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gramicidin S

Gramicidin S

Cas:113-73-5

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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

Gramicidin S manufacturer/supplier

Cas:113-73-5

Min.Order:1 Gram

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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

Factory direct sale CAS 113-73-5 with fast shipping

Cas:113-73-5

Min.Order:10 Gram

FOB Price: $146.0 / 176.0

Type:Trading Company

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Wuhan Han Sheng New Material Technology Co.,Ltd

Our Advantage: high quality with competitive price High quality standard: BP/USP/EP Enterprise standard All purity customized Fast and safe delivery We have reliable forwarder who can help us deliver our goods more fast and safe. We

Gramicidin S CAS NO.113-73-5

Cas:113-73-5

Min.Order:10 Kilogram

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Hebei Nengqian Chemical Import and Export Co., LTD

Our Advantage Rich Experience Our products are sold all over Europe,North&South America, Sino-East, Asia and pacific area as well as Africa,we establish long term. Quality service Company cooperates with research institutes. We strictly con

113-73-5 GRAMICIDIN C

Cas:113-73-5

Min.Order:1 Kilogram

FOB Price: $15.0 / 50.0

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

Gramicidin S 113-73-5

Cas:113-73-5

Min.Order:1 Kilogram

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Type:Lab/Research institutions

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Qingdao Beluga Import and Export Co., LTD

GRAMICIDIN C CAS:113-73-5 Qingdao Belugas Import and Export Co., Ltd. is a scientific and technological company integrating research and development, production and trade of chemical intermediates, specializing in high quality organic intermediates,

GRAMICIDIN C CAS:113-73-5

Cas:113-73-5

Min.Order:1 Gram

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Shandong Hanjiang Chemical Co., Ltd.

Hello, dear friend! I'm Hansen and Allen from China. Welcome to my lookchem mall! The following is a brief introduction of our company's products and services. If you are interested in our products, please contact us by emai

Gramicidin S

Cas:113-73-5

Min.Order:1 Kilogram

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Type:Lab/Research institutions

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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

Gramicidin S

Cas:113-73-5

Min.Order:0

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Type:Lab/Research institutions

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Hangzhou Keyingchem Co.,Ltd

Hangzhou KeyingChem Co., Ltd. exported this product to many countries and regions at best price. If you are looking for the material’s manufacturer or supplier in China, KeyingChem is your best choice. Pls contact with us freely for getting det

GRAMICIDIN C

Cas:113-73-5

Min.Order:0 Metric Ton

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Zibo Hangyu Biotechnology Development Co., Ltd

Zibo Hangyu Biotechnology Development Co., Ltd is a leading manufacturer and supplier of chemicals in China. We develop produce and distribute high quality pharmaceuticals, intermediates, special chemicals and OLED intermediates and other fine chemi

GraMicidin S

Cas:113-73-5

Min.Order:10 Gram

FOB Price: $100.0

Type:Lab/Research institutions

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SHANGHAI SYSTEAM BIOCHEM CO., LTD

We are one of a few suppliers that can offer custom synthesis service of this product We are specialized in custom synthesis, chemical/pharmaceutical/ pesticides outsourcing and contract research. We are committed to prov

Gramicidin S CAS NO.113-73-5

Cas:113-73-5

Min.Order:100 Gram

FOB Price: $100.0 / 2000.0

Type:Lab/Research institutions

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Jiangsu Qianyu Molecular Technology Co., LTD.

Our Advantages A. International Top level TechnologyOur company owned biomedicine experts are famous at home and abroad with rich experience in research and development in the field of efficient chiral functional molecules research and development an

Best OfferGRAMICIDIN C

Cas:113-73-5

Min.Order:0

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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,

GRAMICIDINC

Cas:113-73-5

Min.Order:1 Milligram

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EAST CHEMSOURCES LIMITED

factory?direct?saleAppearance:White Powder Storage:Store In Dry, Cool And Ventilated Place Package:25kg/drum, also according to the clients requirement Application:It is widely used as a thickener, emulsifier and stabilizer Transportation:By Sea Or B

Gramicidin S CAS NO.113-73-5

Cas:113-73-5

Min.Order:1 Kilogram

FOB Price: $18.0 / 20.0

Type:Trading Company

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Shandong Mopai Biotechnology Co., LTD

