← Back to patent-cliff list
CAS 63-91-2
L-phenylalanine
Codes: RITO-027, FOSAC-009
Application context (from source-drug indications)
Chronic hepatitis CParitaprevir/Ombitasvir/RitonavirHepatitis CParitaprevir/Ombitasvir/RitonavirDecompensated cirrhosisParitaprevir/Ombitasvir/RitonavirRenal impairmentParitaprevir/Ombitasvir/RitonavirFibrosisParitaprevir/Ombitasvir/RitonavirEnd-stage renal diseaseParitaprevir/Ombitasvir/RitonavirHIV infectionDarunavir Ethanolate/RitonavirHIV infectionRitonavirKaposi's sarcomaRitonavirBreast cancerRitonavirHIV infectionFosamprenavir Calcium
Source drugs (routes using this intermediate)
| Drug | Tier | Expiry |
|---|---|---|
| Paritaprevir/Ombitasvir/Ritonavir | Tier C — Watch / trade | - |
| Darunavir Ethanolate/Ritonavir | Tier C — Watch / trade | - |
| Ritonavir | Tier C — Watch / trade | - |
| Fosamprenavir Calcium | 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.
4-nitrophenyl (thiazol-5-ylmethyl) carbonate→thiazol-5-ylmethyl ((2S,3S,5S)-5-amino-3-hydroxy-1,6-diphenylhexan-2-yl)carbamate→(S)-2-(3-((2-isopropylthiazol-4-yl)methyl)-3-methylureido)-3-methylbutanoic acid→L-phenylalanine→(S)-benzyl 2-(dibenzylamino)-3-phenylpropanoate→benzylmagnesium chloride→(S,E)-5-amino-2-(dibenzylamino)-1,6-diphenylhex-4-en-3-one→(2S,3S,5S)-5-amino-2-(dibenzylamino)-1,6-diphenylhexan-3-ol→tert-butyl ((2S,4S,5S)-5-(dibenzylamino)-4-hydroxy-1,6-diphenylhexan-2-yl)carbamate→tert-butyl ((2S,4S,5S)-5-amino-4-hydroxy-1,6-diphenylhexan-2-yl)carbamate succinate
L-phenylalanine→tert-butyl ((2S,4S,5S)-5-amino-4-hydroxy-1,6-diphenylhexan-2-yl)carbamate succinate→(S)-2-amino-3-phenylpropan-1-ol→(S)-1-chloro-3-phenylpropan-2-amine→(S)-tert-butyl (1-chloro-3-phenylpropan-2-yl)carbamate→(S)-tert-butyl (1-cyano-3-phenylpropan-2-yl)carbamate→(S)-tert-butyl (1-oxo-3-phenylpropan-2-yl)carbamate→(2-nitroethyl)benzene→tert-butyl ((2S,4S,5S)-4-hydroxy-5-nitro-1,6-diphenylhexan-2-yl)carbamate→tert-butyl ((2S,4S,5S)-5-amino-4-hydroxy-1,6-diphenylhexan-2-yl)carbamate
4-nitrophenyl (thiazol-5-ylmethyl) carbonate→thiazol-5-ylmethyl ((2S,3S,5S)-5-amino-3-hydroxy-1,6-diphenylhexan-2-yl)carbamate→(S)-2-(3-((2-isopropylthiazol-4-yl)methyl)-3-methylureido)-3-methylbutanoic acid→L-phenylalanine→(S)-benzyl 2-(dibenzylamino)-3-phenylpropanoate→benzylmagnesium chloride→(S,E)-5-amino-2-(dibenzylamino)-1,6-diphenylhex-4-en-3-one→(2S,3S,5S)-5-amino-2-(dibenzylamino)-1,6-diphenylhexan-3-ol→tert-butyl ((2S,4S,5S)-5-(dibenzylamino)-4-hydroxy-1,6-diphenylhexan-2-yl)carbamate→tert-butyl ((2S,4S,5S)-5-amino-4-hydroxy-1,6-diphenylhexan-2-yl)carbamate succinate
