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162537-11-3

Basic Information
CAS No.: 162537-11-3
Name: L-Valine,N-(methoxycarbonyl)-3-methyl-
Molecular Structure:
Molecular Structure of 162537-11-3 (L-Valine,N-(methoxycarbonyl)-3-methyl-)
Formula: C8H15NO4
Molecular Weight: 189.21
Synonyms: N-(Methoxycarbonyl)-L-tert-leucine;(S)-N-(methoxycarbonyl)-tert-leucine;
EINECS: 1308068-626-2
Density: 1.126 g/cm3
Melting Point: 109 °C
Boiling Point: 320.9 °C at 760 mmHg
Flash Point: 147.9 °C
Solubility:
Appearance: white solid
Hazard Symbols:
Risk Codes:
Safety:
Transport Information:
PSA: 75.63000
LogP: 1.23260
Synthetic route
20859-02-3

L-tert-Leucine

79-22-1

methyl chloroformate

162537-11-3

(S)-2-(methoxycarbonylamino)-3,3-dimethylbutanoic acid

Conditions
ConditionsYield
With sodium hydroxide In 1,4-dioxane; water at 60℃; for 18h; pH=8 - 9;100%
With sodium hydroxide In 1,4-dioxane; water at 25 - 60℃; for 22h;98%
Stage #1: L-tert-Leucine; methyl chloroformate With sodium hydroxide In 1,4-dioxane; water at 25 - 60℃; for 22h;
Stage #2: With hydrogenchloride In water
98%
62965-35-9

N-tert-butyloxycarbonyl-L-tert-leucine

162537-11-3

(S)-2-(methoxycarbonylamino)-3,3-dimethylbutanoic acid

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: hydrogenchloride / toluene; water / 3 h / 60 °C
2: sodium hydroxide / water / 2 h / 25 °C / pH 10 - 13
View Scheme
870-46-2

t-butoxycarbonylhydrazine

162537-11-3

(S)-2-(methoxycarbonylamino)-3,3-dimethylbutanoic acid

198904-77-7

(S)-N'-(2-methoxycarbonylamino-3,3-dimethyl-butyryl)-hydrazinecarboxylic acid tert-butyl ester

Conditions
ConditionsYield
With 4-methyl-morpholine; benzotriazol-1-ol; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride In ethyl acetate; N,N-dimethyl-formamide at 20℃; for 18.75h;100%
Stage #1: (S)-2-(methoxycarbonylamino)-3,3-dimethylbutanoic acid With 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride at 20℃; for 0.166667h; Inert atmosphere;
Stage #2: With 4-methyl-morpholine; benzotriazol-1-ol for 0.5h; Inert atmosphere;
Stage #3: t-butoxycarbonylhydrazine at 20℃; for 20h; Inert atmosphere;
94%
Stage #1: (S)-2-(methoxycarbonylamino)-3,3-dimethylbutanoic acid With benzotriazol-1-ol; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride In DMF (N,N-dimethyl-formamide) at 25℃; for 0.25h;
Stage #2: t-butoxycarbonylhydrazine With 4-methyl-morpholine In DMF (N,N-dimethyl-formamide) at 25℃; for 16h;
90%
630424-01-0

4-(5-bromo-pyridin-3-yloxymethyl)-pyrrolidine-2-carboxylic acid methyl ester

162537-11-3

(S)-2-(methoxycarbonylamino)-3,3-dimethylbutanoic acid

630424-03-2

4-(5-bromo-pyridin-3-yloxymethyl)-1-(2-methoxycarbonylamino-3,3-dimethyl-butyryl)-pyrrolidine-2-carboxylic acid methyl ester

Conditions
ConditionsYield
With benzotriazol-1-ol; O-(1H-benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium hexafluorophosphate; N-ethyl-N,N-diisopropylamine In acetonitrile at 20℃;100%
1335054-61-9

methyl [(S)-1-{[(2S,3S,5S)-5-{[(tert-butoxy)carbonyl]amino}-3-hydroxy-6-phenyl-1-[4-(quinolin-3-yl)phenyl]hexan-2-yl]amino}-3,3-dimethyl-1-oxobutan]-2-ylcarbamate

