1-Benzyl 2-methyl 4-((S)-2-((S)-2-((S)-2-((tert-butoxycarbonyl)(methyl)amino)propanamido)-3,3-dimethylbutanoyl)-3-(((R)-1,2,3,4-tetrahydronaphthalen-1-yl)carbamoyl)-1,2,3,4-tetrahydroisoquinoline-7-carboxamido)pyrrolidine-1,2-dicarboxylate	HCID 86705871	—
Product	(2S,4S)-1-((Benzyloxy)carbonyl)-4-((S)-2-((S)-2-((S)-2-((tert-butoxycarbonyl)(methyl)amino)propanamido)-3,3-dimethylbutanoyl)-3-(((R)-1,2,3,4-tetrahydronaphthalen-1-yl)carbamoyl)-1,2,3,4-tetrahydroisoquinoline-7-carboxamido)pyrrolidine-2-carboxylic acid	HCID 86705872	99.5%

Reaction Steps

Following a procedure analogous to that for the synthesis of Compound K, (2S,4S)-1-benzyl 2-methyl 4-((S)-2-((S)-2-((S)-2-((tert-butoxycarbonyl)(methyl)amino)propanamido)-3,3-dimethylbutanoyl)-3-(((R)-1,2,3,4-tetrahydronaphthalen-1-yl)carbamoyl)-1,2,3,4-tetrahydroisoquinoline-7-carboxamido)pyrrolidine-1,2-dicarboxylate (192 mg, 0.21 mmol) was converted to the title compound (187 mg, 99%). MS (ESI+) m/z 895.5 (M+H)+.

Provenance & Evidence

DOI	10.6084/m9.figshare.5104873.v1
Patent number	US08889712B2
Source dataset	uspto-grants-2014_11
ORD ID	ord-ca3d4eee4e4c4041999469ff2f160c2c
Source note	uspto-grants-2014_11