L-phenylalanine→tert-butyl ((2S,4S,5S)-5-amino-4-hydroxy-1,6-diphenylhexan-2-yl)carbamate succinate→(S)-2-amino-3-phenylpropan-1-ol→(S)-1-chloro-3-phenylpropan-2-amine→(S)-tert-butyl (1-chloro-3-phenylpropan-2-yl)carbamate→(S)-tert-butyl (1-cyano-3-phenylpropan-2-yl)carbamate→(S)-tert-butyl (1-oxo-3-phenylpropan-2-yl)carbamate→(2-nitroethyl)benzene→tert-butyl ((2S,4S,5S)-4-hydroxy-5-nitro-1,6-diphenylhexan-2-yl)carbamate→tert-butyl ((2S,4S,5S)-5-amino-4-hydroxy-1,6-diphenylhexan-2-yl)carbamate
4-nitrophenyl (thiazol-5-ylmethyl) carbonate→thiazol-5-ylmethyl ((2S,3S,5S)-5-amino-3-hydroxy-1,6-diphenylhexan-2-yl)carbamate→(S)-2-(3-((2-isopropylthiazol-4-yl)methyl)-3-methylureido)-3-methylbutanoic acid→L-phenylalanine→(S)-benzyl 2-(dibenzylamino)-3-phenylpropanoate→benzylmagnesium chloride→(S,E)-5-amino-2-(dibenzylamino)-1,6-diphenylhex-4-en-3-one→(2S,3S,5S)-5-amino-2-(dibenzylamino)-1,6-diphenylhexan-3-ol→tert-butyl ((2S,4S,5S)-5-(dibenzylamino)-4-hydroxy-1,6-diphenylhexan-2-yl)carbamate→tert-butyl ((2S,4S,5S)-5-amino-4-hydroxy-1,6-diphenylhexan-2-yl)carbamate succinate
L-phenylalanine→tert-butyl ((2S,4S,5S)-5-amino-4-hydroxy-1,6-diphenylhexan-2-yl)carbamate succinate→(S)-2-amino-3-phenylpropan-1-ol→(S)-1-chloro-3-phenylpropan-2-amine→(S)-tert-butyl (1-chloro-3-phenylpropan-2-yl)carbamate→(S)-tert-butyl (1-cyano-3-phenylpropan-2-yl)carbamate→(S)-tert-butyl (1-oxo-3-phenylpropan-2-yl)carbamate→(2-nitroethyl)benzene→tert-butyl ((2S,4S,5S)-4-hydroxy-5-nitro-1,6-diphenylhexan-2-yl)carbamate→tert-butyl ((2S,4S,5S)-5-amino-4-hydroxy-1,6-diphenylhexan-2-yl)carbamate
tert-butyl ((2S,3R)-3-hydroxy-4-(isobutylamino)-1-phenylbutan-2-yl)carbamate→4-nitrobenzenesulfonyl chloride→(S)-tetrahydrofuran-3-yl ((2S,3R)-3-hydroxy-4-(N-isobutyl-4-nitrophenylsulfonamido)-1-phenylbutan-2-yl)carbamate→L-phenylalanine→(S)-2-(dibenzylamino)-3-phenylpropanal→(2S,3S)-1-chloro-3-(dibenzylamino)-4-phenylbutan-2-ol hydrochloride→(2S,3S)-3-amino-1-chloro-4-phenylbutan-2-ol hydrochloride→tert-butyl ((S)-1-((S)-oxiran-2-yl)-2-phenylethyl)carbamate→N-((2R,3S)-3-amino-2-hydroxy-4-phenylbutyl)-N-isobutyl-4-nitrobenzenesulfonamide hydrochloride→(S)-tetrahydrofuran-3-yl 1H-imidazole-1-carboxylate→(S)-tetrahydrofuran-3-yl ((2S,3R)-4-((N-isobutyl-4-nitrophenyl)sulfonamido)-1-phenyl-3-(phosphonooxy)butan-2-yl)carbamate→(S)-tetrahydrofuran-3-yl ((2S,3R)-4-((4-amino-N-isobutylphenyl)sulfonamido)-1-phenyl-3-(phosphonooxy)butan-2-yl)carbamate
Intermediates available on this site
No listed intermediates for this target yet — send an RFQ directly and it will enter our matching pool.
This is a CAS-level registry record: registrations across routes are merged. Supplier offers and buyer demands will be matched on this CAS as the primary key.