162537-11-3

(S)-2-(methoxycarbonylamino)-3,3-dimethylbutanoic acid

1335054-35-7

dimethyl (2S,2'S)-1,1'-((2S,3S,5S)-3-hydroxy-6-benzyl-1-(4-(quinolin-3-yl)phenyl)hexane-2,5-diyl)bis(azanediyl)bis(3,3-dimethyl-1-oxobutane-2,1-diyl)dicarbamate

Conditions
ConditionsYield
Stage #1: methyl [(S)-1-{[(2S,3S,5S)-5-{[(tert-butoxy)carbonyl]amino}-3-hydroxy-6-phenyl-1-[4-(quinolin-3-yl)phenyl]hexan-2-yl]amino}-3,3-dimethyl-1-oxobutan]-2-ylcarbamate With hydrogenchloride In 1,4-dioxane at 20℃; for 0.5h; Inert atmosphere;
Stage #2: (S)-2-(methoxycarbonylamino)-3,3-dimethylbutanoic acid With N-ethyl-N,N-diisopropylamine; 3-[(diethoxyphosphinyl)oxy]-1,2,3-benzotriazin-4(3H)-one at 20℃; for 16h; Inert atmosphere;
100%
1311412-52-8

C29H33FN2O4S

162537-11-3

(S)-2-(methoxycarbonylamino)-3,3-dimethylbutanoic acid

1311412-53-9

C32H38FN3O5S

Conditions
ConditionsYield
Stage #1: C29H33FN2O4S With hydrogenchloride In 1,4-dioxane at 20℃; for 1h;
Stage #2: (S)-2-(methoxycarbonylamino)-3,3-dimethylbutanoic acid With N-ethyl-N,N-diisopropylamine; HATU In dichloromethane at 0 - 20℃; for 3h;
96%
857900-54-0

{(S)-1-[N'-((2S,3S)-3-amino-2-hydroxy-4-phenyl-butyl)-N'-(4-pyridin-2-yl-benzyl)-hydrazinocarbonyl]-2,2-dimethyl-propyl}-carbamic acid methyl ester

162537-11-3

(S)-2-(methoxycarbonylamino)-3,3-dimethylbutanoic acid

198904-31-3

atazanavir

Conditions
ConditionsYield
With benzotriazol-1-ol; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride; N-ethyl-N,N-diisopropylamine In dichloromethane95%

1-[4-(pyridine-2-yl)-phenyl]-4(S)-hydroxy-(5S)-2,5-diamino-6-phenyl-2-azahexane

162537-11-3

(S)-2-(methoxycarbonylamino)-3,3-dimethylbutanoic acid

198904-31-3

atazanavir

Conditions
ConditionsYield
With pyridine; N-[(dimethylamino)-3-oxo-1H-1,2,3-triazolo[4,5-b]pyridin-1-yl-methylene]-N-methylmethanaminium hexafluorophosphate at 35℃; for 1.5h; Temperature; Concentration;91.6%
162537-11-3

(S)-2-(methoxycarbonylamino)-3,3-dimethylbutanoic acid

156732-15-9

(2S,3S,5S)-2-(N,N-dibenzylamino)-3-hydroxy-5-amino-1,6-diphenylhexane

methyl ((S)-1-(((2S,4S,5S)-5-(dibenzylamino)-4-hydroxy-1,6-diphenylhexan-2-yl)amino)-3,3-dimethyl-1-oxobutan-2-yl)carbamate

Conditions
ConditionsYield
With N-ethyl-N,N-diisopropylamine; N-[(dimethylamino)-3-oxo-1H-1,2,3-triazolo[4,5-b]pyridin-1-yl-methylene]-N-methylmethanaminium hexafluorophosphate In N,N-dimethyl-formamide at 0 - 20℃; for 4h;87%
Stage #1: (S)-2-(methoxycarbonylamino)-3,3-dimethylbutanoic acid With benzotriazol-1-ol; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride In dichloromethane; N,N-dimethyl-formamide at 0℃; for 0.25h;
Stage #2: (2S,3S,5S)-2-(N,N-dibenzylamino)-3-hydroxy-5-amino-1,6-diphenylhexane With N-ethyl-N,N-diisopropylamine In dichloromethane; N,N-dimethyl-formamide at 0 - 20℃; for 24h; Further stages.;
257907-05-4