Shandong Mopai Biotechnology Co., LTD is a leading manufacturer and supplier of chemicals in China. We develop produce and distribute high quality pharmaceuticals, intermediates, special chemicals and OLED intermediates and other fine chemicals. W

Gramicidin S CAS NO.113-73-5

Cas:113-73-5

Min.Order:1 Gram

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KAISA GROUP INC

1.Applied in food field.it can improve the immune system and prolong life. 2.Appliedin cosmetic field.it can improve the skin care. 3.Applied in pharmaceutical field.it can treat various dieases. 4.Our product quality assurance will make our customer

Gramicidin S CAS NO.113-73-5

Cas:113-73-5

Min.Order:1 Metric Ton

FOB Price: $1.5

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Golden Pharma Co., Limited

GOLDEN PHARMA CO.,LIMITED.is a professional pharmaceutical company,our team have more than 20years expereince in pharmaceutical production and sales. we are a professional technical enterprise specializing in the R & D, production,QA regulation

GRAMICIDIN C

Cas:113-73-5

Min.Order:1 Kilogram

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Type:Other

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Bluecrystal chem-union

We are a Union of chemistry in China, consists of chemists,engineers, laboratories,factories in China. We organize surplus capacity of R&D and production as well as custom synthesis for chemical products and chemical business project. We are supp

Gramicidin S CAS NO.113-73-5

Cas:113-73-5

Min.Order:1 Metric Ton

FOB Price: $1.0

Type:Trading Company

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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

Gramicidin S

Cas:113-73-5

Min.Order:0

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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

Gramicidin S

Cas:113-73-5

Min.Order:0

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Type:Other

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Hangzhou Dingyan Chem Co., Ltd

R & D enterprises have their own stock in stock Package:1kg Application:pharmaceutical intermediates

Gramicidin S

Cas:113-73-5

Min.Order:0

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Hangzhou J&H Chemical Co., Ltd.

J&H CHEM is one of China's leading providers of integrated fine chemical services including offering, research and development, Custom manufacturing business, as well as other Value-added customer services, for diversified range products of chemicals

GRAMICIDIN C

Cas:113-73-5

Min.Order:0

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Xi`an Eastling Biotech 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:Beijing or Guangzhou

GRAMICIDIN C

Cas:113-73-5

Min.Order:0

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Henan Tianfu Chemical Co., Ltd.

1.Our services:A.Supply sampleB.The packing also can be according the customers` requirmentC.Any inquiries will be replied within 24 hoursD.we provide Commerical Invoice, Packing List, Bill of loading, COA , Health certificate and Origin certificate.

Gramicidin S

Cas:113-73-5

Min.Order:0

Negotiable

Type:Lab/Research institutions

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Xian Changyue Biological Technology Co., Ltd.

best seller Application:API

GRAMICIDIN C

Cas:113-73-5

Min.Order:0

Negotiable

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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

Gramicidin S

Cas:113-73-5

Min.Order:0

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Hubei Langyou International Trading Co., Ltd

Gramicidin S CAS NO.113-73-5 Application:Gramicidin S CAS NO.113-73-5

Gramicidin S CAS NO.113-73-5

Cas:113-73-5

Min.Order:0

Negotiable

Type:Other

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Wuhan Circle Star Chem-medical Technology co.,Ltd.

good quality, competitive price, thoughtful after sale serviceAppearance:White to Off-White Solid Storage:Keep it in dry,shady and cool place Package:as your requirement Application:Pharma;Industry;Agricultural;chemical reaserch Transportation:by Sea

GRAMICIDIN C

Cas:113-73-5

Min.Order:0

Negotiable

Type:Lab/Research institutions

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DB BIOTECH CO., LTD

best seller Application:API

GRAMICIDIN C

Cas:113-73-5

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Synthetic route

Cyclo[(Val-Orn-(Cbz)-Leu-DPhe-Pro)2]
15207-29-1

Cyclo[(Val-Orn-(Cbz)-Leu-DPhe-Pro)2]

Gramicidin S
113-73-5

Gramicidin S

Conditions
ConditionsYield
With hydrogen; palladium In acetic acid for 4h;90%
With hydrogen; palladium on activated charcoal Hydrogenolysis;
With hydrogen
D-Phe-Pro-Val-Orn-Leu-D-Phe-Pro-Val-Orn-Leu
83830-88-0

