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HomeProduct name listD-Tryptophan methyl ester hydrochloride

D-Tryptophan methyl ester hydrochloride

  • CAS NO.:14907-27-8
  • Empirical Formula: C12H15ClN2O2
  • Molecular Weight: 254.71
  • MDL number: MFCD00038992
  • EINECS: 639-469-7
  • SAFETY DATA SHEET (SDS)
  • Update Date: 2024-10-25 16:21:11
D-Tryptophan methyl ester hydrochloride Structural

What is D-Tryptophan methyl ester hydrochloride?

Chemical properties

Off-White Crystalline Solid

The Uses of D-Tryptophan methyl ester hydrochloride

D-Tryptophan Methyl Ester Hydrochloride is an intermediate in the synthesis of Tryptophan derivatives.

The Uses of D-Tryptophan methyl ester hydrochloride

Intermediate for the synthesis of Tryptophan derivatives.

What are the applications of Application

D-Tryptophan Methyl Ester Hydrochloride is an intermediate in the synthesis of Tryptophan derivatives

What are the applications of Application

The Pictet–Spengler reaction of D-Tryptophan methyl ester hydrochloride with piperonal in various solvents has been extensively studied, the solvent-dependence of stereoselectivities could be principally attributed to the solubility difference between cis and trans products 5-HCl in the used solvent, the best stereoselectivity (cis/trans = 99:1) was obtained using nitromethane or acetonitrile as the solvent. Cialis, 12a-epi-Cialis, deuterium-labeled, 3,3,12a-d3-Cialis, and 3,3,12a-d3-12a-epi-Cialis could be efficiently synthesized from D-Tryptophan methyl ester hydrochloride[1].

Synthesis

D-tryptophan and methyl sulfonate are reacted in a solvent at 25 to 100°C to generate D-tryptophan methyl ester sulfonate. Dissolve the obtained D-tryptophan methyl ester sulfonate in water and adjust the pH to alkaline with alkali to convert it into D-tryptophan methyl ester. After the reaction, extract with an organic solvent, add a desiccant for dehydration, and obtain an extract containing D-tryptophan methyl ester. Finally, dry hydrogen chloride gas is passed into the obtained extract containing D-tryptophan methyl ester for reaction to obtain D-tryptophan methyl ester hydrochloride. D-Tryptophan methyl ester hydrochloride

References

[1] Xiao-Xin Shi. “Highly stereoselective Pictet–Spengler reaction of d-tryptophan methyl ester with piperonal: convenient syntheses of Cialis (Tadalafil), 12a-epi-Cialis, and their deuterated analogues.” Tetrahedron, asymmetry 19 4 (2008): Pages 435-442.

Properties of D-Tryptophan methyl ester hydrochloride

Melting point: 213-216 °C(lit.)
Density  1.337g/cm3 at 20℃
refractive index  -19 ° (C=5, MeOH)
storage temp.  Keep in dark place,Sealed in dry,Room Temperature
solubility  DMSO, (Slightly), Methanol (Slightly), Water (Slightly)
form  Solid
color  White to Off-White
optical activity [α]20/D 18°, c = 5 in methanol
Water Solubility  Soluble in water (150 mg/ml), dimethyl sulfoxide and methanol (50 mg/ml).
InChI InChI=1/C12H14N2O2.ClH/c1-16-12(15)10(13)6-8-7-14-11-5-3-2-4-9(8)11;/h2-5,7,10,14H,6,13H2,1H3;1H/t10-;/s3
CAS DataBase Reference 14907-27-8(CAS DataBase Reference)

Safety information for D-Tryptophan methyl ester hydrochloride

Signal word Warning
Pictogram(s)
ghs
Exclamation Mark
Irritant
GHS07
GHS Hazard Statements H315:Skin corrosion/irritation
H319:Serious eye damage/eye irritation
H335:Specific target organ toxicity, single exposure;Respiratory tract irritation
Precautionary Statement Codes P280:Wear protective gloves/protective clothing/eye protection/face protection.
P302+P352:IF ON SKIN: wash with plenty of soap and water.

Computed Descriptors for D-Tryptophan methyl ester hydrochloride

InChIKey XNFNGGQRDXFYMM-MEQOOBBNNA-N
SMILES C12C=CC=CC=1NC=C2C[C@@H](N)C(=O)OC.Cl |&1:10,r|

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