N-[4-(2-pyridyl)phenylmethylidene]hydrazine

162537-11-3

(S)-2-(methoxycarbonylamino)-3,3-dimethylbutanoic acid

1003888-24-1

(S)-[2,2-dimethyl-1-(4-pyridin-2-yl-benzylidene-hydrazinocarbonyl)-propyl]-carbamic acid methyl ester

Conditions
ConditionsYield
Stage #1: (S)-2-(methoxycarbonylamino)-3,3-dimethylbutanoic acid With 4-methyl-morpholine; isobutyl chloroformate In dichloromethane at -30 - -25℃;
Stage #2: N-[4-(2-pyridyl)phenylmethylidene]hydrazine In dichloromethane at -25 - 20℃; for 2.5h;
85%
1239649-51-4

bis(1,1-dimethylethyl) (2S,2'S)-2,2'-[benzene-1,4-diylbis(1H-benzimidazole-5,2-diyl)]di(1-pyrrolidinecarboxylate)

162537-11-3

(S)-2-(methoxycarbonylamino)-3,3-dimethylbutanoic acid

1239653-22-5

dimethyl (benzene-1,4-diylbis{1H-benzimidazole-5,2-diyl(2S)-2,1-pyrrolidinediyl[(2S)-3,3-dimethyl-1-oxo-1,2-butanediyl]})biscarbamate

Conditions
ConditionsYield
Stage #1: bis(1,1-dimethylethyl) (2S,2'S)-2,2'-[benzene-1,4-diylbis(1H-benzimidazole-5,2-diyl)]di(1-pyrrolidinecarboxylate) With hydrogenchloride In 1,4-dioxane at 20℃; for 0.5h;
Stage #2: (S)-2-(methoxycarbonylamino)-3,3-dimethylbutanoic acid With N-ethyl-N,N-diisopropylamine; HATU In N,N-dimethyl-formamide at 20℃; for 2h;
85%
162537-11-3

(S)-2-(methoxycarbonylamino)-3,3-dimethylbutanoic acid

1-[4-(pyridin-2-yl)phenyl]-4(S)-hydroxy-5(S)-2,5-diamino-6-phenyl-2-azahexane trihydrochloride

198904-31-3

atazanavir

Conditions
ConditionsYield
With 4-methyl-morpholine; diisopropyl-carbodiimide In dichloromethane; isopropyl alcohol at -10 - 20℃; Product distribution / selectivity; Inert atmosphere;84%
With benzotriazol-1-ol; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride; N-ethyl-N,N-diisopropylamine In dichloromethane at 22 - 25℃; Reagent/catalyst; Large scale;82.1%
With O-(1,2-dihydro-2-oxo-1-pyridyl)-N,N,N',N'-tetramethyluronium tetrafluoroborate; N-ethyl-N,N-diisopropylamine 1.) CH2Cl2, 0 deg C, 20 min, 2.) CH2Cl2, overnight; Yield given. Multistep reaction;
919094-63-6

[5-(1-cyclopropanesulfonylaminocarbonyl-2-vinyl-cyclopropylcarbamoyl)-pyrrolidin-3-yl]-carbamic acid 9H-fluoren-9-ylmethyl ester hydrochloride

162537-11-3

(S)-2-(methoxycarbonylamino)-3,3-dimethylbutanoic acid

919094-46-5

C37H45N5O9S

Conditions
ConditionsYield
With N-ethyl-N,N-diisopropylamine; ((3H-[1,2,3]triazolo[4,5-b]pyridin-3-yl)oxy)tri(pyrrolidin-1-yl)phosphonium hexafluorophosphate(V) In acetonitrile at 20℃;82%
854754-00-0

methyl (S)-1-((2R,4S,5S)-5-amino-4-hydroxy-6-phenyl-1-(4-(pyridin-2-yl)phenyl)hexan-2-ylamino)-3,3-dimethyl-1-oxobutan-2-ylcarbamate

162537-11-3

(S)-2-(methoxycarbonylamino)-3,3-dimethylbutanoic acid

methyl (1S,4R,6S,7S,10S)-7-benzyl-1,10-ditert-butyl-6-hydroxy-2,9,12-trioxo-4-[4-(2-pyridinyl)benzyl]-13-oxa-3,8,11-triazatetradec-1-ylcarbamate

