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Dayang Chem (Hangzhou) Co.,Ltd.

DayangChem exported this product to many countries and regions at best price. If you are looking for the material's manufacturer or supplier in China, DayangChem is your best choice. Pls contact with us freely for getting detailed product spe

O-tert-Butyl-L-threonine tert-butyl ester

Cas:5854-78-4

Min.Order:1 Kilogram

FOB Price: $3.0

Type:Lab/Research institutions

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Jinan Finer Chemical Co., Ltd

Product informations Product Name H-THR(TBU)-OTBU CAS No. 5854-78-4

H-THR(TBU)-OTBU | O-tert-Butyl-L-threonine tert-butyl ester

Cas:5854-78-4

Min.Order:1 Gram

FOB Price: $8.0

Type:Lab/Research institutions

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Chemwill Asia Co., Ltd.

Our main production base is located in Xuzhou industry park. We are certified both to the ISO 9001 and ISO 14001 Standards, have a safety management system in place.Our R&D team masters core technology for process-design of target building block

O-tert-Butyl-L-threonine tert-butyl ester

Cas:5854-78-4

Min.Order:5 Kiloliter

FOB Price: $1.2 / 5.0

Type:Manufacturers

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Henan Tianfu Chemical Co., Ltd.

H-THR(TBU)-OTBU Basic information Product Name: H-THR(TBU)-OTBU Synonyms: H-THR(TBU)-OTBU;O-TERT-BUTYL-L-THREONINE TERT-BUTYL ESTER;O-T-BUTYL-L-THREONINE T-BUTYL ES

H-THR(TBU)-OTBU

Cas:5854-78-4

Min.Order:1 Kilogram

Negotiable

Type:Lab/Research institutions

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Zhuozhou Wenxi import and Export Co., Ltd

WITH US,YOUR MONEY IN SAFE,YOUR BUSINESS IN SAFE 1)Quick Response Within 12 hours; 2)Quality Guarantee: All products are strictly tested by our QC, confirmed by QA and approved by third party lab in China, USA, Canada, Germany, UK, Italy, France et

Wholesale price CAS 5854-78-4 with best price

Cas:5854-78-4

Min.Order:1 Kilogram

FOB Price: $139.0 / 210.0

Type:Trading Company

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Hangzhou JINLAN Pharm-Drugs Technology Co., Ltd

We can provide GMP validation service that complies with SFDA, FDA, WHO and EU EMPA.Excellent registration team could help us easlily to register our products in different countries.If you and your customer are interested in some products or need CMO

O-tert-Butyl-L-threonine tert-Butyl Ester manufacturer/supplier

Cas:5854-78-4

Min.Order:1 Gram

Negotiable

Type:Trading Company

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Shanghai Upbio Tech Co.,Ltd

1.No Less 8 years exporting experience. Clients can 100% received goods 2.Lower Price with higher quality 3,Free sample 4,We are sincerely responsible for the "product quality" and "After Service" Upbio is Specialized

L-Threonine,O-(1,1-dimethylethyl)-, 1,1-dimethylethyl ester 5854-78-4

Cas:5854-78-4

Min.Order:1 Kilogram

Negotiable

Type:Lab/Research institutions

inquiry

Baoji Guokang Healthchem co.,ltd

Our company has been in existence for 10 years since its establishment. We have our own unique team. The company integrates independent research and development, production and sales. We have established famous brands at home and abroad. At prese

Agrochemical Intermediates, H-THR(TBU)-OTBU CAS:5854-78-4

Cas:5854-78-4

Min.Order:1 Kilogram

FOB Price: $51.0 / 54.0

Type:Trading Company

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Henan Wentao Chemical Product Co., Ltd.

Henan Wentao Chemical Product Co.,Ltd is Located in Zhengzhou High-tech Development Zone with import and export license, We passed ISO 9001:2008 as well, Henan Wentao has developed more than 1000 compounds, which are widely used in the fields of prod

L-Threonine,O-(1,1-dimethylethyl)-, 1,1-dimethylethyl ester

Cas:5854-78-4

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

Hangzhou J&H Chemical Co., Ltd.

J&H CHEM R&D center can offer custom synthesis according to the contract research and development services for the fine chemicals, pharmaceutical, biotechnique and some of the other chemicals. J&H CHEM has some Manufacturing base in Jia

L-Threonine,O-(1,1-dimethylethyl)-, 1,1-dimethylethyl ester

Cas:5854-78-4

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

Xiamen Jenny Chemical Technology Co., Ltd.

