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Dayang Chem (Hangzhou) Co.,Ltd.

Dayangchem's 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. DayangChem can provide different quantities

2 -DEOXY-2 ,2 -DIFLURO-3 5 -BIS-O-BENZOYLCYTIDINE

Cas:134790-39-9

Min.Order:1 Kilogram

FOB Price: $3.0

Type:Lab/Research institutions

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Simagchem Corporation

Welcome to Simagchem, your partner in China as a premier supply of bulk specialty chemicals for industry and life science. We introduce experienced quality product and exceptional JIT service with instant market intelligence in China to benefit our

High quality 2',2'-Difluoro-2'-Deoxycytidine-3',5'-Dibenzoate supplier in China

Cas:134790-39-9

Min.Order:1 Kilogram

Negotiable

Type:Manufacturers

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Wuhan Fortuna Chemical Co.,Ltd

High quality 2',2'-Difluoro-2'-deoxycytidine-3',5'-dibenzoate CAS 134790-39-9 with factory price Company profile Wuhan Fortuna Chemical Co.,Ltd established in 2006, is a big integrative chemical enterprise being engaged in Ph

High quality 2',2'-Difluoro-2'-deoxycytidine-3',5'-dibenzoate CAS 134790-39-9 with factory price

Cas:134790-39-9

Min.Order:10 Gram

FOB Price: $10.0

Type:Trading Company

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Ality Chemical Corporation

The above product is Ality Chemical's strong item with best price, good quality and fast supply. Ality Chemical has been focusing on the research and production of this field for over 14 years. At the same time, we are always committed to providi

Factory Supply 2',2'-Difluoro-2'-Deoxycytidine-3',5'-Dibenzoate

Cas:134790-39-9

Min.Order:1

Negotiable

Type:Other

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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

2',2'-Difluoro-2'-deoxycytidine-3',5'-dibenzoate

Cas:134790-39-9

Min.Order:5 Kiloliter

FOB Price: $1.2 / 5.0

Type:Manufacturers

inquiry

Jinan Finer Chemical Co., Ltd

Product Description Product website: http://www.finerchem.com/pro01en/id/554.html Product Name 2',2'-Difluoro-2'-deoxycytidine-3',5'-dibenzoate

2',2'-Difluoro-2'-deoxycytidine-3',5'-dibenzoate

Cas:134790-39-9

Min.Order:1 Gram

FOB Price: $45.0

Type:Lab/Research institutions

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Henan Tianfu Chemical Co., Ltd.

Henan Tianfu Chemical Co., Ltd. is located in Zhengzhou High-tech Development Zone with import and export license. We passed ISO 9001:2008 in 2009, and won "High-tech Enterprise" by provincial government in 2013.The objective of the com

TIANFU-CHEM - 2',2'-Difluoro-2'-deoxycytidine-3',5'-dibenzoate

Cas:134790-39-9

Min.Order:1 Kilogram

FOB Price: $1000.0

Type:Lab/Research institutions

inquiry

Hebei Nengqian Chemical Import and Export Co., LTD

Our advantages: 1. All inquiries will be replied within 12 hours. 2. Dedication to quality, supply & service. 3. Strictly on selecting raw materials. 4. Reasonable & competitive price, fast lead time. 5. Sample is available for your eva

2',2'-Difluoro-2'-deoxycytidine-3',5'-dibenzoate

Cas:134790-39-9

Min.Order:1 Kilogram

FOB Price: $9.0 / 99.0

Type:Trading Company

inquiry

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

Low priceCAS 134790-39-9 with best price

Cas:134790-39-9

Min.Order:10 Gram

FOB Price: $146.0 / 176.0

Type:Trading Company

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LIDE PHARMACEUTICALS LIMITED

Advantage : LIDE PHARMACEUTICALS LTD. is a mid-small manufacturing-type enterprise, engaged in pharmaceutical intermediates of R&D, custom-made and production, and also involving trading chemicals for export. We have established the R&amp

2',2'-Difluoro-2'-deoxycytidine-3',5'-dibenzoate/ LIDE PHARMA- Factory supply / Best price

Cas:134790-39-9

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

Hebei Sankai Chemical Technology Co., Ltd

1. Product advantages ♦ High purity, all above 98.5%, no impurities after the dissolution ♦ We will test each batch to ensure quality ♦ OEM and private brand services designed for free ♦ Various cap colors available &diam

2',2'-Difluoro-2'-deoxycytidine-3',5'-dibenzoate CAS134790-39-9

Cas:134790-39-9

Min.Order:1 Kilogram

FOB Price: $7.0 / 10.0

Type:Trading Company

inquiry

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

Cytidine,2'-deoxy-2',2'-difluoro-, 3',5'-dibenzoate (9CI) 134790-39-9

Cas:134790-39-9

Min.Order:1 Kilogram

Negotiable

Type:Lab/Research institutions

inquiry

Shanghai Minstar Chemical Co., Ltd

2',2'-Difluoro-2'-deoxycytidine-3',5'-dibenzoate Chemical Properties Melting point 229-232°C Boiling point 608.4±65.0 °C(Predicted) density 1.45±0.1 g/cm3(Predicted) storage temp. Sealed in dr