Conditions
ConditionsYield
With N-ethyl-N,N-diisopropylamine; 3-[(diethoxyphosphinyl)oxy]-1,2,3-benzotriazin-4(3H)-one In tetrahydrofuran at 25℃; for 16h;81%
854754-00-0

methyl (S)-1-((2R,4S,5S)-5-amino-4-hydroxy-6-phenyl-1-(4-(pyridin-2-yl)phenyl)hexan-2-ylamino)-3,3-dimethyl-1-oxobutan-2-ylcarbamate

162537-11-3

(S)-2-(methoxycarbonylamino)-3,3-dimethylbutanoic acid

methyl (1S,4R,6S,7S,10S)-7-benzyl-1,10-ditert-butyl-6-hydroxy-2,9,12-trioxo-4-[4-(2-pyridinyl)benzyl]-13-oxa-3,8,11-triazatetradec-1-ylcarbamate

Conditions
ConditionsYield
With N-ethyl-N,N-diisopropylamine; 3-[(diethoxyphosphinyl)oxy]-1,2,3-benzotriazin-4(3H)-one In tetrahydrofuran at 25℃; for 16h;81%

(S)-2-amino-1-phenyl-but-3-ene hydrochloride

162537-11-3

(S)-2-(methoxycarbonylamino)-3,3-dimethylbutanoic acid

1192510-21-6

(3S)-3-{[N-(methoxycarbonyl)-L-tert-leucinyl]amino}-4-phenyl-1-butene

Conditions
ConditionsYield
Stage #1: (S)-2-(methoxycarbonylamino)-3,3-dimethylbutanoic acid With 4-methyl-morpholine; isobutyl chloroformate In dichloromethane at -25 - -22℃;
Stage #2: (S)-2-amino-1-phenyl-but-3-ene hydrochloride In dichloromethane at 20℃; for 2h;
81%

C33H45N5O4S

162537-11-3

(S)-2-(methoxycarbonylamino)-3,3-dimethylbutanoic acid

methyl (1S)-1-{[((1S,3S,4S)-1-benzyl-3-hydroxy-4-{[(2S)-2-(3-{[2-(methoxymethyl)-1,3-thiazol-4-yl]methyl}-2-oxo-1-imidazolidinyl)-3,3-dimethylbutanoyl]amino}-5-phenylpentyl)amino]carbonyl}-2,2-dimethylpropylcarbamate

Conditions
ConditionsYield
With 4-methyl-morpholine; benzotriazol-1-ol; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride In DMF (N,N-dimethyl-formamide) at 0 - 25℃; for 16h;79%
Stage #1: C33H45N5O4S; (S)-2-(methoxycarbonylamino)-3,3-dimethylbutanoic acid With 4-methyl-morpholine; benzotriazol-1-ol; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride In DMF (N,N-dimethyl-formamide) at 0 - 25℃; for 16h;
Stage #2: With citric acid In water; ethyl acetate
79%
1311412-03-9

C33H36FN3O4S

162537-11-3

(S)-2-(methoxycarbonylamino)-3,3-dimethylbutanoic acid

1311410-69-1

C41H49FN4O7S

Conditions
ConditionsYield
With triethylamine; HATU In N,N-dimethyl-formamide at 20℃; for 1h;79%
With triethylamine; HATU In N,N-dimethyl-formamide at 20℃;
With triethylamine; HATU In N,N-dimethyl-formamide at 25 - 30℃; for 0.5h;26.97 g

(2S)-N-{(1S,3S,4S)-4-amino-1-benzyl-3-hydroxy-5-[4-(6-methyl-3-pyridinyl)phenyl]pentyl}-3,3-dimethyl-2-{3-[(6-methyl-2-pyridinyl)methyl]-2-oxo-1-imidazolidinyl}butanamide hydrochloride

162537-11-3

(S)-2-(methoxycarbonylamino)-3,3-dimethylbutanoic acid

methyl (1S)-1-[({(1S,2S,4S)-4-[((2S)-3,3-dimethyl-2-{3-[(6-methyl-2-pyridinyl)methyl]-2-oxo-1-imidazolidinyl}butanoyl)amino]-2-hydroxy-1-[4-(6-methyl-3-pyridinyl)benzyl]-5-phenylpentyl}amino)carbonyl]-2,2-dimethylpropylcarbamate