GMP standard, high purity, competitive price, in stock 1. Quick Response: within 6 hours after receiving your email. 2. Quality Guarantee: All products are strictly tested by our QC, confirmed by QA, and approved by a third-party lab in China, USA,

H-Thr(tBu)-OtBu

Cas:5854-78-4

Min.Order:1 Milligram

Negotiable

Type:Trading Company

inquiry

TAIZHOU ZHENYU BIOTECHNOLOGY CO., LTD

Zhenyu biotech exported this product to many countries and regions at best price. if you are looking for the material's manufacturer or supplier in china, zhenyu biotech is your best choice. pls contact with us freely for getting detailed

H-THR(TBU)-OTBU

Cas:5854-78-4

Min.Order:1 Kilogram

FOB Price: $2.0

Type:Lab/Research institutions

inquiry

Hunan chemfish Pharmaceutical co.,Ltd

Appearance:95%+ Package:R&D,Pilot run Transportation:per client require Port:Express ,Air, Sea

(2S,3R)-tert-Butyl 2-amino-3-(tert-butoxy)butanoate

Cas:5854-78-4

Min.Order:0

Negotiable

Type:Manufacturers

inquiry

Suzhou Health Chemicals Co., Ltd.

High quality,stable supply chain.Appearance:white/off-white or light yellow Storage:Store in cool and dry place, keep away from strong light and heat. Package:aluminum bottle,glass bottle,PTFE bottle,cardboard drum Application:This product can be use

O-tert-Butyl-L-threonine tert-butyl ester

Cas:5854-78-4

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

Win-Win chemical Co.Ltd

Stock products, own laboratory Package:Grams, Kilograms Application:For R&D Transportation:According to customer request Port:Shanghai

O-tert-Butyl-L-threonine-tert-butyl ester cas no. 5854-78-4 98%

Cas:5854-78-4

Min.Order:0

Negotiable

Type:Lab/Research institutions

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Research Peptide Biotechnology Co., Ltd.

High purity, high success rate, short cycle and moderate priceAppearance:White powder solid Storage:Negative 20 degrees Celsius Package:5mg, 10mg 100mg, 1gram Application:Applied to various scientific research

L-Threonine,O-(1,1-dimethylethyl)-, 1,1-dimethylethyl ester

Cas:5854-78-4

Min.Order:0

Negotiable

Type:Lab/Research institutions

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GIHI CHEMICALS CO.,LIMITED

Lower price, sample is available,SDS test documents are available,large stock in warehouseAppearance:White powder Storage:Sealed and preserved Package:200/Kilograms Application:Fine chemical intermediates, used as the main raw material for the synthe

O-tert-Butyl-L-threonine-tert-butyl ester

Cas:5854-78-4

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

Kono Chem Co.,Ltd

high purity lowest priceAppearance:solid or liquid Storage:in sealed air resistant place Package:drum and bag Application:for pharma use Transportation:by sea or air Port:Beijing or Guangzhou

Glu(OtBu)-OMe.HCl

Cas:5854-78-4

Min.Order:0

Negotiable

Type:Other

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Hangzhou Dingyan Chem Co., Ltd

R & D enterprises have their own stock in stockAppearance:To be subject to the object Package:Customized Application:pharmaceutical intermediates Transportation:Air Port:Shanghai;Guangzhou

(2S,3R)-tert-Butyl 2-aMino-3-(tert-butoxy)butanoate

Cas:5854-78-4

Min.Order:0

Negotiable

Type:Manufacturers

inquiry

Henan Allgreen Chemical Co.,Ltd

high quality Storage:Sealed, dry, microtherm , avoid light and smell. Package:According to the demand of customer Application:Organic synthesis Transportation:by air or by sea

O-tert-Butyl-L-threonine tert-Butyl Ester

Cas:5854-78-4

Min.Order:0

Negotiable

Type:Manufacturers

inquiry

BOC Sciences

BOC Sciences is a US-based provider of specially designed scaffolds and building blocks products and services for academic and governmental research institutes, pharmaceutical and biotechnology industry. We offer an extensive catalog of building bloc

O-tert-Butyl-L-threonine-tert-butyl ester

Cas:5854-78-4

Min.Order:1 Gram

Negotiable

Type:Trading Company

inquiry

GL Biochem (Shanghai) Ltd.