D-Phe-Pro-Val-Orn-Leu-D-Phe-Pro-Val-Orn-Leu

Gramicidin S
113-73-5

Gramicidin S

Conditions
ConditionsYield
at 150℃; for 4h; Inert atmosphere; Neat (no solvent);87%
[Orn(Boc)2,2']gramicidin
41839-95-6

[Orn(Boc)2,2']gramicidin

Gramicidin S
113-73-5

Gramicidin S

Conditions
ConditionsYield
With trifluoroacetic acid In dichloromethane for 0.5h;78%
With trifluoroacetic acid In dichloromethane for 1h;
With chlorotriisopropylsilane; trifluoroacetic acid In water for 1.5h;
With trifluoroacetic acid In water at 20℃; for 1h;57 mg
H-(D-Phe-Pro-Val-Orn-Leu)2-ONSu

H-(D-Phe-Pro-Val-Orn-Leu)2-ONSu

Gramicidin S
113-73-5

Gramicidin S

Conditions
ConditionsYield
With pyridine In N,N-dimethyl-formamide at 25℃; for 24h;65%
C70H110N12O15

C70H110N12O15

Gramicidin S
113-73-5

Gramicidin S

Conditions
ConditionsYield
Stage #1: C70H110N12O15 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
Stage #2: With trifluoroacetic acid
53%
(S)-2-[(S)-5-tert-Butoxycarbonylamino-2-((S)-2-{[(S)-1-((R)-2-tert-butoxycarbonylamino-3-phenyl-propionyl)-pyrrolidine-2-carbonyl]-amino}-3-methyl-butyrylamino)-pentanoylamino]-4-methyl-pentanoic acid 2,5-dioxo-pyrrolidin-1-yl ester

(S)-2-[(S)-5-tert-Butoxycarbonylamino-2-((S)-2-{[(S)-1-((R)-2-tert-butoxycarbonylamino-3-phenyl-propionyl)-pyrrolidine-2-carbonyl]-amino}-3-methyl-butyrylamino)-pentanoylamino]-4-methyl-pentanoic acid 2,5-dioxo-pyrrolidin-1-yl ester

A

Gramicidin S
113-73-5

Gramicidin S

B

cyclo(D-Phe-Pro-Val-Orn-Leu)

cyclo(D-Phe-Pro-Val-Orn-Leu)

Conditions
ConditionsYield
Stage #1: (S)-2-[(S)-5-tert-Butoxycarbonylamino-2-((S)-2-{[(S)-1-((R)-2-tert-butoxycarbonylamino-3-phenyl-propionyl)-pyrrolidine-2-carbonyl]-amino}-3-methyl-butyrylamino)-pentanoylamino]-4-methyl-pentanoic acid 2,5-dioxo-pyrrolidin-1-yl ester With trifluoroacetic acid dealkoxycarbonylation;
Stage #2: With pyridine In N,N-dimethyl-formamide at 25℃; for 24h; Dimerization; cyclization;
A 38%
B 15%
Boc-D-Phe-Pro-Val-Orn(Boc)-OH
917501-50-9

Boc-D-Phe-Pro-Val-Orn(Boc)-OH

H-Leu-oxime resin

H-Leu-oxime resin

A

Gramicidin S
113-73-5

Gramicidin S

B

cyclo(D-Phe-Pro-Val-Orn-Leu)

cyclo(D-Phe-Pro-Val-Orn-Leu)

Conditions
ConditionsYield
Stage #1: Boc-D-Phe-Pro-Val-Orn(Boc)-OH; H-Leu-oxime resin With (benzotriazo-1-yloxy)tris(dimethylamino)phosphonium hexafluorophosphate; benzotriazol-1-ol
Stage #2: With trifluoroacetic acid In dichloromethane for 0.5h;
Stage #3: With acetic acid; N-ethyl-N,N-diisopropylamine In 1,4-dioxane at 25℃; for 24h;
A 35%
B n/a
H-D-Phe-Pro-Val-Orn-Leu-ONSu*TFA

H-D-Phe-Pro-Val-Orn-Leu-ONSu*TFA

A

Gramicidin S
113-73-5

Gramicidin S

B

cyclo(D-Phe-Pro-Val-Orn-Leu)

cyclo(D-Phe-Pro-Val-Orn-Leu)

Conditions
ConditionsYield
With pyridine In N,N-dimethyl-formamide at 25℃; for 24h; Yield given. Yields of byproduct given;
D-Phe-L-Pro
51926-52-4