Conditions
ConditionsYield
With N-ethyl-N,N-diisopropylamine; 3-[(diethoxyphosphinyl)oxy]-1,2,3-benzotriazin-4(3H)-one In tetrahydrofuran at 25℃; for 16h;77%
With N-ethyl-N,N-diisopropylamine; 3-[(diethoxyphosphinyl)oxy]-1,2,3-benzotriazin-4(3H)-one In tetrahydrofuran at 25℃; for 16h;77%
144163-85-9

(2S,3S,5S)-2-amino-3-hydroxy-5-(t-butyloxycarbonylamino)-1,6-diphenylhexane

162537-11-3

(S)-2-(methoxycarbonylamino)-3,3-dimethylbutanoic acid

854754-32-8

methyl (1S)-1-[({(1S,2S,4S)-1-benzyl-4-[(tert-butoxycarbonyl)amino]-2-hydroxy-5-phenylpentyl}amino)carbonyl]-2,2-dimethylpropylcarbamate

Conditions
ConditionsYield
Stage #1: (S)-2-(methoxycarbonylamino)-3,3-dimethylbutanoic acid With 4-methyl-morpholine; benzotriazol-1-ol; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride In DMF (N,N-dimethyl-formamide) at 25℃; for 1h;
Stage #2: (2S,3S,5S)-2-amino-3-hydroxy-5-(t-butyloxycarbonylamino)-1,6-diphenylhexane In DMF (N,N-dimethyl-formamide) at 25℃; for 16h;
77%

(4-bromobenzyl)hydrazine dihydrochloride

25952-53-8

1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride

162537-11-3

(S)-2-(methoxycarbonylamino)-3,3-dimethylbutanoic acid

872703-59-8

{(1S)-1-[N'-(4-bromobenzyl)-hydrazinocarbonyl]-2,2-dimethyl-propyl}carbamic acid methyl ester

Conditions
ConditionsYield
Stage #1: (4-bromobenzyl)hydrazine dihydrochloride; (S)-2-(methoxycarbonylamino)-3,3-dimethylbutanoic acid With 4-methyl-morpholine; benzotriazol-1-ol In dichloromethane at 0℃; for 0.5h; Inert atmosphere;
Stage #2: 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride In dichloromethane at 0 - 25℃; for 15h; Inert atmosphere;
77%

3-bromobenzylhydrazine

162537-11-3

(S)-2-(methoxycarbonylamino)-3,3-dimethylbutanoic acid

882435-39-4

{(1S)-1-[N'-(3-bromo-benzyl)hydrazinocarbonyl]-2,2-dimethyl-propyl}carbamic acid methyl ester

Conditions
ConditionsYield
With 4-methyl-morpholine; benzotriazol-1-ol; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride In ethyl acetate at 20℃;76%
With 4-methyl-morpholine; benzotriazol-1-ol; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride In ethyl acetate at 20℃;76%

tert-butyl (1S,2S,4S)-4-amino-1-benzyl-2-hydroxy-5-[4-(2-pyridinyl)phenyl]pentylcarbamate hydrochloride

162537-11-3

(S)-2-(methoxycarbonylamino)-3,3-dimethylbutanoic acid

methyl (S)-1-((2S,4S,5S)-5-(tert-butoxycarbonyl)amino-4-hydroxy-6-phenyl-1-(4-(pyridin-2-yl)phenyl)hexan-2-ylamino)-3,3-dimethyl-1-oxobutan-2-ylcarbamate

Conditions
ConditionsYield
With N-ethyl-N,N-diisopropylamine; 3-[(diethoxyphosphinyl)oxy]-1,2,3-benzotriazin-4(3H)-one In tetrahydrofuran at 25℃; for 16h;75%
854754-04-4

methyl (S)-1-((2S,4S,5S)-5-amino-4-hydroxy-6-phenyl-1-(4-(pyridin-2-yl)phenyl)hexan-2-ylamino)-3,3-dimethyl-1-oxobutan-2-ylcarbamate

