[ CAS No. 70642-86-3 ] {[proInfo.proName]}

Name: 70642-86-3|Boc-D-Tyr-OH|97%
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2D 3D

Structure of 70642-86-3 * Storage: {[proInfo.prStorage]}

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Quality Control of [ 70642-86-3 ]

COA NMR CNMR HPLC LC-MS

Related Doc. of [ 70642-86-3 ]

SDS Specification

Alternatived Products of [ 70642-86-3 ]

Product Details of [ 70642-86-3 ]

CAS No. :	70642-86-3	MDL No. :	MFCD00063030
Formula :	C₁₄H₁₉NO₅	Boiling Point :	-
Linear Structure Formula :	-	InChI Key :	CNBUSIJNWNXLQQ-LLVKDONJSA-N
M.W :	281.30	Pubchem ID :	1549481
Synonyms :

Calculated chemistry of [ 70642-86-3 ]

Physicochemical Properties

Num. heavy atoms :	20
Num. arom. heavy atoms :	6
Fraction Csp3 :	0.43
Num. rotatable bonds :	7
Num. H-bond acceptors :	5.0
Num. H-bond donors :	3.0
Molar Refractivity :	73.37
TPSA :	95.86 Å²

Pharmacokinetics

GI absorption :	High
BBB permeant :	No
P-gp substrate :	No
CYP1A2 inhibitor :	No
CYP2C19 inhibitor :	No
CYP2C9 inhibitor :	No
CYP2D6 inhibitor :	No
CYP3A4 inhibitor :	No
Log Kp (skin permeation) :	-6.09 cm/s

Lipophilicity

Log Po/w (iLOGP) :	2.06
Log Po/w (XLOGP3) :	2.71
Log Po/w (WLOGP) :	1.91
Log Po/w (MLOGP) :	1.42
Log Po/w (SILICOS-IT) :	1.18
Consensus Log Po/w :	1.86

Druglikeness

Lipinski :	0.0
Ghose :	None
Veber :	0.0
Egan :	0.0
Muegge :	0.0
Bioavailability Score :	0.56

Water Solubility

Log S (ESOL) :	-3.05
Solubility :	0.25 mg/ml ; 0.000888 mol/l
Class :	Soluble
Log S (Ali) :	-4.38
Solubility :	0.0118 mg/ml ; 0.000042 mol/l
Class :	Moderately soluble
Log S (SILICOS-IT) :	-2.6
Solubility :	0.71 mg/ml ; 0.00252 mol/l
Class :	Soluble

Medicinal Chemistry

PAINS :	0.0 alert
Brenk :	0.0 alert
Leadlikeness :	0.0
Synthetic accessibility :	2.68

Safety of [ 70642-86-3 ]

Signal Word:	Warning	Class:	N/A
Precautionary Statements:	P261-P305+P351+P338	UN#:	N/A
Hazard Statements:	H302-H315-H319-H335	Packing Group:	N/A
GHS Pictogram:

Application In Synthesis of [ 70642-86-3 ]

* All experimental methods are cited from the reference, please refer to the original source for details. We do not guarantee the accuracy of the content in the reference.

Upstream synthesis route of [ 70642-86-3 ]
Downstream synthetic route of [ 70642-86-3 ]

[ 70642-86-3 ] Synthesis Path-Upstream 1~11

1
[ 24424-99-5 ]
[ 556-02-5 ]
[ 70642-86-3 ]

Reference： [1] Tetrahedron Letters, 2017, vol. 58, # 21, p. 2031 - 2033
[2] Synthesis, 2002, # 13, p. 1867 - 1870
[3] Tetrahedron Letters, 2007, vol. 48, # 26, p. 4509 - 4513
[4] Journal of Medicinal Chemistry, 2011, vol. 54, # 16, p. 5680 - 5693
[5] Chemistry - A European Journal, 2014, vol. 20, # 10, p. 2953 - 2959

2
[ 556-02-5 ]
[ 70642-86-3 ]

Reference： [1] Patent: US6362165, 2002, B1,
[2] Journal of Organic Chemistry, 2000, vol. 65, # 16, p. 5037 - 5042
[3] Patent: EP976722, 2000, A1,

3
[ 76757-90-9 ]
[ 70642-86-3 ]

Reference： [1] Journal of Organic Chemistry, 2000, vol. 65, # 16, p. 5037 - 5042

4
[ 687-51-4 ]
[ 126028-15-7 ]
[ 70642-86-3 ]
[ 126028-18-0 ]