D-Phe-L-Pro

Fmoc-protected immobolized peptide

Fmoc-protected immobolized peptide

Gramicidin S
113-73-5

Gramicidin S

Conditions
ConditionsYield
Yield given. Multistep reaction;
TentaGel-PEG-CONH-CH2CH2S-Leu-Orn-Val-Pro-D-Phe-Leu-Orn-Val-Pro-D-Phe-NH2

TentaGel-PEG-CONH-CH2CH2S-Leu-Orn-Val-Pro-D-Phe-Leu-Orn-Val-Pro-D-Phe-NH2

Gramicidin S
113-73-5

Gramicidin S

Conditions
ConditionsYield
Stage #1: TentaGel-PEG-CONH-CH2CH2S-Leu-Orn-Val-Pro-D-Phe-Leu-Orn-Val-Pro-D-Phe-NH2 With 3-(N-morpholino)propanesulfonate buffer; GrsB TE at 37℃; for 3h; pH=7.0; Enzymatic reaction;
Stage #2: With trifluoroacetic acid In water
(S)-2-[(S)-5-Amino-2-((S)-2-{[(S)-1-((R)-2-amino-3-phenyl-propionyl)-pyrrolidine-2-carbonyl]-amino}-3-methyl-butyrylamino)-pentanoylamino]-4-methyl-pentanoic acid 2,5-dioxo-pyrrolidin-1-yl ester
151812-96-3

(S)-2-[(S)-5-Amino-2-((S)-2-{[(S)-1-((R)-2-amino-3-phenyl-propionyl)-pyrrolidine-2-carbonyl]-amino}-3-methyl-butyrylamino)-pentanoylamino]-4-methyl-pentanoic acid 2,5-dioxo-pyrrolidin-1-yl ester

Gramicidin S
113-73-5

Gramicidin S

Conditions
ConditionsYield
With pyridine In N,N-dimethyl-formamide at 25℃; for 24h;
Fmoc-Val-OH
68858-20-8

Fmoc-Val-OH

Boc-D-Phe-OH
18942-49-9

Boc-D-Phe-OH

Fmoc-Pro-OH
71989-31-6

Fmoc-Pro-OH

Fmoc-Orn(Boc)-OH
109425-55-0

Fmoc-Orn(Boc)-OH

Fmoc-Leu-D-Phe-Pro-Val-Orn(Boc)-Leu-(4-sulfamylbutyryl AM resin)

Fmoc-Leu-D-Phe-Pro-Val-Orn(Boc)-Leu-(4-sulfamylbutyryl AM resin)

Gramicidin S
113-73-5

Gramicidin S

Conditions
ConditionsYield
Multistep reaction;
Boc-D-Phe-Pro-Val-Orn(Boc)-Leu-D-Phe-Pro-Val-Orn(Boc)-OH

Boc-D-Phe-Pro-Val-Orn(Boc)-Leu-D-Phe-Pro-Val-Orn(Boc)-OH

H-Leu-oxime resin

H-Leu-oxime resin

A

Gramicidin S
113-73-5

Gramicidin S

B

C60H92N12O10

C60H92N12O10

Conditions
ConditionsYield
Stage #1: Boc-D-Phe-Pro-Val-Orn(Boc)-Leu-D-Phe-Pro-Val-Orn(Boc)-OH; H-Leu-oxime resin With (benzotriazo-1-yloxy)tris(dimethylamino)phosphonium hexafluorophosphate; benzotriazol-1-ol
Stage #2: With trifluoroacetic acid In dichloromethane for 0.5h;
Stage #3: With acetic acid; N-ethyl-N,N-diisopropylamine In 1,4-dioxane at 25℃; for 24h;
A 56 % Chromat.
B 15 % Chromat.
H-Val-Orn(Z)-OBzl

H-Val-Orn(Z)-OBzl

Gramicidin S
113-73-5

Gramicidin S

Conditions
ConditionsYield
Multi-step reaction with 6 steps
1.1: HOBt; EDCI / CH2Cl2 / 3 h / 0 - 20 °C
2.1: HCl / dioxane / 0.5 h / 20 °C
3.1: 3.21 g / HOBt; EDCI / CH2Cl2 / 3 h / 0 - 20 °C
4.1: hydrogen / Pd/C / methanol / 15 h
5.1: 1.90 g / NaOH / methanol; dioxane; H2O / 15 h / 20 °C
6.1: BOP; HOBt
6.2: trifluoroacetic acid / CH2Cl2 / 0.5 h
6.3: 35 percent / iPr2NEt; acetic acid / dioxane / 24 h / 25 °C
View Scheme
Boc-Val-Orn(Z)-OBzl