Application:Intermidates

H-Thr(tBu)-OtBu (colorless liquid)

Cas:5854-78-4

Min.Order:0

Negotiable

Type:Manufacturers

inquiry

Antimex Chemical Limied

Ansciep Chemical is a professional enterprise manufacturing and distributing fine chemicals and speciality chemicals. We have been dedicated to heterocycle compounds and phenyl rings for tens of years. This is our mature product for export. Our quali

O-tert-Butyl-L-threonine tert-Butyl Ester

Cas:5854-78-4

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

Hangzhou Ocean Chemical Co., Ltd.

★.Best quality according to requirement ★.Competitive price in China market ★.Mature Technical support ★.Professional logistic support

O-tert-Butyl-L-threonine tert-Butyl Ester

Cas:5854-78-4

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

Hangzhou Fandachem Co.,Ltd

O-tert-Butyl-L-threonine tert-butyl ester cas 5854-78-4Appearance:white crystalline powder Storage:Store in dry, dark and ventilated place Package:25KG drum Application:intermediate Transportation:by air, by sea, by express

O-tert-Butyl-L-threonine tert-butyl ester cas 5854-78-4

Cas:5854-78-4

Min.Order:0

Negotiable

Type:Other

inquiry

Changzhou Ansciep Chemical Co.,Ltd.

reagent grade ex stockAppearance:white or off-white crystalline powder Storage:Keep away of light,cool place Package:1L 5L 10L 25L bottle Application:pharma intermediate Transportation:by Fedex, ship or plane

O-tert-Butyl-L-threonine tert-Butyl Ester

Cas:5854-78-4

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

Hangzhou Sartort Biopharma Co., Ltd

Best quality with low price Storage:ln stock Package:25kg/Barrel Application:Chemicals Transportation:Express/Sea/Air Port:Shanghai

H-Thr(tBu)-OtBu

Cas:5854-78-4

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

SAGECHEM LIMITED

5854-78-4 Application:intermediate

L-Threonine, O-(1,1-dimethylethyl)-, 1,1-dimethylethyl ester

Cas:5854-78-4

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

Chemlyte Solutions

Stock products, own laboratory Package:Grams, Kilograms Application:For R&D Transportation:According to customer request Port:Shanghai

O-tert-Butyl-L-threonine tert-Butyl Ester

Cas:5854-78-4

Min.Order:0

Negotiable

Type:Other

inquiry

Hunan Russell Chemicals Technology Co.,Ltd

high purity lowest priceAppearance:solid or liquid Storage:in sealed air resistant place Package:Foil bag; Drum; Plastic bottle Application:Pharma;Industry;Agricultural Transportation:by sea or air Port:any port in China

(2S,3R)-tert-Butyl 2-amino-3-(tert-butoxy)butanoate 5854-78-4

Cas:5854-78-4

Min.Order:0

Negotiable

Type:Trading Company

inquiry

Synthetic route

L-threonine
72-19-5

L-threonine

isobutene
115-11-7

isobutene

(2S,3R)-tert-butyl 2-amino-3-tert-butoxybutanoate
5854-78-4

(2S,3R)-tert-butyl 2-amino-3-tert-butoxybutanoate

Conditions
ConditionsYield
Stage #1: L-threonine With trifluorormethanesulfonic acid In 1,2-dimethoxyethane at -10 - 5℃;
Stage #2: isobutene In 1,2-dimethoxyethane at -15 - -10℃; for 48h; Reagent/catalyst; Solvent;
67.2%
Stage #1: L-threonine; isobutene With sulfuric acid In 1,2-dimethoxyethane at -5 - 5℃; for 24h;
Stage #2: With ammonia In water at 0℃;
L-threonine
72-19-5

L-threonine

tert-butyl methyl ether
1634-04-4

tert-butyl methyl ether

(2S,3R)-tert-butyl 2-amino-3-tert-butoxybutanoate
5854-78-4

(2S,3R)-tert-butyl 2-amino-3-tert-butoxybutanoate

Conditions
ConditionsYield
With sulfuric acid at 25℃; for 2h; Molecular sieve; chemoselective reaction;30%
N-Carbobenzoxy-O-tert.-butyl-L-threonin-tert.-butylester
14437-51-5