2',2'-Difluoro-2'-deoxycytidine-3',5'-dibenzoate。

Cas:134790-39-9

Min.Order:1 Gram

Negotiable

Type:Lab/Research institutions

inquiry

Qingdao Beluga Import and Export Co., LTD

2',2'-Difluoro-2'-deoxycytidine-3',5'-dibenzoate CAS:134790-39-9 Qingdao Belugas Import and Export Co., Ltd. is a scientific and technological company integrating research and development, production and trade of chemical interme

2',2'-Difluoro-2'-deoxycytidine-3',5'-dibenzoate CAS:134790-39-9

Cas:134790-39-9

Min.Order:1 Gram

Negotiable

Type:Lab/Research institutions

inquiry

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

2'2'-Difluoro-2'-deoxycytidine-3',5'-dibenzoate

Cas:134790-39-9

Min.Order:1 Kilogram

Negotiable

Type:Lab/Research institutions

inquiry

HANWAYS CHEMPHARM CO.,LIMITED

we are reliable supplier for APIs and intermediates for international markets. We supply good quality with competitive price. We pursue long term business relations and win-win. Storage:Refrigerator Package:25kg/drum Application

2',2'-Difluoro-2'-deoxycytidine-3',5'-dibenzoate

Cas:134790-39-9

Min.Order:1 Kilogram

FOB Price: $1.0

Type:Trading Company

inquiry

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

Cytidine,2'-deoxy-2',2'-difluoro-, 3',5'-dibenzoate (9CI)

Cas:134790-39-9

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

Xiamen Hisunny Chemical Co.,Ltd

Best quality & Attractive price & Professional service; Trial & Pilot & Commercial Hisunny Chemical is a leading manufacturer and supplier of chemicals in China. We develop produce and distribute high quality intermediates, specia

2',2'-Difluoro-2'-Deoxycytidine-3',5'-Dibenzoate

Cas:134790-39-9

Min.Order:0

Negotiable

Type:Manufacturers

inquiry

Triumph International Development Limilted

Appearance:white or light yellow crystalline powder Storage:Store in a cool,dry place and keep away from direct strong light Package:As customer request Application:Used for research and industrial manufacture. Transportation:By

Gemcitabine intemediates

Cas:134790-39-9

Min.Order:100 Gram

Negotiable

Type:Lab/Research institutions

inquiry

Afine Chemicals Limited

Our Services 1. New Molecules R&D 2. Own test center HPLC NMR GC LC-MS 3. API and Intermediates from China reputed manufacturers 4. Documents support COA MOA MSDS DMF open part Our advantages 1. Government awarded company. Top 100 enter

2',2'-Difluoro-2'-deoxycytidine-3',5'-dibenzoate

Cas:134790-39-9

Min.Order:1 Kilogram

Negotiable

Type:Lab/Research institutions

inquiry

NewCan Biotech Limited

NewCan Biotech Limited was established in 2021 and is primarily engaged in the research, development, production, and sales of sugars, nucleosides, nucleotides, phosphorylated monomers, as well as next-generation antiviral and antitumor drug intermed

2',2'-Difluoro-2'-deoxycytidine-3',5'-dibenzoate

Cas:134790-39-9

Min.Order:1 Milligram

Negotiable

Type:Trading Company

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

Cytidine,2'-deoxy-2',2'-difluoro-, 3',5'-dibenzoate (9CI)

Cas:134790-39-9

Min.Order:0

Negotiable

Type:Lab/Research institutions

inquiry

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

High quality 2',2'-Difluoro-2'-Deoxycytidine-3',5'-Dibenzoate

Cas:134790-39-9

Min.Order:10 Gram

FOB Price: $100.0

Type:Lab/Research institutions

inquiry

Siwei Development Group Ltd.

Product name: 3',5'-Di-O-Benzoyl--2,2'-Difluoro-2'-Deoxy Cytidine CAS No.: 134790-39-9 Molecule Formula:C23H19F2N3O6 Molecule Weight:471.41 Purity: 99.0% Package: 25kg/drum Description:White powder Manufacture Standard

Lower Price 3',5'-Di-O-Benzoyl--2,2'-Difluoro-2'-Deoxy Cytidine

Cas:134790-39-9

Min.Order:1 Kilogram

Negotiable

Type:Trading Company

inquiry

Zibo Dorne chemical technology co. LTD

Product Details Grade: pharmaceutical grade Purity:99%+ ProductionCapacity: 1000 Kilogram/Month Scope of use: For scientific research only(The product must be used legally) Our Advantage 1. Best quality with competitive price. 2. Quick shipping,

2',2'-Difluoro-2'-deoxycytidine-3',5'-dibenzoate

Cas:134790-39-9

Min.Order:1 Kilogram

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,

2',2'-Difluoro-2'-deoxycytidine-3',5'-dibenzoate

Cas:134790-39-9

Min.Order:1 Milligram

Negotiable

Type:Trading Company

inquiry

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

TIANFU-CHEM - 2',2'-Difluoro-2'-deoxycytidine-3',5'-dibenzoate

Cas:134790-39-9

Min.Order:1 Kilogram

FOB Price: $18.0 / 20.0

Type:Trading Company

inquiry

Hangzhou Huarong Pharm Co., Ltd.

