cas 3056-18-6, 9-[2,3,5-TRI-O-ACETYL-BETA-D-RIBOFURANOSYL]-2,6-DICHLOROPURINE | Articles data ｜lookchem

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3056-18-6

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Nucleic acid related compounds. 118. Nonaqueous diazotization of aminopurine derivatives. Convenient access to 6-halo- and 2,6-dihalopurine nucleosides and 2′-deoxynucleosides with acyl or silyl halides
Treatment of 9-(2,3,5-tri-O-acetyl-β-D-ribofuranosyl)-2-amino-6-chloropurine (1) with TMS-Cl and benzyltriethylammonium nitrite (BTEA-NO2) in dichloromethane gave the crystalline 2,6-dichloropurine nucleoside 2, and acetyl chloride/BTEA-NO2 was equally effective (～85%, without chromatography). TMS-Br/tert-butyl nitrite/dibromomethane gave crystalline 2-bromo-6-chloro analogue 3 (85%). (Chloro or bromo)-dediazoniation of 3′,5′-di-O-acetyl-2′-deoxyadenosine (4) gave the 6-[chloro (5, 63%) or bromo (6, 80%)]purine deoxynucleosides, and 2′,3′,5′-tri-O-acetyladenosine (8) was converted into the 6-chloropurine nucleoside 9 (71%).
Francom, Paula,Robins, Morris J.
p. 666 - 669
(2007/10/03)

Anti-HCV nucleoside derivatives
The present invention comprises novel and known purine and pyrimidine nucleoside derivatives which have been discovered to be active against hepatitis C virus (HCV). The use of these derivatives for the treatment of HCV infection is claimed as are the novel nucleoside derivatives disclosed herein.
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(2008/06/13)

More Articles about upstream products of 3056-18-6

16321-99-6
2-amino-6-chloro-9-(2,3,5-tri-O-acetyl-β-D-ribofuranosyl)purine

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Chemical Properties

Melting Point: 158-159°C
Boiling Point: 555.3 °C at 760 mmHg
Flash Point:289.6 °C
Density: 1.69 g/cm³
Solubility:Chloroform (Slightly), DMSO (Slightly)
Storage Temp.:-20°C Freezer
Vapor Pressure: 2.27E-12mmHg at 25°C
Refractive Index: 1.671
PKA: -1.40±0.10(Predicted)
PSA: 131.73000
LogP: 1.45700

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