Boc-Val-Orn(Z)-OBzl

Gramicidin S
113-73-5

Gramicidin S

Conditions
ConditionsYield
Multi-step reaction with 7 steps
1.1: HCl / dioxane / 0.5 h / 20 °C
2.1: HOBt; EDCI / CH2Cl2 / 3 h / 0 - 20 °C
3.1: HCl / dioxane / 0.5 h / 20 °C
4.1: 3.21 g / HOBt; EDCI / CH2Cl2 / 3 h / 0 - 20 °C
5.1: hydrogen / Pd/C / methanol / 15 h
6.1: 1.90 g / NaOH / methanol; dioxane; H2O / 15 h / 20 °C
7.1: BOP; HOBt
7.2: trifluoroacetic acid / CH2Cl2 / 0.5 h
7.3: 35 percent / iPr2NEt; acetic acid / dioxane / 24 h / 25 °C
View Scheme
H-Pro-Val-Orn(Z)-OBzl

H-Pro-Val-Orn(Z)-OBzl

Gramicidin S
113-73-5

Gramicidin S

Conditions
ConditionsYield
Multi-step reaction with 4 steps
1.1: 3.21 g / HOBt; EDCI / CH2Cl2 / 3 h / 0 - 20 °C
2.1: hydrogen / Pd/C / methanol / 15 h
3.1: 1.90 g / NaOH / methanol; dioxane; H2O / 15 h / 20 °C
4.1: BOP; HOBt
4.2: trifluoroacetic acid / CH2Cl2 / 0.5 h
4.3: 35 percent / iPr2NEt; acetic acid / dioxane / 24 h / 25 °C
View Scheme
Boc-D-Phe-Pro-Val-Orn-OH

Boc-D-Phe-Pro-Val-Orn-OH

Gramicidin S
113-73-5

Gramicidin S

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1.1: 1.90 g / NaOH / methanol; dioxane; H2O / 15 h / 20 °C
2.1: BOP; HOBt
2.2: trifluoroacetic acid / CH2Cl2 / 0.5 h
2.3: 35 percent / iPr2NEt; acetic acid / dioxane / 24 h / 25 °C
View Scheme
Boc-Pro-Val-Orn(Z)-OBzl

Boc-Pro-Val-Orn(Z)-OBzl

Gramicidin S
113-73-5

Gramicidin S

Conditions
ConditionsYield
Multi-step reaction with 5 steps
1.1: HCl / dioxane / 0.5 h / 20 °C
2.1: 3.21 g / HOBt; EDCI / CH2Cl2 / 3 h / 0 - 20 °C
3.1: hydrogen / Pd/C / methanol / 15 h
4.1: 1.90 g / NaOH / methanol; dioxane; H2O / 15 h / 20 °C
5.1: BOP; HOBt
5.2: trifluoroacetic acid / CH2Cl2 / 0.5 h
5.3: 35 percent / iPr2NEt; acetic acid / dioxane / 24 h / 25 °C
View Scheme
Boc-D-Phe-Pro-Val-Orn(Z)-OBzl
917501-48-5

Boc-D-Phe-Pro-Val-Orn(Z)-OBzl

Gramicidin S
113-73-5

Gramicidin S

Conditions
ConditionsYield
Multi-step reaction with 3 steps
1.1: hydrogen / Pd/C / methanol / 15 h
2.1: 1.90 g / NaOH / methanol; dioxane; H2O / 15 h / 20 °C
3.1: BOP; HOBt
3.2: trifluoroacetic acid / CH2Cl2 / 0.5 h
3.3: 35 percent / iPr2NEt; acetic acid / dioxane / 24 h / 25 °C
View Scheme
t-Boc-L-valine
13734-41-3

t-Boc-L-valine

Boc-Gly

Boc-Gly

Gramicidin S
113-73-5

Gramicidin S

Conditions
ConditionsYield
Multi-step reaction with 8 steps
1.1: HOBt; EDCI / CH2Cl2 / 3 h / 0 - 20 °C
2.1: HCl / dioxane / 0.5 h / 20 °C
3.1: HOBt; EDCI / CH2Cl2 / 3 h / 0 - 20 °C
4.1: HCl / dioxane / 0.5 h / 20 °C
5.1: 3.21 g / HOBt; EDCI / CH2Cl2 / 3 h / 0 - 20 °C
6.1: hydrogen / Pd/C / methanol / 15 h
7.1: 1.90 g / NaOH / methanol; dioxane; H2O / 15 h / 20 °C
8.1: BOP; HOBt
8.2: trifluoroacetic acid / CH2Cl2 / 0.5 h
8.3: 35 percent / iPr2NEt; acetic acid / dioxane / 24 h / 25 °C
View Scheme
H-Orn(Z)-OBzl
73995-50-3