N-Carbobenzoxy-O-tert.-butyl-L-threonin-tert.-butylester

(2S,3R)-tert-butyl 2-amino-3-tert-butoxybutanoate
5854-78-4

(2S,3R)-tert-butyl 2-amino-3-tert-butoxybutanoate

Conditions
ConditionsYield
With hydrogen; palladium In methanol
With hydrogen; palladium on activated charcoal In methanol
With hydrogen; palladium on activated charcoal In N,N-dimethyl-formamide
With hydrogen; palladium on activated charcoal In methanol for 2h; Ambient temperature;
N-benzyloxycarbonyl-L-treonine
19728-63-3

N-benzyloxycarbonyl-L-treonine

isobutene
115-11-7

isobutene

(2S,3R)-tert-butyl 2-amino-3-tert-butoxybutanoate
5854-78-4

(2S,3R)-tert-butyl 2-amino-3-tert-butoxybutanoate

Conditions
ConditionsYield
(i) H2SO4, CH2Cl2, (ii) H2, Pd-BaSO4, MeOH; Multistep reaction;
(i) H2SO4, (ii) (hydrogenolysis); Multistep reaction;
(i) H2SO4, CH2Cl2, (ii) H2, Pd-C, EtOH; Multistep reaction;
tert-butyl methyl ether
1634-04-4

tert-butyl methyl ether

tert-butyl (2S,3R)-2-amino-3-hydroxybutanoate
17083-30-6, 66748-90-1, 67580-85-2, 150693-46-2, 150693-47-3

tert-butyl (2S,3R)-2-amino-3-hydroxybutanoate

(2S,3R)-tert-butyl 2-amino-3-tert-butoxybutanoate
5854-78-4

(2S,3R)-tert-butyl 2-amino-3-tert-butoxybutanoate

Conditions
ConditionsYield
With ZSM-5 supported silicotungstic acid at 70℃; Temperature;
(2S,3R)-tert-butyl 2-amino-3-tert-butoxybutanoate
5854-78-4

(2S,3R)-tert-butyl 2-amino-3-tert-butoxybutanoate

2-Azidoethyl α-D-galactopyranosiduronic acid
158000-10-3

2-Azidoethyl α-D-galactopyranosiduronic acid

N-(2-Azidoethyl α-D-galactopyranosiduronoyl)-O-(tert-butyl)-L-threonine tert-butyl ester

N-(2-Azidoethyl α-D-galactopyranosiduronoyl)-O-(tert-butyl)-L-threonine tert-butyl ester

Conditions
ConditionsYield
With N-ethoxycarbonyl-2-ethoxy-1,2-dihydroquinoline In N,N-dimethyl-formamide at 20℃; for 72h;100%
C12H15NO7
1147133-24-1

C12H15NO7

(2S,3R)-tert-butyl 2-amino-3-tert-butoxybutanoate
5854-78-4

(2S,3R)-tert-butyl 2-amino-3-tert-butoxybutanoate

C24H38N2O9
1147134-79-9

C24H38N2O9

Conditions
ConditionsYield
With 2,6-dimethylpyridine; 1-hydroxy-7-aza-benzotriazole; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride In N,N-dimethyl-formamide for 24h;100%
(2S,3R)-tert-butyl 2-amino-3-tert-butoxybutanoate
5854-78-4

(2S,3R)-tert-butyl 2-amino-3-tert-butoxybutanoate

N-Fmoc L-Phe
35661-40-6

N-Fmoc L-Phe

t-butyl-N-fluoren-9-ylmethyloxycarbonyl-L-phenylalanyl-O-t-butyl-L-threonine
87720-56-7

t-butyl-N-fluoren-9-ylmethyloxycarbonyl-L-phenylalanyl-O-t-butyl-L-threonine

Conditions
ConditionsYield
With dicyclohexyl-carbodiimide In dichloromethane; N,N-dimethyl-formamide at 20℃; for 18h;99%
(2S,3R)-tert-butyl 2-amino-3-tert-butoxybutanoate
5854-78-4

(2S,3R)-tert-butyl 2-amino-3-tert-butoxybutanoate

3-[(tert-butoxycarbonyl)amino]-3-methylbutanoic acid
129765-95-3

3-[(tert-butoxycarbonyl)amino]-3-methylbutanoic acid

Boc-β-HoAib-L-Thr(t-Bu)-O-t-Bu

Boc-β-HoAib-L-Thr(t-Bu)-O-t-Bu

Conditions
ConditionsYield
With pentamethoxy tantalum; 1-(Trimethylsilyl)imidazole In neat (no solvent) at 50℃; for 48h; Inert atmosphere; Sealed tube;99%
L-N-Boc-Ala
15761-38-3