Hangzhou Huarong Pharm Co., Ltd.established since 2006 , has been actively developing specialty products for Finished Dosages, APIs, Intermediates, and Fine chemicals markets in North America, Europe, Korea, Japan, Mid-East and all over the World. Hu

2',2'-Difluoro-2'-deoxycytidine-3',5'-dibenzoate

Cas:134790-39-9

Min.Order:0

Negotiable

Type:Trading Company

inquiry

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

2',2'-Difluoro-2'-deoxycytidine-3',5'-dibenzoate

Cas:134790-39-9

Min.Order:1 Gram

Negotiable

Type:Lab/Research institutions

inquiry

Wuhan Zenuo Biological Medicine Technology Co Ltd

Product Name: 2',2'-Difluoro-2'-deoxycytidine-3',5'-dibenzoate Synonyms: 2',2'-Difluoro-2'-deoxycytidine-3',5'-dibenzoate (Gemcitabine impurity);2'-deoxy-2,2'-difluoro-3,5-dibenzyl-cytidine;2',

Synthetic route

3,5-di-O-benzoyl-2-deoxy-2,2-difluoro-1-O-methanesulfonyl-D-erythro-pentofuranose
134877-42-2, 134877-43-3, 122111-11-9

3,5-di-O-benzoyl-2-deoxy-2,2-difluoro-1-O-methanesulfonyl-D-erythro-pentofuranose

2,4-O,N-bis(trimethylsilyl)cytosine
18037-10-0

2,4-O,N-bis(trimethylsilyl)cytosine

(2'-deoxy-2',2'-difluorocytidine)-3',5'-dibenzoate
134790-39-9

(2'-deoxy-2',2'-difluorocytidine)-3',5'-dibenzoate

Conditions
ConditionsYield
In toluene at 120℃; for 6h; Temperature;97.38%
4-Amino-1-trimethylsilanyl-1H-pyrimidin-2-one
73416-12-3

4-Amino-1-trimethylsilanyl-1H-pyrimidin-2-one

2-deoxy-2,2-difluoro-D-erythro-pentofuranose-3,5-diphenylmethyl ester-1-methanesulfonate
134877-42-2

2-deoxy-2,2-difluoro-D-erythro-pentofuranose-3,5-diphenylmethyl ester-1-methanesulfonate

(2'-deoxy-2',2'-difluorocytidine)-3',5'-dibenzoate
134790-39-9

(2'-deoxy-2',2'-difluorocytidine)-3',5'-dibenzoate

Conditions
ConditionsYield
With phosphomolybdic acid In pentan-1-ol at 70 - 137℃; for 5h; Reagent/catalyst; Solvent; Temperature; Reflux;95%
2-deoxy-2,2-difluoro-D-erythro-pentofuranose-3,5-diphenylmethyl ester-1-methanesulfonate
134877-42-2

2-deoxy-2,2-difluoro-D-erythro-pentofuranose-3,5-diphenylmethyl ester-1-methanesulfonate

2,4-O,N-bis(trimethylsilyl)cytosine
18037-10-0

2,4-O,N-bis(trimethylsilyl)cytosine

(2'-deoxy-2',2'-difluorocytidine)-3',5'-dibenzoate
134790-39-9

(2'-deoxy-2',2'-difluorocytidine)-3',5'-dibenzoate

Conditions
ConditionsYield
at 120℃; for 3h; Heating;85.5%
3,5-di-O-benzoyl-2-deoxy-2,2-difluoro-1-O-methanesulfonyl-D-erythro-pentofuranose
134877-42-2, 134877-43-3, 122111-11-9

3,5-di-O-benzoyl-2-deoxy-2,2-difluoro-1-O-methanesulfonyl-D-erythro-pentofuranose

2,4-O,N-bis(trimethylsilyl)cytosine
18037-10-0

2,4-O,N-bis(trimethylsilyl)cytosine

A

C23H19F2N3O6
134790-40-2

C23H19F2N3O6

B

(2'-deoxy-2',2'-difluorocytidine)-3',5'-dibenzoate
134790-39-9

(2'-deoxy-2',2'-difluorocytidine)-3',5'-dibenzoate

Conditions
ConditionsYield
With trimethylsilyl trifluoromethanesulfonate 1) 1,1,2-trichloroethane, r.t., 30 min, 2) 113 deg C, 18 h; Yield given. Multistep reaction. Yields of byproduct given;
(2R,3R)-2-((benzoyloxy)methyl)-4,4-difluoro-5-hydroxyoxolan-3-yl benzoate
1173824-58-2

(2R,3R)-2-((benzoyloxy)methyl)-4,4-difluoro-5-hydroxyoxolan-3-yl benzoate

(2'-deoxy-2',2'-difluorocytidine)-3',5'-dibenzoate
134790-39-9

(2'-deoxy-2',2'-difluorocytidine)-3',5'-dibenzoate

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: 100 percent / triethylamine / CH2Cl2 / 2 h / 23 °C
2: 1) Me3SiOTf / 1) 1,1,2-trichloroethane, r.t., 30 min, 2) 113 deg C, 18 h
View Scheme
Multi-step reaction with 2 steps
1: triethylamine / dichloromethane / 2 h / 5 - 20 °C
2: 3 h / 120 °C / Heating
View Scheme
2-deoxy-2,2-difluoro-D-erythro-pentofuranos-1-ulose-3,5-dibenzoate
122111-01-7

