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355145-91-4

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355145-91-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 355145-91-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,5,5,1,4 and 5 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 355145-91:
(8*3)+(7*5)+(6*5)+(5*1)+(4*4)+(3*5)+(2*9)+(1*1)=144
144 % 10 = 4
So 355145-91-4 is a valid CAS Registry Number.

355145-91-4Relevant articles and documents

Stereoisomeric sugar-derived indolizines as versatile building blocks: Synthesis of enantiopure Di- and tetrahydroxyindolizidines

Paolucci,Mattioli

, p. 4787 - 4794 (2007/10/03)

The synthesis of the sugar-derived (1S,2R,8aR)-1,2-di-O-isopropylidene-1,2,3,5,6,8a-hexahydro-5oxoindolizine (8) and by analogy of the corresponding stereoisomers ent-8 and ent-7, an epimer at C2 of ent-8, has been accomplished in a straightforward manner. The carbon-carbon double bond and the carbonyl functionalities on the six-membered ring make these nitrogen-containing heterocycles useful building blocks for the efficient preparation of a variety of enantiopure polyhydroxylated indolizidines of interest for their glycosidase inhibitory activity. We report here the synthesis of 2,8a-diepilentiginosine 12 from 8 and the preparation of stereoisomeric 1,2,7,8tetrahydroxyindolizidines 9-11 performed by OsO4-catalyzed double bond syn dihydroxylation of 7 and 8, followed by deoxygenation of the amide group.

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