Reference： [1] Tetrahedron Letters, 1989, vol. 30, # 21, p. 2787 - 2790

5
[ 24424-99-5 ]
[ 70642-86-3 ]

Reference： [1] Journal of Organic Chemistry, 2000, vol. 65, # 16, p. 5037 - 5042

6
[ 3728-20-9 ]
[ 70642-86-3 ]

Reference： [1] Journal of Organic Chemistry, 2000, vol. 65, # 16, p. 5037 - 5042

7
[ 556-02-5 ]
[ 58632-95-4 ]
[ 70642-86-3 ]

Reference： [1] Tetrahedron, 1992, vol. 48, # 23, p. 4793 - 4822

8
[ 556-02-5 ]
[ 70642-86-3 ]

Reference： [1] Acta Chimica Academiae Scientiarum Hungaricae, 1981, vol. 107, # 1, p. 7 - 9

9
[ 1070-19-5 ]
[ 3417-91-2 ]
[ 3978-80-1 ]
[ 70642-86-3 ]

Reference： [1] Acta Chimica Academiae Scientiarum Hungaricae, 1981, vol. 107, # 1, p. 7 - 9

10
[ 64-67-5 ]
[ 70642-86-3 ]
[ 76757-92-1 ]

Reference： [1] Journal of Medicinal Chemistry, 1982, vol. 25, # 1, p. 45 - 50

11
[ 74-96-4 ]
[ 70642-86-3 ]
[ 76757-92-1 ]

Reference： [1] Journal of Organic Chemistry, 1983, vol. 48, # 22, p. 4127 - 4129

[ 70642-86-3 ] Synthesis Path-Downstream 1~10

1
[ 74-96-4 ]
[ 70642-86-3 ]
[ 76757-92-1 ]

Reference： [1]Journal of Organic Chemistry,1983,vol. 48,p. 4127 - 4129

2
[ 64-67-5 ]
[ 70642-86-3 ]
[ 76757-92-1 ]

Reference： [1]Journal of Medicinal Chemistry,1982,vol. 25,p. 45 - 50

3
[ 1070-19-5 ]
[ 3417-91-2 ]
[ 3978-80-1 ]
[ 70642-86-3 ]

Reference： [1]Acta Chimica Academiae Scientiarum Hungaricae,1981,vol. 107,p. 7 - 9

4
[ 76757-90-9 ]
[ 70642-86-3 ]

Reference： [1]Journal of Organic Chemistry,2000,vol. 65,p. 5037 - 5042

5
[ 3728-20-9 ]
[ 70642-86-3 ]

Reference： [1]Journal of Organic Chemistry,2000,vol. 65,p. 5037 - 5042

6
[ 70642-86-3 ]
[ 68641-49-6 ]
[ 2050-92-2 ]
[ 135497-21-1 ]

Yield	Reaction Conditions	Operation in experiment
	In tetrahydrofuran; ethyl acetate;	Step 39a. N-(t-Butyloxycarbonyl)-R-tyrosine-di-n-pentylamide N-t-Butyloxycarbonyl-R-tyrosine (4.5 g, 15.4 mmol) was stirred with BOPCl (3.92 g, 15.4 mmol) and dipentylamine (7.9 mL, 39 mmol) in 100 mL of THF at 4 C. and allowed to warm to room temperature overnight. After one day, additional BOPCl (800 mg) was added and, after two days, the volatiles were evaporated. The residue, dissolved in EtOAc, was extracted with 0.1M citric acid solution, 0.1M sodium carbonate (Na2 CO3) solution, and water; then dried over MgSO4, filtered and concentrated in vacuo to yield an oil, 5.67 g, 13.4 mmol (87.4%). Rf =0.45 (2:1 hexanes-EtOAc). [alpha]D =+2.8 (c=0.76, MeOH). MS(CI) m/e 421(m+H)+. 1 H NMR(CDCl3,300 MHz) delta 0.88(apparent q,J=7 Hz,6H), 1.15-1.32(m, 10H), 1.36-1.47(m,11H), 2.80-3.07(m,5H), 3.38-3.48 (m,1H), 4.72 (apparent q,J=6 Hz,1H), 5.41(d,J=8 Hz,1H), 6.70(d,J=8 Hz,2H), 7.02(d, J=8 Hz,2H).