2-deoxy-2,2-difluoro-D-erythro-pentofuranos-1-ulose-3,5-dibenzoate

(2'-deoxy-2',2'-difluorocytidine)-3',5'-dibenzoate
134790-39-9

(2'-deoxy-2',2'-difluorocytidine)-3',5'-dibenzoate

Conditions
ConditionsYield
Multi-step reaction with 3 steps
1: 100 percent / LiAl(OBu-t)3H / diethyl ether; tetrahydrofuran / 1 h / 10 - 30 °C
2: 100 percent / triethylamine / CH2Cl2 / 2 h / 23 °C
3: 1) Me3SiOTf / 1) 1,1,2-trichloroethane, r.t., 30 min, 2) 113 deg C, 18 h
View Scheme
Cytosine
71-30-7

Cytosine

2-deoxy-2,2-difluoro-D-erythro-pentofuranose-3,5-diphenylmethyl ester-1-methanesulfonate
134877-42-2

2-deoxy-2,2-difluoro-D-erythro-pentofuranose-3,5-diphenylmethyl ester-1-methanesulfonate

A

C23H19F2N3O6
134790-40-2

C23H19F2N3O6

B

(2'-deoxy-2',2'-difluorocytidine)-3',5'-dibenzoate
134790-39-9

(2'-deoxy-2',2'-difluorocytidine)-3',5'-dibenzoate

Conditions
ConditionsYield
With potassium sulfate; lithium chloride at 120 - 125℃; for 4h; Overall yield = 85.7 %; Overall yield = 405.2 g;A n/a
B n/a
3,5-di-O-benzoyl-2-deoxy-2,2-difluoro-1-O-methanesulfonyl-D-erythro-pentofuranose
134877-42-2, 134877-43-3, 122111-11-9

3,5-di-O-benzoyl-2-deoxy-2,2-difluoro-1-O-methanesulfonyl-D-erythro-pentofuranose

(2'-deoxy-2',2'-difluorocytidine)-3',5'-dibenzoate
134790-39-9

(2'-deoxy-2',2'-difluorocytidine)-3',5'-dibenzoate

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: ethanol / 50 - 60 °C
2: 3 h / 120 °C / Heating
View Scheme
(2'-deoxy-2',2'-difluorocytidine)-3',5'-dibenzoate
134790-39-9

(2'-deoxy-2',2'-difluorocytidine)-3',5'-dibenzoate

C23H20F2N2O7

C23H20F2N2O7

Conditions
ConditionsYield
With palladium 10% on activated carbon; hydrogen; acetic acid In water; ethyl acetate at 50 - 60℃; under 3750.38 Torr; for 18h;95.6%
Stage #1: (2'-deoxy-2',2'-difluorocytidine)-3',5'-dibenzoate With hydrogenchloride In water; ethyl acetate for 0.0833333h;
Stage #2: With formic acid; 5%-palladium/activated carbon In water; ethyl acetate at 68 - 70℃; for 24h; Inert atmosphere;
(2'-deoxy-2',2'-difluorocytidine)-3',5'-dibenzoate
134790-39-9

(2'-deoxy-2',2'-difluorocytidine)-3',5'-dibenzoate

gemcitabine
95058-81-4

gemcitabine

Conditions
ConditionsYield
With ammonium hydroxide In methanol at 20℃; for 3h;82.7%
With sodium t-butanolate In methanol at 20℃; for 2h;
(2'-deoxy-2',2'-difluorocytidine)-3',5'-dibenzoate
134790-39-9

(2'-deoxy-2',2'-difluorocytidine)-3',5'-dibenzoate

Benzoic acid (2R,3R,5R)-5-(4-amino-2-oxo-2H-pyrimidin-1-yl)-4,4-difluoro-3-hydroxy-tetrahydro-furan-2-ylmethyl ester

Benzoic acid (2R,3R,5R)-5-(4-amino-2-oxo-2H-pyrimidin-1-yl)-4,4-difluoro-3-hydroxy-tetrahydro-furan-2-ylmethyl ester

Conditions
ConditionsYield
With ammonia In methanol
(2'-deoxy-2',2'-difluorocytidine)-3',5'-dibenzoate
134790-39-9

(2'-deoxy-2',2'-difluorocytidine)-3',5'-dibenzoate

C34H55F2N3O8

C34H55F2N3O8

Conditions
ConditionsYield
Multi-step reaction with 3 steps
1: dmap; triethylamine / 1,4-dioxane / 5 h / 40 °C
2: sodium hydroxide / methanol / 4 h / 20 °C
3: triethylamine / dichloromethane / 20 °C
View Scheme
Multi-step reaction with 3 steps
1: N,N-lutidine / 1,4-dioxane / 5 h / 40 °C
2: sodium hydroxide; sodium methylate / 4 h / 20 °C
3: triethylamine / dichloromethane / 20 °C
View Scheme
(2'-deoxy-2',2'-difluorocytidine)-3',5'-dibenzoate
134790-39-9

(2'-deoxy-2',2'-difluorocytidine)-3',5'-dibenzoate

2',2'-difluoro-2'-deoxycytidine 3',5'-di-n-decanoate

2',2'-difluoro-2'-deoxycytidine 3',5'-di-n-decanoate

Conditions
ConditionsYield
Multi-step reaction with 4 steps
1: dmap; triethylamine / 1,4-dioxane / 5 h / 40 °C
2: sodium hydroxide / methanol / 4 h / 20 °C
3: triethylamine / dichloromethane / 20 °C
4: trifluoroacetic acid / dichloromethane / 4 h / 20 °C
View Scheme
Multi-step reaction with 4 steps
1: N,N-lutidine / 1,4-dioxane / 5 h / 40 °C
2: sodium hydroxide; sodium methylate / 4 h / 20 °C
3: triethylamine / dichloromethane / 20 °C
4: trifluoroacetic acid / dichloromethane / 4 h / 20 °C
View Scheme
(2'-deoxy-2',2'-difluorocytidine)-3',5'-dibenzoate
134790-39-9

