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1338072-46-0

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1338072-46-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1338072-46-0 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,3,3,8,0,7 and 2 respectively; the second part has 2 digits, 4 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 1338072-46:
(9*1)+(8*3)+(7*3)+(6*8)+(5*0)+(4*7)+(3*2)+(2*4)+(1*6)=150
150 % 10 = 0
So 1338072-46-0 is a valid CAS Registry Number.

1338072-46-0Downstream Products

1338072-46-0Relevant articles and documents

Sugar-modified derivatives of cytostatic 6-(het)aryl-7-deazapurine nucleosides: 2′-c-methylribonucleosides, arabinonucleosides and 2′-deoxy-2′-fluoroarabinonucleosides

Naus, Petr,Perlikova, Pavla,Pohl, Radek,Hocek, Michal

experimental part, p. 957 - 988 (2012/06/16)

A series of novel sugar-modified derivatives of cytostatic 6-hetaryl-7-deazapurine ribonucleo-sides: 2′-C-methylribonucleosides, arabinonucleosides and 2′-deoxy-2′-fluoroarabinonucleo-sides bearing an alkyl, aryl and hetaryl group in position 6 were prepared by palladium catalyzed cross-coupling reactions of corresponding (protected) 6-chloro-(7-fluoro)-7-deazapurine nucleosides with (het)arylboronic, hetarylstannanes and trimethylaluminium eventually followed by deprotection. Key intermediate 6-chloro-7-deazapurine 2′-C-methyl-β-D-ribofuranoside was prepared via a stereoselective nucleobase anion glycosylation with toluoyl-protected 1,2-anhydro-2-C-methylribofuranose. The 1,2-anhydro sugar was synthesized in 3 steps starting from readily available 2-C-methylribonolactone. The 6-chloro-7-deazapurine arabinofuranoside intermediate was obtained by epimerization from 3′,5′-protected 6-chloro-7-deazapurine ribofuranoside via 2′-hydroxyl oxidation followed by reduction. None of the prepared compounds showed any considerable cytostatic or antiviral activity.

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