162537-11-3

(S)-2-(methoxycarbonylamino)-3,3-dimethylbutanoic acid

dimethyl (2S,2'S)-1,1'-((2S,3S,5S)-3-hydroxy-1-phenyl-6-(4-(pyridin-2-yl)phenyl)hexane-2,5-diyl)bis(azanediyl)bis(3,3-dimethyl-1-oxobutane-2,1-diyl)dicarbamate

Conditions
ConditionsYield
With N-ethyl-N,N-diisopropylamine; 3-[(diethoxyphosphinyl)oxy]-1,2,3-benzotriazin-4(3H)-one In tetrahydrofuran at 25℃; for 3h;75%
With N-ethyl-N,N-diisopropylamine; 3-[(diethoxyphosphinyl)oxy]-1,2,3-benzotriazin-4(3H)-one In tetrahydrofuran at 25℃; for 3h;75%
With N-ethyl-N,N-diisopropylamine; 3-[(diethoxyphosphinyl)oxy]-1,2,3-benzotriazin-4(3H)-one In tetrahydrofuran at 20℃; for 16h; Inert atmosphere;75%
162537-11-3

(S)-2-(methoxycarbonylamino)-3,3-dimethylbutanoic acid

437713-06-9

1-[4-(pyridin-2-yl)-phenyl]-4(S)-hydroxy-5(S)-2,5-diamino-6-phenyl-2-azahexane

198904-31-3

atazanavir

Conditions
ConditionsYield
Stage #1: (S)-2-(methoxycarbonylamino)-3,3-dimethylbutanoic acid With thionyl chloride; triethylamine In dichloromethane at 42℃; for 3h;
Stage #2: 1-[4-(pyridine-2-yl)phenyl]-(5S)-2,5-diamino-(4S)-hydroxy-6-phenyl-2-azahexane In dichloromethane at 20℃; Solvent; Temperature; Concentration;
74.2%

tert-butyl (1S,2S,4R)-4-amino-1-benzyl-2-hydroxy-5-[4-(2-pyridinyl)phenyl]pentylcarbamate hydrochloride salt

162537-11-3

(S)-2-(methoxycarbonylamino)-3,3-dimethylbutanoic acid

methyl (S)-1-((2R,4S,5S)-5-(tert-butoxycarbonyl)amino-4-hydroxy-6-phenyl-1-(4-(pyridin-2-yl)phenyl)hexan-2-ylamino)-3,3-dimethyl-1-oxobutan-2-ylcarbamate

Conditions
ConditionsYield
With N-ethyl-N,N-diisopropylamine; 3-[(diethoxyphosphinyl)oxy]-1,2,3-benzotriazin-4(3H)-one In tetrahydrofuran at 25℃; for 16h;74%
With N-ethyl-N,N-diisopropylamine; 3-[(diethoxyphosphinyl)oxy]-1,2,3-benzotriazin-4(3H)-one In tetrahydrofuran at 25℃; for 16h;74%
162537-11-3

(S)-2-(methoxycarbonylamino)-3,3-dimethylbutanoic acid

144164-11-4

(2S,3S,5S)-5-Amino-2-(N-((5-thiazolyl)-methoxycarbonyl)amino)-3-hydroxy-1,6-diphenylhexane

N1-((1S,3S,4S)-1-benzyl-3-hydroxy-5-phenyl-4-{[(1,3-thiazol-5-ylmethoxy)carbonyl]amino}pentyl)-N2-(methoxycarbonyl)-3-methyl-L-valinamide

Conditions
ConditionsYield
With 4-methyl-morpholine; benzotriazol-1-ol; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride In N,N-dimethyl-formamide at 20℃; for 16h;73.5%
854757-30-5

methyl (1S)-1-[({(1S,3S,4S)-4-amino-3-hydroxy-1-[4-(5-methyl-2-pyridinyl)benzyl]-5-phenylpentyl}amino)carbonyl]-2,2-dimethylpropylcarbamate

162537-11-3

(S)-2-(methoxycarbonylamino)-3,3-dimethylbutanoic acid

methyl (1S,4S,5S,7S,10S)-4-benzyl-1,10-ditert-butyl-5-hydroxy-7-[4-(5-methyl-2-pyridinyl)benzyl]-2,9,12-trioxo-13-oxa-3,8,11-triazatetradec-1-ylcarbamate