H-Orn(Z)-OBzl

Gramicidin S
113-73-5

Gramicidin S

Conditions
ConditionsYield
Multi-step reaction with 8 steps
1.1: HOBt; EDCI / CH2Cl2 / 3 h / 0 - 20 °C
2.1: HCl / dioxane / 0.5 h / 20 °C
3.1: HOBt; EDCI / CH2Cl2 / 3 h / 0 - 20 °C
4.1: HCl / dioxane / 0.5 h / 20 °C
5.1: 3.21 g / HOBt; EDCI / CH2Cl2 / 3 h / 0 - 20 °C
6.1: hydrogen / Pd/C / methanol / 15 h
7.1: 1.90 g / NaOH / methanol; dioxane; H2O / 15 h / 20 °C
8.1: BOP; HOBt
8.2: trifluoroacetic acid / CH2Cl2 / 0.5 h
8.3: 35 percent / iPr2NEt; acetic acid / dioxane / 24 h / 25 °C
View Scheme
C70H110N12O15
1054661-52-7

C70H110N12O15

Gramicidin S
113-73-5

Gramicidin S

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: 1.19 g / N-hydroxybenzotriazole hydrate; diisopropylethylamine; PyBOP / dimethylformamide / 16 h
2: 78 percent / CF3CO2H / CH2Cl2 / 0.5 h
View Scheme
cyclo(Val-Orn(For)-Leu-D-Phe-Pro)2

cyclo(Val-Orn(For)-Leu-D-Phe-Pro)2

Gramicidin S
113-73-5

Gramicidin S

Conditions
ConditionsYield
With hydrogenchloride In methanol at 37℃; for 21h;
C45H61N7O8S

C45H61N7O8S

A

Gramicidin S
113-73-5

Gramicidin S

B

cyclo(D-Phe-Pro-Val-Orn-Leu)

cyclo(D-Phe-Pro-Val-Orn-Leu)

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: water; 3,3-dimethyldioxirane / acetone / 0.17 h / 23 °C
2: water; oxalic acid / N,N-dimethyl-formamide / 48 h / 40 °C
View Scheme
C36H47N5O8

C36H47N5O8

A

Gramicidin S
113-73-5

Gramicidin S

B

cyclo(D-Phe-Pro-Val-Orn-Leu)

cyclo(D-Phe-Pro-Val-Orn-Leu)

Conditions
ConditionsYield
With water; oxalic acid In N,N-dimethyl-formamide at 40℃; for 48h;
C68H98N12O13
1387574-96-0

C68H98N12O13

Gramicidin S
113-73-5

Gramicidin S

Conditions
ConditionsYield
With water; oxalic acid In N,N-dimethyl-formamide at 40℃; for 48h;3.6 mg
1-(tert-butoxycarbonyl)-L-proline
15761-39-4

1-(tert-butoxycarbonyl)-L-proline

t-Boc-L-valine
13734-41-3

t-Boc-L-valine

N-tert-butoxycarbonyl-L-leucine
13139-15-6

N-tert-butoxycarbonyl-L-leucine

(R)-5-(benzyloxycarbonylamino)-2-(tert-butoxycarbonylamino)pentanoic acid
2480-93-5, 16937-92-1

(R)-5-(benzyloxycarbonylamino)-2-(tert-butoxycarbonylamino)pentanoic acid

Boc-D-Phe-OH
18942-49-9

Boc-D-Phe-OH

Gramicidin S
113-73-5

Gramicidin S

Conditions
ConditionsYield
Stage #1: N-tert-butoxycarbonyl-L-leucine With benzotriazol-1-yloxyl-tris-(pyrrolidino)-phosphonium hexafluorophosphate; N-ethyl-N,N-diisopropylamine In N,N-dimethyl-formamide
Stage #2: With trifluoroacetic acid In dichloromethane
Stage #3: 1-(tert-butoxycarbonyl)-L-proline; t-Boc-L-valine; (R)-Nδ-benzyloxycarbonyl-Nα-(tert-butoxycarbonyl)-ornithine; Boc-D-Phe-OH Further stages;
C75H114N15O12PolS