L-N-Boc-Ala

(2S,3R)-tert-butyl 2-amino-3-tert-butoxybutanoate
5854-78-4

(2S,3R)-tert-butyl 2-amino-3-tert-butoxybutanoate

Boc-L-Ala-L-Thr(t-Bu)-O-t-Bu

Boc-L-Ala-L-Thr(t-Bu)-O-t-Bu

Conditions
ConditionsYield
With pentamethoxy tantalum; 1-(Trimethylsilyl)imidazole In neat (no solvent) at 50℃; for 72h; Inert atmosphere; Sealed tube;98%
(2S,3R)-tert-butyl 2-amino-3-tert-butoxybutanoate
5854-78-4

(2S,3R)-tert-butyl 2-amino-3-tert-butoxybutanoate

(2S,3S,4S,5R,6R)-6-[(2R,3R,4R,5S,6S)-2-(2-Acryloylamino-ethoxy)-3,5-dihydroxy-6-methyl-tetrahydro-pyran-4-yloxy]-3,4,5-trihydroxy-tetrahydro-pyran-2-carboxylic acid
127879-03-2

(2S,3S,4S,5R,6R)-6-[(2R,3R,4R,5S,6S)-2-(2-Acryloylamino-ethoxy)-3,5-dihydroxy-6-methyl-tetrahydro-pyran-4-yloxy]-3,4,5-trihydroxy-tetrahydro-pyran-2-carboxylic acid

(2S,3R)-2-({(2S,3S,4S,5R,6R)-6-[(2R,3R,4R,5S,6S)-2-(2-Acryloylamino-ethoxy)-3,5-dihydroxy-6-methyl-tetrahydro-pyran-4-yloxy]-3,4,5-trihydroxy-tetrahydro-pyran-2-carbonyl}-amino)-3-tert-butoxy-butyric acid tert-butyl ester
136632-51-4

(2S,3R)-2-({(2S,3S,4S,5R,6R)-6-[(2R,3R,4R,5S,6S)-2-(2-Acryloylamino-ethoxy)-3,5-dihydroxy-6-methyl-tetrahydro-pyran-4-yloxy]-3,4,5-trihydroxy-tetrahydro-pyran-2-carbonyl}-amino)-3-tert-butoxy-butyric acid tert-butyl ester

Conditions
ConditionsYield
With N-ethoxycarbonyl-2-ethoxy-1,2-dihydroquinoline In N,N-dimethyl-formamide at 20℃;95%
(2S,3R)-tert-butyl 2-amino-3-tert-butoxybutanoate
5854-78-4

(2S,3R)-tert-butyl 2-amino-3-tert-butoxybutanoate

2-(9H-fluoren-9-ylmethoxycarbonylamino)-3-methyl-thiobutyric acid S-(2-formyl-4-nitro-phenyl) ester
557095-50-8

2-(9H-fluoren-9-ylmethoxycarbonylamino)-3-methyl-thiobutyric acid S-(2-formyl-4-nitro-phenyl) ester

Fmoc-Val-Thr(t-Bu)-O-Bu-t
557095-67-7

Fmoc-Val-Thr(t-Bu)-O-Bu-t

Conditions
ConditionsYield
With N-methylmaleimide; N-ethyl-N,N-diisopropylamine In 1,4-dioxane; water; N,N-dimethyl-formamide at 20℃; for 2.5h;95%
(2S,3R)-tert-butyl 2-amino-3-tert-butoxybutanoate
5854-78-4

(2S,3R)-tert-butyl 2-amino-3-tert-butoxybutanoate

2-azidoethyl 3-O-(α-L-rhamnopyranosyl)-β-D-glucopyranosiduronic acid
136632-48-9

2-azidoethyl 3-O-(α-L-rhamnopyranosyl)-β-D-glucopyranosiduronic acid

(2S,3R)-2-{[(2S,3S,4S,5R,6R)-6-(2-Azido-ethoxy)-3,5-dihydroxy-4-((2S,3R,4R,5R,6S)-3,4,5-trihydroxy-6-methyl-tetrahydro-pyran-2-yloxy)-tetrahydro-pyran-2-carbonyl]-amino}-3-tert-butoxy-butyric acid tert-butyl ester

