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CAS 20859-02-3
(S)-2-amino-3,3-dimethylbutanoic acid
Codes：GRAZ-028
Application context (from source-drug indications)
丙型肝炎Grazoprevir HydrateHIV感染Grazoprevir Hydrate慢性丙型肝炎Grazoprevir Hydrate肾功能不全Grazoprevir Hydrate
Source drugs (routes using this intermediate)
| Drug | Tier | Expiry |
|---|---|---|
| Grazoprevir HydrateGrazoprevir Hydrate | Tier C — Watch / trade | - |
Position in synthesis routes (up/downstream chain)
Ordered by route registration; left → right is the synthesis direction. The highlighted node is the current CAS; others link to their own profiles.
1-(tert-butyl) 2-methyl (2S,4R)-4-((3-chloro-7-methoxyquinoxalin-2-yl)oxy)pyrrolidine-1,2-dicarboxylate→methyl (33R,35S,91R,92R,5S)-5-(tert-butyl)-17-methoxy-4,7-dioxo-2,8-dioxa-6-aza-1(2,3)-quinoxalina-3(3,1)-pyrrolidina-9(1,2)-cyclopropanacyclotetradecaphane-35-carboxylate→(33R,35S,91R,92R,5S)-5-(tert-butyl)-17-methoxy-4,7-dioxo-2,8-dioxa-6-aza-1(2,3)-quinoxalina-3(3,1)-pyrrolidina-9(1,2)-cyclopropanacyclotetradecaphane-35-carboxylic acid→(1R,2R)-2-(pent-2-yn-1-yl)cyclopropan-1-ol→(S)-2-amino-3,3-dimethylbutanoic acid→(R)-3,3-dimethyl-2-((((1R,2R)-2-(pent-2-yn-1-yl)cyclopropoxy)carbonyl)amino)butanoic acid→(S)-2-((((1R,2R)-2-(5-(3-(((3R,5S)-1-(tert-butoxycarbonyl)-5-(methoxycarbonyl)pyrrolidin-3-yl)oxy)-6-methoxyquinoxalin-2-yl)pent-4-yn-1-yl)cyclopropoxy)carbonyl)amino)-3,3-dimethylbutanoic acid→(S)-2-((((1R,2R)-2-(5-(3-(((3R,5S)-1-(tert-butoxycarbonyl)-5-(methoxycarbonyl)pyrrolidin-3-yl)oxy)-6-methoxyquinoxalin-2-yl)pentyl)cyclopropoxy)carbonyl)amino)-3,3-dimethylbutanoic acid→(1R,2S)-1-amino-N-(cyclopropylsulfonyl)-2-vinylcyclopropane-1-carboxamide
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