C75H114N15O12PolS

Gramicidin S
113-73-5

Gramicidin S

Conditions
ConditionsYield
With N-ethyl-N,N-diisopropylamine In tetrahydrofuran at 20℃; for 6h; aminomethyl resin;55 mg
Fmoc-Val-OH
68858-20-8

Fmoc-Val-OH

Fmoc-Leu-OH
35661-60-0

Fmoc-Leu-OH

Fmoc-D-Phe-OH
86123-10-6

Fmoc-D-Phe-OH

(R)-Pyrrolidine-1,2-dicarboxylic acid 1-(9H-fluoren-9-ylmethyl) ester
71989-31-6, 109425-54-9, 144829-96-9, 101555-62-8

(R)-Pyrrolidine-1,2-dicarboxylic acid 1-(9H-fluoren-9-ylmethyl) ester

Fmoc-Lys(pg)-OH

Fmoc-Lys(pg)-OH

Gramicidin S
113-73-5

Gramicidin S

Conditions
ConditionsYield
Stage #1: Fmoc-D-Phe-OH With benzotriazol-1-ol; 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 dichloromethane; N,N-dimethyl-formamide for 1.5h;
Stage #2: With piperidine In N,N-dimethyl-formamide for 0.166667h;
Stage #3: Fmoc-Val-OH; Fmoc-Leu-OH; (R)-Pyrrolidine-1,2-dicarboxylic acid 1-(9H-fluoren-9-ylmethyl) ester; Fmoc-Lys(pg)-OH Further stages;
ethyl trifluoroacetate,
383-63-1

ethyl trifluoroacetate,

Gramicidin S
113-73-5

Gramicidin S

C64H90F6N12O12
86194-28-7

C64H90F6N12O12

Conditions
ConditionsYield
With triethylamine In methanol Ambient temperature;83%
Gramicidin S
113-73-5

Gramicidin S

methyl iodide
74-88-4

methyl iodide

C66H106N12O10(2+)*2I(1-)
99437-06-6

C66H106N12O10(2+)*2I(1-)

Conditions
ConditionsYield
With potassium hydrogencarbonate In methanol for 45h; Ambient temperature;75%
With potassium hydrogencarbonate In methanol Ambient temperature;75%
2,5-dioxopyrrolidin-(meta-diphenylphosphino)benzoate
1422391-48-7

2,5-dioxopyrrolidin-(meta-diphenylphosphino)benzoate

Gramicidin S
113-73-5

Gramicidin S

N,N'-(3,3'-((6R,9S,12S,15S,17aS,23R,26S,29S,32S,34aS)-6,23-dibenzyl-9,26-diisobutyl-15,32-diisopropyl-5,8,11,14,17,22,25,28,31,34-decaoxotetratriacontahydrodipyrrolo[1,2-a:1',2'-p] [1,4,7,10,13,16,19,22,25,28]decaazacyclotriacontine-12,29-diyl)bis(propane-3,1-diyl))bis(3-(diphenylphosphino)benzamide)
1422391-49-8

N,N'-(3,3'-((6R,9S,12S,15S,17aS,23R,26S,29S,32S,34aS)-6,23-dibenzyl-9,26-diisobutyl-15,32-diisopropyl-5,8,11,14,17,22,25,28,31,34-decaoxotetratriacontahydrodipyrrolo[1,2-a:1',2'-p] [1,4,7,10,13,16,19,22,25,28]decaazacyclotriacontine-12,29-diyl)bis(propane-3,1-diyl))bis(3-(diphenylphosphino)benzamide)

Conditions
ConditionsYield
With N-ethyl-N,N-diisopropylamine In dichloromethane at 20℃; for 16h; Inert atmosphere;48%
2,5-dioxopyrrolidin-(para-diphenylphosphino)benzoate