(2'-deoxy-2',2'-difluorocytidine)-3',5'-dibenzoate

C30H37F2N3O6Si

C30H37F2N3O6Si

Conditions
ConditionsYield
Multi-step reaction with 3 steps
1: dmap; triethylamine / 1,4-dioxane / 5 h / 40 °C
2: sodium hydroxide / methanol / 4 h / 20 °C
3: dmap / N,N-dimethyl-formamide / 20 °C
View Scheme
Multi-step reaction with 3 steps
1: N,N-lutidine / 1,4-dioxane / 5 h / 40 °C
2: sodium hydroxide; sodium methylate / 4 h / 20 °C
3: N,N-lutidine / N,N-dimethyl-formamide / 20 °C
View Scheme
(2'-deoxy-2',2'-difluorocytidine)-3',5'-dibenzoate
134790-39-9

(2'-deoxy-2',2'-difluorocytidine)-3',5'-dibenzoate

tert-butyl [1-((2R,4R,5R)-3,3-difluoro-4-hydroxy-5-hydroxymethyl-tetrahydrofuran-2-yl)-2-oxo-1,2-dihydro-pyrimidin-4-yl]-carbamate

tert-butyl [1-((2R,4R,5R)-3,3-difluoro-4-hydroxy-5-hydroxymethyl-tetrahydrofuran-2-yl)-2-oxo-1,2-dihydro-pyrimidin-4-yl]-carbamate

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: dmap; triethylamine / 1,4-dioxane / 5 h / 40 °C
2: sodium hydroxide / methanol / 4 h / 20 °C
View Scheme
Multi-step reaction with 2 steps
1: N,N-lutidine / 1,4-dioxane / 5 h / 40 °C
2: sodium hydroxide; sodium methylate / 4 h / 20 °C
View Scheme
di-tert-butyl dicarbonate
24424-99-5

di-tert-butyl dicarbonate

(2'-deoxy-2',2'-difluorocytidine)-3',5'-dibenzoate
134790-39-9

(2'-deoxy-2',2'-difluorocytidine)-3',5'-dibenzoate

C28H27F2N3O8

C28H27F2N3O8

Conditions
ConditionsYield
With dmap; triethylamine In 1,4-dioxane at 40℃; for 5h;
With N,N-lutidine In 1,4-dioxane at 40℃; for 5h;
3,5-di-O-benzoyl-2-deoxy-2,2-difluoro-1-O-methanesulfonyl-D-erythro-pentofuranose
134877-42-2, 134877-43-3, 122111-11-9

3,5-di-O-benzoyl-2-deoxy-2,2-difluoro-1-O-methanesulfonyl-D-erythro-pentofuranose

2,4-O,N-bis(trimethylsilyl)cytosine
18037-10-0

2,4-O,N-bis(trimethylsilyl)cytosine

(2'-deoxy-2',2'-difluorocytidine)-3',5'-dibenzoate
134790-39-9

(2'-deoxy-2',2'-difluorocytidine)-3',5'-dibenzoate

Conditions
ConditionsYield
In toluene at 120℃; for 6h; Temperature;97.38%
4-Amino-1-trimethylsilanyl-1H-pyrimidin-2-one
73416-12-3

4-Amino-1-trimethylsilanyl-1H-pyrimidin-2-one

2-deoxy-2,2-difluoro-D-erythro-pentofuranose-3,5-diphenylmethyl ester-1-methanesulfonate
134877-42-2

2-deoxy-2,2-difluoro-D-erythro-pentofuranose-3,5-diphenylmethyl ester-1-methanesulfonate

(2'-deoxy-2',2'-difluorocytidine)-3',5'-dibenzoate
134790-39-9

(2'-deoxy-2',2'-difluorocytidine)-3',5'-dibenzoate

Conditions
ConditionsYield
With phosphomolybdic acid In pentan-1-ol at 70 - 137℃; for 5h; Reagent/catalyst; Solvent; Temperature; Reflux;95%
2-deoxy-2,2-difluoro-D-erythro-pentofuranose-3,5-diphenylmethyl ester-1-methanesulfonate
134877-42-2

2-deoxy-2,2-difluoro-D-erythro-pentofuranose-3,5-diphenylmethyl ester-1-methanesulfonate

2,4-O,N-bis(trimethylsilyl)cytosine
18037-10-0

2,4-O,N-bis(trimethylsilyl)cytosine

(2'-deoxy-2',2'-difluorocytidine)-3',5'-dibenzoate
134790-39-9

(2'-deoxy-2',2'-difluorocytidine)-3',5'-dibenzoate

Conditions
ConditionsYield
at 120℃; for 3h; Heating;85.5%
3,5-di-O-benzoyl-2-deoxy-2,2-difluoro-1-O-methanesulfonyl-D-erythro-pentofuranose
134877-42-2, 134877-43-3, 122111-11-9

3,5-di-O-benzoyl-2-deoxy-2,2-difluoro-1-O-methanesulfonyl-D-erythro-pentofuranose