Conditions
ConditionsYield
With N-ethyl-N,N-diisopropylamine; 3-[(diethoxyphosphinyl)oxy]-1,2,3-benzotriazin-4(3H)-one In tetrahydrofuran at 25℃; for 72h;73%
With N-ethyl-N,N-diisopropylamine; 3-[(diethoxyphosphinyl)oxy]-1,2,3-benzotriazin-4(3H)-one In tetrahydrofuran at 25℃; for 72h;73%

di-tert-butyl 2,2'-(((sulfonylbis(oxy))bis(3,1-phenylene))bis(1H-imidazole-5,2-diyl))(2S,2'S)-bis(pyrrolidine-1-carboxylate)

162537-11-3

(S)-2-(methoxycarbonylamino)-3,3-dimethylbutanoic acid

bis(3-(2-((S)-1-((R)-2-(methoxycarbonylamino)-3,3-dimethylbutanoyl)pyrrolidine-2-yl)-1H-imidazol-5-yl)phenyl)sulfate

Conditions
ConditionsYield
Stage #1: di-tert-butyl 2,2'-(((sulfonylbis(oxy))bis(3,1-phenylene))bis(1H-imidazole-5,2-diyl))(2S,2'S)-bis(pyrrolidine-1-carboxylate) With trifluoroacetic acid In dichloromethane at 20℃; for 0.5h;
Stage #2: (S)-2-(methoxycarbonylamino)-3,3-dimethylbutanoic acid With benzotriazol-1-ol; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride; N-ethyl-N,N-diisopropylamine In dichloromethane at 20℃;
73%
857904-38-2

(2S,3S)-N-((1S,2S)-1-benzyl-2-hydroxy-3-{1-[4-(2-pyridinyl)benzyl]hydrazino}propyl)-3-methyl-2-[2-oxo-3-(4-quinolinylmethyl)-1-imidazolidinyl]pentanamide

162537-11-3

(S)-2-(methoxycarbonylamino)-3,3-dimethylbutanoic acid

tert-butyl (1S)-1-({2-[(2S,3S)-2-hydroxy-3-({(2S,3S)-3-methyl-2-[2-oxo-3-(4-quinolinylmethyl)-1-imidazolidinyl]pentanoyl}amino)-4-phenylbutyl]-2-[4-(2-pyridinyl)benzyl]hydrazino}carbonyl)-2,2-dimethylpropylcarbamate

Conditions
ConditionsYield
Stage #1: (2S,3S)-N-((1S,2S)-1-benzyl-2-hydroxy-3-{1-[4-(2-pyridinyl)benzyl]hydrazino}propyl)-3-methyl-2-[2-oxo-3-(4-quinolinylmethyl)-1-imidazolidinyl]pentanamide; (S)-2-(methoxycarbonylamino)-3,3-dimethylbutanoic acid With triethylamine; 3-[(diethoxyphosphinyl)oxy]-1,2,3-benzotriazin-4(3H)-one In tetrahydrofuran; DMF (N,N-dimethyl-formamide) at 25℃; for 4h;
Stage #2: With sodium hydrogencarbonate In water; ethyl acetate for 0.5h;
72%
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  • Methoxycarbonyl-L-tert-leucine

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    162537-11-3

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Chemistry

Molecular structure of L-Valine,N-(methoxycarbonyl)-3-methyl- (CAS NO.162537-11-3) is:

Product Name: L-Valine,N-(methoxycarbonyl)-3-methyl-
CAS Registry Number: 162537-11-3
Molecular Formula: C8H15NO4
Molecular Weight: 189.21
Melting Point: 109 °C
Surface Tension:  38.1 dyne/cm 
Density: 1.126 g/cm3 
Flash Point: 147.9 °C 
Enthalpy of Vaporization: 61.86 kJ/mol 
Boiling Point: 320.9 °C at 760 mmHg 
Vapour Pressure: 6.39E-05 mmHg at 25°C
Product Categories: Amino Acid Derivatives;Amino Acids 13C, 2H, 15N;Amino Acids & Derivatives;Chiral Reagents

Specification

 L-Valine,N-(methoxycarbonyl)-3-methyl- , its cas register number is 162537-11-3. It also can be called Methoxycarbonyl-L-tert-leucine ; (S)-2-Methoxycarbonylamino-3,3-dimethylbutyric acid .

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