2,5-dioxopyrrolidin-(para-diphenylphosphino)benzoate

Gramicidin S
113-73-5

Gramicidin S

N,N'-(3,3'-((6R,9S,12S,15S,17aS,23R,26S,29S,32S,34aS)-6,23-dibenzyl-9,26-diisobutyl-15,32-diisopropyl-5,8,11,14,17,22,25,28,31,34 decaoxotetratriacontahydro dipyrrolo[1,2-a:1',2'-p] [1,4,7,10,13,16,19,22,25,28] decaazacyclotriacontine-12,29-diyl)bis(propane-3,1-diyl))bis(4-(diphenylphosphino)benzamide)
1422391-50-1

N,N'-(3,3'-((6R,9S,12S,15S,17aS,23R,26S,29S,32S,34aS)-6,23-dibenzyl-9,26-diisobutyl-15,32-diisopropyl-5,8,11,14,17,22,25,28,31,34 decaoxotetratriacontahydro dipyrrolo[1,2-a:1',2'-p] [1,4,7,10,13,16,19,22,25,28] decaazacyclotriacontine-12,29-diyl)bis(propane-3,1-diyl))bis(4-(diphenylphosphino)benzamide)

Conditions
ConditionsYield
With N-ethyl-N,N-diisopropylamine In dichloromethane at 20℃; for 16h; Inert atmosphere;48%
Gramicidin S
113-73-5

Gramicidin S

2,5-dioxopyrrolidin-1-yl 2-(diphenylphosphanyl)benzoate
291286-47-0

2,5-dioxopyrrolidin-1-yl 2-(diphenylphosphanyl)benzoate

N,N'-(3,3'-((6R,9S,12S,15S,17aS,23R,26S,29S,32S,34aS)-6,23-dibenzyl-9,26-diisobutyl-15,32-diisopropyl-5,8,11,14,17,22,25,28,31,34-decaoxotetratriacontahydrodipyrrolo[1,2-a:1',2'-p][1,4,7,10,13,16,19,22,25,28]decaazacyclotriacontine-12,29-diyl)bis(propane-3,1-diyl))bis(2-(diphenylphosphino)benzamide)
1422391-47-6

N,N'-(3,3'-((6R,9S,12S,15S,17aS,23R,26S,29S,32S,34aS)-6,23-dibenzyl-9,26-diisobutyl-15,32-diisopropyl-5,8,11,14,17,22,25,28,31,34-decaoxotetratriacontahydrodipyrrolo[1,2-a:1',2'-p][1,4,7,10,13,16,19,22,25,28]decaazacyclotriacontine-12,29-diyl)bis(propane-3,1-diyl))bis(2-(diphenylphosphino)benzamide)

Conditions
ConditionsYield
With N-ethyl-N,N-diisopropylamine In dichloromethane at 20℃; for 16h;39%
Gramicidin S
113-73-5

Gramicidin S

3-(diphenylphosphaneyl)propanoic acid N-hydroxysuccinimide ether

3-(diphenylphosphaneyl)propanoic acid N-hydroxysuccinimide ether

(6R,9S,12S,15S,17aS,23R,26S,29S,32S,34aS)-6,23-dibenzyl-12,29-bis(3-(3-(diphenylphosphino)propanoyloxyamino)propyl)-9,26-diisobutyl-15,32-diisopropyltetracosahydrodipyrrolo [1,2-a:1',2'-p] [1,4,7,10,13,16,19,22,25,28] decaaza cyclotriacontine-5,8,11,14,17,22,25,28,31,34-decaone

(6R,9S,12S,15S,17aS,23R,26S,29S,32S,34aS)-6,23-dibenzyl-12,29-bis(3-(3-(diphenylphosphino)propanoyloxyamino)propyl)-9,26-diisobutyl-15,32-diisopropyltetracosahydrodipyrrolo [1,2-a:1',2'-p] [1,4,7,10,13,16,19,22,25,28] decaaza cyclotriacontine-5,8,11,14,17,22,25,28,31,34-decaone

Conditions
ConditionsYield
With N-ethyl-N,N-diisopropylamine In dichloromethane at 20℃; for 16h; Inert atmosphere;16.8%
5-(4-carboxyphenyl)-10,15,20-tris(4-methylphenyl) porphyrin
61449-63-6

5-(4-carboxyphenyl)-10,15,20-tris(4-methylphenyl) porphyrin

Gramicidin S
113-73-5

Gramicidin S

C156H160N20O12

C156H160N20O12

Conditions
ConditionsYield
With benzotriazol-1-yloxyl-tris-(pyrrolidino)-phosphonium hexafluorophosphate; benzotriazol-1-ol Acylation;
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