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Purity:99%
The invention provides a medical interme...
The inventors disclose here a novel, fac...
The inventors disclose here a novel, fac...
We report a facile approach to the synth...
H-DOPA(acetonide)-OH
N-(9H-fluoren-2-ylmethoxycarbonyloxy)succinimide
(2S)-3-(2,2-dimethyl-1,3-benzodioxol-5-yl)-2-(9H-fluoren-9-ylmethoxycarbonylamino)propanoic acid
Conditions | Yield |
---|---|
In
tetrahydrofuran; water;
at 0 ℃;
for 2h;
|
74% |
H-DOPA(acetonide)-OH; N-(9H-fluoren-2-ylmethoxycarbonyloxy)succinimide;
In
tetrahydrofuran; water;
at 0 ℃;
for 2h;
Cooling with ice;
With
hydrogenchloride;
In
water;
pH=2 - 3;
|
2,2-dimethoxy-propane
N-(9-fluorenylmethyloxycarbonyl)-3,4-dihydroxy-L-phenylalanine
(2S)-3-(2,2-dimethyl-1,3-benzodioxol-5-yl)-2-(9H-fluoren-9-ylmethoxycarbonylamino)propanoic acid
Conditions | Yield |
---|---|
In
toluene;
at 80 ℃;
for 0.416667h;
under 225.023 Torr;
Temperature;
Reagent/catalyst;
Solvent;
Pressure;
Inert atmosphere;
Sealed tube;
Molecular sieve;
|
90 %Chromat. |
N-(9H-fluoren-2-ylmethoxycarbonyloxy)succinimide
levodopa
(2S)-3-(3,4-dihydroxyphenyl)-2-(2,2,2-trifluoroacetamido)propanoic acid
N-phthalimide-3,4-dihydroxy-L-phenylalanine methyl ester
levodopa
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