(2S,3R)-2-{[(2S,3S,4S,5R,6R)-6-(2-Azido-ethoxy)-3,5-dihydroxy-4-((2S,3R,4R,5R,6S)-3,4,5-trihydroxy-6-methyl-tetrahydro-pyran-2-yloxy)-tetrahydro-pyran-2-carbonyl]-amino}-3-tert-butoxy-butyric acid tert-butyl ester

Conditions
ConditionsYield
With N-ethoxycarbonyl-2-ethoxy-1,2-dihydroquinoline In N,N-dimethyl-formamide at 20℃;92%
(2S,3R)-tert-butyl 2-amino-3-tert-butoxybutanoate
5854-78-4

(2S,3R)-tert-butyl 2-amino-3-tert-butoxybutanoate

(2E,4E)-dodeca-2,4-dien-11-ynoic acid

(2E,4E)-dodeca-2,4-dien-11-ynoic acid

tert-butyl O-(tert-butyl)-N-((2E,4E)-dodeca-2,4-dien-11-ynoyl)-L-threoninate

tert-butyl O-(tert-butyl)-N-((2E,4E)-dodeca-2,4-dien-11-ynoyl)-L-threoninate

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 20℃; for 2.5h; Inert atmosphere;90%
(2S,3R)-tert-butyl 2-amino-3-tert-butoxybutanoate
5854-78-4

(2S,3R)-tert-butyl 2-amino-3-tert-butoxybutanoate

isonicotinoyl chloride hydrochloride
39178-35-3

isonicotinoyl chloride hydrochloride

C18H28N2O4

C18H28N2O4

Conditions
ConditionsYield
With triethylamine In dichloromethane at 20℃; for 2.25h;88.6%
(2S,3R)-tert-butyl 2-amino-3-tert-butoxybutanoate
5854-78-4

(2S,3R)-tert-butyl 2-amino-3-tert-butoxybutanoate

2-Nitrobenzenesulfonyl chloride
1694-92-4

2-Nitrobenzenesulfonyl chloride

N-(2-nitrobenzenesulfonyl)-O-t-butyl-L-threonine t-butyl ester

N-(2-nitrobenzenesulfonyl)-O-t-butyl-L-threonine t-butyl ester

Conditions
ConditionsYield
With pyridine In dichloromethane at 20℃; Acylation;88%
N-[(benzyloxy)carbonyl]-L-alanyl-L-alanine methyl ester
2483-51-4

N-[(benzyloxy)carbonyl]-L-alanyl-L-alanine methyl ester

(2S,3R)-tert-butyl 2-amino-3-tert-butoxybutanoate
5854-78-4

(2S,3R)-tert-butyl 2-amino-3-tert-butoxybutanoate

C26H41N3O7

C26H41N3O7

Conditions
ConditionsYield
With 2,2':6',2'':6'',2'''-quaterpyridine; pentamethoxy tantalum at 70℃; for 48h;84%
Z-Lys(Boc)-OH
2389-60-8

Z-Lys(Boc)-OH

(2S,3R)-tert-butyl 2-amino-3-tert-butoxybutanoate
5854-78-4

(2S,3R)-tert-butyl 2-amino-3-tert-butoxybutanoate

Nα-Z-Nε-BOC-L-lysyl-O-tert-butyl-L-threonine tert-butyl ester
52616-65-6

Nα-Z-Nε-BOC-L-lysyl-O-tert-butyl-L-threonine tert-butyl ester

Conditions
ConditionsYield
With benzotriazol-1-ol; dicyclohexyl-carbodiimide In tetrahydrofuran at 0℃; for 1h; then 3 h at 20 deg C;82%
(2E,4E)-11-methyldodeca-2,4-dienoic acid

(2E,4E)-11-methyldodeca-2,4-dienoic acid

(2S,3R)-tert-butyl 2-amino-3-tert-butoxybutanoate
5854-78-4

(2S,3R)-tert-butyl 2-amino-3-tert-butoxybutanoate

tert-butyl O-(tert-butyl)-N-((2E,4E)-11-methyldodeca-2,4-dienoyl)-L-threoninate

tert-butyl O-(tert-butyl)-N-((2E,4E)-11-methyldodeca-2,4-dienoyl)-L-threoninate

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 20℃; for 4h; Inert atmosphere;81%
3-benzylamino-propionic acid methyl ester
23574-01-8