2,4-O,N-bis(trimethylsilyl)cytosine
18037-10-0

2,4-O,N-bis(trimethylsilyl)cytosine

A

C23H19F2N3O6
134790-40-2

C23H19F2N3O6

B

(2'-deoxy-2',2'-difluorocytidine)-3',5'-dibenzoate
134790-39-9

(2'-deoxy-2',2'-difluorocytidine)-3',5'-dibenzoate

Conditions
ConditionsYield
With trimethylsilyl trifluoromethanesulfonate 1) 1,1,2-trichloroethane, r.t., 30 min, 2) 113 deg C, 18 h; Yield given. Multistep reaction. Yields of byproduct given;
(2R,3R)-2-((benzoyloxy)methyl)-4,4-difluoro-5-hydroxyoxolan-3-yl benzoate
1173824-58-2

(2R,3R)-2-((benzoyloxy)methyl)-4,4-difluoro-5-hydroxyoxolan-3-yl benzoate

(2'-deoxy-2',2'-difluorocytidine)-3',5'-dibenzoate
134790-39-9

(2'-deoxy-2',2'-difluorocytidine)-3',5'-dibenzoate

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: 100 percent / triethylamine / CH2Cl2 / 2 h / 23 °C
2: 1) Me3SiOTf / 1) 1,1,2-trichloroethane, r.t., 30 min, 2) 113 deg C, 18 h
View Scheme
Multi-step reaction with 2 steps
1: triethylamine / dichloromethane / 2 h / 5 - 20 °C
2: 3 h / 120 °C / Heating
View Scheme
2-deoxy-2,2-difluoro-D-erythro-pentonic acid γ-lactone 3,5-dibenzoate
122111-01-7

2-deoxy-2,2-difluoro-D-erythro-pentonic acid γ-lactone 3,5-dibenzoate

(2'-deoxy-2',2'-difluorocytidine)-3',5'-dibenzoate
134790-39-9

(2'-deoxy-2',2'-difluorocytidine)-3',5'-dibenzoate

Conditions
ConditionsYield
Multi-step reaction with 3 steps
1: 100 percent / LiAl(OBu-t)3H / diethyl ether; tetrahydrofuran / 1 h / 10 - 30 °C
2: 100 percent / triethylamine / CH2Cl2 / 2 h / 23 °C
3: 1) Me3SiOTf / 1) 1,1,2-trichloroethane, r.t., 30 min, 2) 113 deg C, 18 h
View Scheme
Cytosine
71-30-7

Cytosine

2-deoxy-2,2-difluoro-D-erythro-pentofuranose-3,5-diphenylmethyl ester-1-methanesulfonate
134877-42-2

2-deoxy-2,2-difluoro-D-erythro-pentofuranose-3,5-diphenylmethyl ester-1-methanesulfonate

A

C23H19F2N3O6
134790-40-2

C23H19F2N3O6

B

(2'-deoxy-2',2'-difluorocytidine)-3',5'-dibenzoate
134790-39-9

(2'-deoxy-2',2'-difluorocytidine)-3',5'-dibenzoate

Conditions
ConditionsYield
With potassium sulfate; lithium chloride at 120 - 125℃; for 4h; Overall yield = 85.7 %; Overall yield = 405.2 g;A n/a
B n/a
3,5-di-O-benzoyl-2-deoxy-2,2-difluoro-1-O-methanesulfonyl-D-erythro-pentofuranose
134877-42-2, 134877-43-3, 122111-11-9

3,5-di-O-benzoyl-2-deoxy-2,2-difluoro-1-O-methanesulfonyl-D-erythro-pentofuranose

(2'-deoxy-2',2'-difluorocytidine)-3',5'-dibenzoate
134790-39-9

(2'-deoxy-2',2'-difluorocytidine)-3',5'-dibenzoate

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: ethanol / 50 - 60 °C
2: 3 h / 120 °C / Heating
View Scheme
(2'-deoxy-2',2'-difluorocytidine)-3',5'-dibenzoate
134790-39-9

(2'-deoxy-2',2'-difluorocytidine)-3',5'-dibenzoate

C23H20F2N2O7

C23H20F2N2O7

Conditions
ConditionsYield
With palladium 10% on activated carbon; hydrogen; acetic acid In water; ethyl acetate at 50 - 60℃; under 3750.38 Torr; for 18h;95.6%
Stage #1: (2'-deoxy-2',2'-difluorocytidine)-3',5'-dibenzoate With hydrogenchloride In water; ethyl acetate for 0.0833333h;
Stage #2: With formic acid; 5%-palladium/activated carbon In water; ethyl acetate at 68 - 70℃; for 24h; Inert atmosphere;
(2'-deoxy-2',2'-difluorocytidine)-3',5'-dibenzoate
134790-39-9

(2'-deoxy-2',2'-difluorocytidine)-3',5'-dibenzoate

gemcitabine
95058-81-4

gemcitabine

Conditions
ConditionsYield
With ammonium hydroxide In methanol at 20℃; for 3h;82.7%
With sodium t-butanolate In methanol at 20℃; for 2h;
(2'-deoxy-2',2'-difluorocytidine)-3',5'-dibenzoate
134790-39-9

(2'-deoxy-2',2'-difluorocytidine)-3',5'-dibenzoate

Benzoic acid (2R,3R,5R)-5-(4-amino-2-oxo-2H-pyrimidin-1-yl)-4,4-difluoro-3-hydroxy-tetrahydro-furan-2-ylmethyl ester