Reference： [1]Patent: US5346907,1994,A

7
[ 70642-86-3 ]
[ 1012341-50-2 ]

Reference： [1]Patent: CN105523964,2016,A

8
[ 70642-86-3 ]
[ 83766-88-5 ]
[ 1414025-67-4 ]

Yield	Reaction Conditions	Operation in experiment
52%	With boron trifluoride diethyl etherate; In toluene; at 20.0℃; for 0.5h;	Carboxylic acid (0.2 g, 1.64 mmol), tert-butoxypyridine (0.33 g, 2.21 mmol) and boron trifluoride diethyl etherate (0.31 g, 2.21 mmol) in dry PhCH3 (2 mL) were added to a 20-ml vial. The reaction mixture was then allowed to stir at room temperature for 30 min before quenching with anhydrous NaHCO3. The reaction mixture was diluted with ethyl acetate (30 mL), then washed with water (20 mL), followed by brine (20 mL). The organic layer was dried over anhydrous sodium sulfate and carefully concentrated under reduced pressure. The resulting residue was then purified by flash column chromatography on silica gel with 0:4 to 1:4 dichloromethane/hexane as eluent to yield the desired product 5a as a colorless oil.

Reference： [1]Tetrahedron,2018,vol. 74,p. 3748 - 3754

9
[ 70642-86-3 ]
[ 1445324-30-0 ]

Yield	Reaction Conditions	Operation in experiment
	Multi-step reaction with 2 steps 1.1: triethylamine; dicyclohexyl-carbodiimide / N,N-dimethyl-formamide / 12 h / 0 - 26 °C / Inert atmosphere 2.1: formic acid / 26 °C / Inert atmosphere 2.2: 120 °C / Inert atmosphere

Reference： [1]Cox, Joshua B.; Kimishima, Aoi; Wood, John L. [Journal of the American Chemical Society, 2019, vol. 141, # 1, p. 25 - 28]

10
[ 70642-86-3 ]
[ 3728-20-9 ]
C₂₄H₃₀N₂O₇ [ No CAS ]

Reference： [1]Journal of the American Chemical Society,2019,vol. 141,p. 25 - 28

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[ 70642-86-3 ]