3-benzylamino-propionic acid methyl ester

(2S,3R)-tert-butyl 2-amino-3-tert-butoxybutanoate
5854-78-4

(2S,3R)-tert-butyl 2-amino-3-tert-butoxybutanoate

C22H36N2O4

C22H36N2O4

Conditions
ConditionsYield
With pentamethoxy tantalum at 60℃; for 48h;75%
Isotridecanoic Acid
5681-98-1

Isotridecanoic Acid

(2S,3R)-tert-butyl 2-amino-3-tert-butoxybutanoate
5854-78-4

(2S,3R)-tert-butyl 2-amino-3-tert-butoxybutanoate

tert-butyl O-(tert-butyl)-N-(11-methyldodecanoyl)-L-threoninate

tert-butyl O-(tert-butyl)-N-(11-methyldodecanoyl)-L-threoninate

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 20℃; for 4h; Inert atmosphere;75%
(S)-N-(tert-butoxycarbonyl)alanine methyl ester
28875-17-4

(S)-N-(tert-butoxycarbonyl)alanine methyl ester

(2S,3R)-tert-butyl 2-amino-3-tert-butoxybutanoate
5854-78-4

(2S,3R)-tert-butyl 2-amino-3-tert-butoxybutanoate

Boc-L-Ala-L-Thr(t-Bu)-O-t-Bu

Boc-L-Ala-L-Thr(t-Bu)-O-t-Bu

Conditions
ConditionsYield
With pentamethoxy tantalum In neat (no solvent) at 60℃; for 72h; Inert atmosphere; Sealed tube;71%
(3R,4R)-1-(4-fluorophenyl)-3-[(4-fluorobenzoyl)methylthio]-4-{4-[N-(carboxymethyl)carbamoylmethoxy]phenyl}azetidin-2-one
858104-55-9

(3R,4R)-1-(4-fluorophenyl)-3-[(4-fluorobenzoyl)methylthio]-4-{4-[N-(carboxymethyl)carbamoylmethoxy]phenyl}azetidin-2-one

(2S,3R)-tert-butyl 2-amino-3-tert-butoxybutanoate
5854-78-4

(2S,3R)-tert-butyl 2-amino-3-tert-butoxybutanoate

N-{[4-((2R,3R)-1-(4-fluorophenyl)-3-{[2-(4-fluorophenyl)-2-oxoethyl]thio}-4-oxoazetidin-2-yl)phenoxy]acetyl}glycyl-L-threonine

N-{[4-((2R,3R)-1-(4-fluorophenyl)-3-{[2-(4-fluorophenyl)-2-oxoethyl]thio}-4-oxoazetidin-2-yl)phenoxy]acetyl}glycyl-L-threonine

Conditions
ConditionsYield
Stage #1: (3R,4R)-1-(4-fluorophenyl)-3-[(4-fluorobenzoyl)methylthio]-4-{4-[N-(carboxymethyl)carbamoylmethoxy]phenyl}azetidin-2-one; (2S,3R)-tert-butyl 2-amino-3-tert-butoxybutanoate With 4-methyl-morpholine In dichloromethane at 20℃;
Stage #2: With (1,1,1-Benzotriazol-1-yl)-1,1,3,3-tetramethyluronium tetrafluoroborate In dichloromethane
Stage #3: With trifluoroacetic acid In dichloromethane for 2h;
63%
(2S,3R)-tert-butyl 2-amino-3-tert-butoxybutanoate
5854-78-4

(2S,3R)-tert-butyl 2-amino-3-tert-butoxybutanoate

tert-butyl (S)-(1-((2,2-dicyanoethyl)amino)-1-oxo-3-phenylpropan-2-yl)carbamate

tert-butyl (S)-(1-((2,2-dicyanoethyl)amino)-1-oxo-3-phenylpropan-2-yl)carbamate

tert-butyl N-(tert-butoxycarbonyl)-L-phenylalanylglycyl-O-(tert-butyl)-L-threoninate

tert-butyl N-(tert-butoxycarbonyl)-L-phenylalanylglycyl-O-(tert-butyl)-L-threoninate

Conditions
ConditionsYield
With oxygen; cesium acetate In water; N,N-dimethyl-formamide at 20℃; for 17h; Inert atmosphere;51%
(2S,3R)-tert-butyl 2-amino-3-tert-butoxybutanoate
5854-78-4