Benzoic acid (2R,3R,5R)-5-(4-amino-2-oxo-2H-pyrimidin-1-yl)-4,4-difluoro-3-hydroxy-tetrahydro-furan-2-ylmethyl ester

Conditions
ConditionsYield
With ammonia In methanol
(2'-deoxy-2',2'-difluorocytidine)-3',5'-dibenzoate
134790-39-9

(2'-deoxy-2',2'-difluorocytidine)-3',5'-dibenzoate

C23H22F2N2O7

C23H22F2N2O7

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1.1: hydrogenchloride / ethyl acetate; water / 0.08 h
1.2: 24 h / 68 - 70 °C / Inert atmosphere
2.1: cerium(III) chloride heptahydrate / dichloromethane; ethanol / 0.08 h
2.2: 2 h / 0 - 6 °C
View Scheme
Multi-step reaction with 2 steps
1: acetic acid; palladium 10% on activated carbon; hydrogen / ethyl acetate; water / 18 h / 50 - 60 °C / 3750.38 Torr
2: cerium(III) chloride heptahydrate; sodium tetrahydroborate / water; dichloromethane; ethanol / 2 h / 6 °C
View Scheme
(2'-deoxy-2',2'-difluorocytidine)-3',5'-dibenzoate
134790-39-9

(2'-deoxy-2',2'-difluorocytidine)-3',5'-dibenzoate

2’-deoxy-2’,2’-difluorotetrahydrouridine
1141397-48-9

2’-deoxy-2’,2’-difluorotetrahydrouridine

Conditions
ConditionsYield
Multi-step reaction with 3 steps
1.1: hydrogenchloride / ethyl acetate; water / 0.08 h
1.2: 24 h / 68 - 70 °C / Inert atmosphere
2.1: cerium(III) chloride heptahydrate / dichloromethane; ethanol / 0.08 h
2.2: 2 h / 0 - 6 °C
3.1: ammonia / methanol / 27 h / 25 °C
View Scheme
Multi-step reaction with 3 steps
1: acetic acid; palladium 10% on activated carbon; hydrogen / ethyl acetate; water / 18 h / 50 - 60 °C / 3750.38 Torr
2: cerium(III) chloride heptahydrate; sodium tetrahydroborate / water; dichloromethane; ethanol / 2 h / 6 °C
3: 1,8-diazabicyclo[5.4.0]undec-7-ene / methanol / 3 h / 40 °C
View Scheme
(2'-deoxy-2',2'-difluorocytidine)-3',5'-dibenzoate
134790-39-9

(2'-deoxy-2',2'-difluorocytidine)-3',5'-dibenzoate

(4R)-2’-deoxy-2’,2’-difluoro-3,4,5,6-tetrahydrouridine
1141397-80-9

(4R)-2’-deoxy-2’,2’-difluoro-3,4,5,6-tetrahydrouridine

Conditions
ConditionsYield
Multi-step reaction with 4 steps
1.1: hydrogenchloride / ethyl acetate; water / 0.08 h
1.2: 24 h / 68 - 70 °C / Inert atmosphere
2.1: cerium(III) chloride heptahydrate / dichloromethane; ethanol / 0.08 h
2.2: 2 h / 0 - 6 °C
3.1: ammonia / methanol / 27 h / 25 °C
4.1: 1,8-diazabicyclo[5.4.0]undec-7-ene / water; acetonitrile / 74 h / 25 °C / Large scale
4.2: 16 h / 0 - 40 °C / Large scale
View Scheme
Multi-step reaction with 4 steps
1: acetic acid; palladium 10% on activated carbon; hydrogen / ethyl acetate; water / 18 h / 50 - 60 °C / 3750.38 Torr
2: cerium(III) chloride heptahydrate; sodium tetrahydroborate / water; dichloromethane; ethanol / 2 h / 6 °C
3: 1,8-diazabicyclo[5.4.0]undec-7-ene / methanol / 3 h / 40 °C
4: 1,8-diazabicyclo[5.4.0]undec-7-ene / water; acetonitrile / 48 h / 20 - 30 °C
View Scheme
(2'-deoxy-2',2'-difluorocytidine)-3',5'-dibenzoate
134790-39-9

(2'-deoxy-2',2'-difluorocytidine)-3',5'-dibenzoate

C9H9F2N3O6P(1-)*Na(1+)

C9H9F2N3O6P(1-)*Na(1+)

Conditions
ConditionsYield
Multi-step reaction with 3 steps
1.1: ammonium hydroxide / methanol / 3 h / 20 °C
2.1: pyridine; trichlorophosphate / 0 - 20 °C
2.2: 0.5 h / pH 3 - 4
3.1: sodium hydrogencarbonate / ethanol; water / 3 h
View Scheme
(2'-deoxy-2',2'-difluorocytidine)-3',5'-dibenzoate
134790-39-9

(2'-deoxy-2',2'-difluorocytidine)-3',5'-dibenzoate

1-[(4aR,6R,7aR)-7,7-difluoro-2-hydroxy-2-oxo-4,4a,6,7a-tetrahydrofuro[3,2-d][1,3,2]dioxaphosphinin-6-yl]-4-amino-pyrimidin-2-one