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Response
Code	Phrase
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P321
P322
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P342	If experiencing respiratory symptoms:
P350	Gently wash with plenty of soap and water.
P351	Rinse cautiously with water for several minutes.
P352	Wash with plenty of soap and water.
P353	Rinse skin with water/shower.
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P361	Remove/Take off immediately all contaminated clothing.
P362	Take off contaminated clothing and wash before reuse.
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P372	Explosion risk in case of fire.
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P376	Stop leak if safe to do so. Oxidising gases (section 2.4) 1
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P378
P380	Evacuate area.
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P390	Absorb spillage to prevent material damage.
P391	Collect spillage. Hazardous to the aquatic environment
P301 + P310	IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician.
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P301 + P330 + P331	IF SWALLOWED: Rinse mouth. Do NOT induce vomiting.
P302 + P334	IF ON SKIN: Immerse in cool water/wrap in wet bandages.
P302 + P350	IF ON SKIN: Gently wash with plenty of soap and water.
P303 + P361 + P353	IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower.
P304 + P312	IF INHALED: Call a POISON CENTER or doctor/physician if you feel unwell.
P304 + P340	IF INHALED: Remove victim to fresh air and Keep at rest in a position comfortable for breathing.
P304 + P341	IF INHALED: If breathing is difficult, remove victim to fresh air and keep at rest in a position comfortable for breathing.
P305 + P351 + P338	IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
P306 + P360	IF ON CLOTHING: Rinse Immediately contaminated CLOTHING and SKIN with plenty of water before removing clothes.
P307 + P311	IF exposed: call a POISON CENTER or doctor/physician.
P308 + P313	IF exposed or concerned: Get medical advice/attention.
P309 + P311	IF exposed or if you feel unwell: call a POISON CENTER or doctor/physician.
P332 + P313	IF SKIN irritation occurs: Get medical advice/attention.
P333 + P313	IF SKIN irritation or rash occurs: Get medical advice/attention.
P335 + P334	Brush off loose particles from skin. Immerse in cool water/wrap in wet bandages.
P337 + P313	IF eye irritation persists: Get medical advice/attention.
P342 + P311	IF experiencing respiratory symptoms: call a POISON CENTER or doctor/physician.
P370 + P376	In case of fire: Stop leak if safe to Do so.
P370 + P378	In case of fire:
P370 + P380	In case of fire: Evacuate area.
P370 + P380 + P375	In case of fire: Evacuate area. Fight fire remotely due to the risk of explosion.
P371 + P380 + P375	In case of major fire and large quantities: Evacuate area. Fight fire remotely due to the risk of explosion.
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P401
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P402 + P404	Store in a dry place. Store in a closed container.
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P410 + P412	Protect from sunlight. Do not expose to temperatures exceeding 50 oC/122oF.
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Physical hazards
Code	Phrase
H200	Unstable explosive
H201	Explosive; mass explosion hazard
H202	Explosive; severe projection hazard
H203	Explosive; fire, blast or projection hazard
H204	Fire or projection hazard
H205	May mass explode in fire
H220	Extremely flammable gas
H221	Flammable gas
H222	Extremely flammable aerosol
H223	Flammable aerosol
H224	Extremely flammable liquid and vapour
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H226	Flammable liquid and vapour
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H230	May react explosively even in the absence of air
H231	May react explosively even in the absence of air at elevated pressure and/or temperature
H240	Heating may cause an explosion
H241	Heating may cause a fire or explosion
H242	Heating may cause a fire
H250	Catches fire spontaneously if exposed to air
H251	Self-heating; may catch fire
H252	Self-heating in large quantities; may catch fire
H260	In contact with water releases flammable gases which may ignite spontaneously
H261	In contact with water releases flammable gas
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Health hazards
Code	Phrase
H300	Fatal if swallowed
H301	Toxic if swallowed
H302	Harmful if swallowed
H303	May be harmful if swallowed
H304	May be fatal if swallowed and enters airways
H305	May be harmful if swallowed and enters airways
H310	Fatal in contact with skin
H311	Toxic in contact with skin
H312	Harmful in contact with skin
H313	May be harmful in contact with skin
H314	Causes severe skin burns and eye damage
H315	Causes skin irritation
H316	Causes mild skin irritation
H317	May cause an allergic skin reaction
H318	Causes serious eye damage
H319	Causes serious eye irritation
H320	Causes eye irritation
H330	Fatal if inhaled
H331	Toxic if inhaled
H332	Harmful if inhaled
H333	May be harmful if inhaled
H334	May cause allergy or asthma symptoms or breathing difficulties if inhaled
H335	May cause respiratory irritation
H336	May cause drowsiness or dizziness
H340	May cause genetic defects
H341	Suspected of causing genetic defects
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H351	Suspected of causing cancer
H360	May damage fertility or the unborn child
H361	Suspected of damaging fertility or the unborn child
H361d	Suspected of damaging the unborn child
H362	May cause harm to breast-fed children
H370	Causes damage to organs
H371	May cause damage to organs
H372	Causes damage to organs through prolonged or repeated exposure
H373	May cause damage to organs through prolonged or repeated exposure
Environmental hazards
Code	Phrase
H400	Very toxic to aquatic life
H401	Toxic to aquatic life
H402	Harmful to aquatic life
H410	Very toxic to aquatic life with long-lasting effects
H411	Toxic to aquatic life with long-lasting effects
H412	Harmful to aquatic life with long-lasting effects
H413	May cause long-lasting harmful effects to aquatic life
H420	Harms public health and the environment by destroying ozone in the upper atmosphere

[ CAS No. 70642-86-3 ] {[proInfo.proName]}

Quality Control of [ 70642-86-3 ]

Related Doc. of [ 70642-86-3 ]

Product Details of [ 70642-86-3 ]

Calculated chemistry of [ 70642-86-3 ]

Physicochemical Properties

Pharmacokinetics

Lipophilicity

Druglikeness

Water Solubility

Medicinal Chemistry

Safety of [ 70642-86-3 ]

Application In Synthesis of [ 70642-86-3 ]

[ 70642-86-3 ] Synthesis Path-Upstream 1~11

[ 70642-86-3 ] Synthesis Path-Downstream 1~10

Related Functional Groups of [ 70642-86-3 ]

Amino Acid Derivatives

Precautionary Statements-General

Prevention

Response

Storage

Disposal

Physical hazards

Health hazards

Environmental hazards

Inquiry

Related Functional Groups of
[ 70642-86-3 ]