(2S,3R)-tert-butyl 2-amino-3-tert-butoxybutanoate

allyl alcohol
107-18-6

allyl alcohol

(2S, 3R)-tert-butyl 3-(tert-butoxy)-2-((3-hydroxypropyl)amino)butanoate

(2S, 3R)-tert-butyl 3-(tert-butoxy)-2-((3-hydroxypropyl)amino)butanoate

Conditions
ConditionsYield
With potassium phosphate; [(bis(2-dicyclohexylphosphinoethyl)amine)Fe(CO)Br2]; sodium triethylborohydride In cyclohexane at 80℃; for 24h; Inert atmosphere; Sealed tube;42%
(2S,3R)-tert-butyl 2-amino-3-tert-butoxybutanoate
5854-78-4

(2S,3R)-tert-butyl 2-amino-3-tert-butoxybutanoate

N-tert-butoxycarbonylglycylglycylphenylalanylmethionine
68800-26-0

N-tert-butoxycarbonylglycylglycylphenylalanylmethionine

Boc-Gly-Gly-Phe-Met-Thr(tBu)-OtBu

Boc-Gly-Gly-Phe-Met-Thr(tBu)-OtBu

Conditions
ConditionsYield
With benzotriazol-1-ol; dicyclohexyl-carbodiimide In N,N-dimethyl-formamide 1.) 30 min, -20 deg C; 2.) 0 deg C, 2 h; 3.) r.t., 18 h;36.1%
N-benzyloxycarbonyl-L-asparagine p-nitrophenyl ester
3256-57-3

N-benzyloxycarbonyl-L-asparagine p-nitrophenyl ester

(2S,3R)-tert-butyl 2-amino-3-tert-butoxybutanoate
5854-78-4

(2S,3R)-tert-butyl 2-amino-3-tert-butoxybutanoate

N-Benzyloxycarbonyl-L-asparaginyl-O-tert.-butyl-L-threonin-tert.-butylester
2596-12-5

N-Benzyloxycarbonyl-L-asparaginyl-O-tert.-butyl-L-threonin-tert.-butylester

Conditions
ConditionsYield
In N,N-dimethyl-formamide
(2S,3R)-tert-butyl 2-amino-3-tert-butoxybutanoate
5854-78-4

(2S,3R)-tert-butyl 2-amino-3-tert-butoxybutanoate

L-threonine
72-19-5

L-threonine

Conditions
ConditionsYield
With trifluoroacetic acid
chloro-trimethyl-silane
75-77-4

chloro-trimethyl-silane

(2S,3R)-tert-butyl 2-amino-3-tert-butoxybutanoate
5854-78-4

(2S,3R)-tert-butyl 2-amino-3-tert-butoxybutanoate

N-(Trimethylsilyl)-O-tert-butylthreonin-tert-butylester

N-(Trimethylsilyl)-O-tert-butylthreonin-tert-butylester

Conditions
ConditionsYield
With triethylamine In dichloromethane
(2S,3R)-tert-butyl 2-amino-3-tert-butoxybutanoate
5854-78-4

(2S,3R)-tert-butyl 2-amino-3-tert-butoxybutanoate

Fmoc-Val-OPfp
86060-87-9

Fmoc-Val-OPfp

Fmoc-Val-Thr(t-Bu)-O-Bu-t
557095-67-7

Fmoc-Val-Thr(t-Bu)-O-Bu-t

(2S,3R)-tert-butyl 2-amino-3-tert-butoxybutanoate
5854-78-4

(2S,3R)-tert-butyl 2-amino-3-tert-butoxybutanoate

Nα-benzyloxycarbonyl-glycyl-prolyl-alanine
5891-41-8

Nα-benzyloxycarbonyl-glycyl-prolyl-alanine

Nα-benzyloxycarbonyl-glycyl-prolyl-alanyl-O-tert-butyl-threonine tert-butyl ester
79141-72-3

Nα-benzyloxycarbonyl-glycyl-prolyl-alanyl-O-tert-butyl-threonine tert-butyl ester

Conditions
ConditionsYield
With benzotriazol-1-ol; dicyclohexyl-carbodiimide 1.) DMF/CH2Cl2, 0 deg C, 20 min, 2.) room temp., 12 h; Yield given. Multistep reaction;

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