1-[(4aR,6R,7aR)-7,7-difluoro-2-hydroxy-2-oxo-4,4a,6,7a-tetrahydrofuro[3,2-d][1,3,2]dioxaphosphinin-6-yl]-4-amino-pyrimidin-2-one

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1.1: ammonium hydroxide / methanol / 3 h / 20 °C
2.1: pyridine; trichlorophosphate / 0 - 20 °C
2.2: 0.5 h / pH 3 - 4
View Scheme
(2'-deoxy-2',2'-difluorocytidine)-3',5'-dibenzoate
134790-39-9

(2'-deoxy-2',2'-difluorocytidine)-3',5'-dibenzoate

C34H55F2N3O8

C34H55F2N3O8

Conditions
ConditionsYield
Multi-step reaction with 3 steps
1: dmap; triethylamine / 1,4-dioxane / 5 h / 40 °C
2: sodium hydroxide / methanol / 4 h / 20 °C
3: triethylamine / dichloromethane / 20 °C
View Scheme
Multi-step reaction with 3 steps
1: N,N-lutidine / 1,4-dioxane / 5 h / 40 °C
2: sodium hydroxide; sodium methylate / 4 h / 20 °C
3: triethylamine / dichloromethane / 20 °C
View Scheme
(2'-deoxy-2',2'-difluorocytidine)-3',5'-dibenzoate
134790-39-9

(2'-deoxy-2',2'-difluorocytidine)-3',5'-dibenzoate

2',2'-difluoro-2'-deoxycytidine 3',5'-di-n-decanoate

2',2'-difluoro-2'-deoxycytidine 3',5'-di-n-decanoate

Conditions
ConditionsYield
Multi-step reaction with 4 steps
1: dmap; triethylamine / 1,4-dioxane / 5 h / 40 °C
2: sodium hydroxide / methanol / 4 h / 20 °C
3: triethylamine / dichloromethane / 20 °C
4: trifluoroacetic acid / dichloromethane / 4 h / 20 °C
View Scheme
Multi-step reaction with 4 steps
1: N,N-lutidine / 1,4-dioxane / 5 h / 40 °C
2: sodium hydroxide; sodium methylate / 4 h / 20 °C
3: triethylamine / dichloromethane / 20 °C
4: trifluoroacetic acid / dichloromethane / 4 h / 20 °C
View Scheme
(2'-deoxy-2',2'-difluorocytidine)-3',5'-dibenzoate
134790-39-9

(2'-deoxy-2',2'-difluorocytidine)-3',5'-dibenzoate

C30H37F2N3O6Si

C30H37F2N3O6Si

Conditions
ConditionsYield
Multi-step reaction with 3 steps
1: dmap; triethylamine / 1,4-dioxane / 5 h / 40 °C
2: sodium hydroxide / methanol / 4 h / 20 °C
3: dmap / N,N-dimethyl-formamide / 20 °C
View Scheme
Multi-step reaction with 3 steps
1: N,N-lutidine / 1,4-dioxane / 5 h / 40 °C
2: sodium hydroxide; sodium methylate / 4 h / 20 °C
3: N,N-lutidine / N,N-dimethyl-formamide / 20 °C
View Scheme
(2'-deoxy-2',2'-difluorocytidine)-3',5'-dibenzoate
134790-39-9

(2'-deoxy-2',2'-difluorocytidine)-3',5'-dibenzoate

tert-butyl [1-((2R,4R,5R)-3,3-difluoro-4-hydroxy-5-hydroxymethyl-tetrahydrofuran-2-yl)-2-oxo-1,2-dihydro-pyrimidin-4-yl]-carbamate

tert-butyl [1-((2R,4R,5R)-3,3-difluoro-4-hydroxy-5-hydroxymethyl-tetrahydrofuran-2-yl)-2-oxo-1,2-dihydro-pyrimidin-4-yl]-carbamate

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: dmap; triethylamine / 1,4-dioxane / 5 h / 40 °C
2: sodium hydroxide / methanol / 4 h / 20 °C
View Scheme
Multi-step reaction with 2 steps
1: N,N-lutidine / 1,4-dioxane / 5 h / 40 °C
2: sodium hydroxide; sodium methylate / 4 h / 20 °C
View Scheme
di-tert-butyl dicarbonate
24424-99-5

di-tert-butyl dicarbonate

(2'-deoxy-2',2'-difluorocytidine)-3',5'-dibenzoate
134790-39-9

(2'-deoxy-2',2'-difluorocytidine)-3',5'-dibenzoate

C28H27F2N3O8

C28H27F2N3O8

Conditions
ConditionsYield
With dmap; triethylamine In 1,4-dioxane at 40℃; for 5h;
With N,N-lutidine In 1,4-dioxane at 40℃; for 5h;
n-decyl chloroformate
55488-51-2

n-decyl chloroformate

(2'-deoxy-2',2'-difluorocytidine)-3',5'-dibenzoate
134790-39-9

(2'-deoxy-2',2'-difluorocytidine)-3',5'-dibenzoate

C34H39F2N3O8

C34H39F2N3O8

Conditions
ConditionsYield
With triethylamine In dichloromethane at 20℃; for 1.5h;
Reaxys ID: 37235391

Reaxys ID: 37235391

(2'-deoxy-2',2'-difluorocytidine)-3',5'-dibenzoate
134790-39-9

(2'-deoxy-2',2'-difluorocytidine)-3',5'-dibenzoate

Reaxys ID: 37235389

Reaxys ID: 37235389

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