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155855-55-3

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155855-55-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 155855-55-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,5,8,5 and 5 respectively; the second part has 2 digits, 5 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 155855-55:
(8*1)+(7*5)+(6*5)+(5*8)+(4*5)+(3*5)+(2*5)+(1*5)=163
163 % 10 = 3
So 155855-55-3 is a valid CAS Registry Number.

155855-55-3Relevant articles and documents

An improved approach to chiral cyclopentenone building blocks. Total synthesis of pentenomycin I and neplanocin A

Gallos, John K.,Stathakis, Christos I.,Kotoulas, Stefanos S.,Koumbis, Alexandros E.

, p. 6884 - 6890 (2007/10/03)

An improved approach to enantiomerically pure hydroxylated cyclopentenones is reported here, which involves intramolecular nitrone cycloaddition of sugar-derived chiral pent-4-enals and hex-5-en-ones-2 followed by N-O bond cleavage, quaternization of the amine thus produced, and finally oxidative elimination of the amino group. Synthesis of pentenomycin I and neplanocin A is described following this methodology.

Expeditoious Synthesis of Aminocyclopentitols from D-Ribose via Intramolecular Nitrone Cycloaddition

Gallos, John K.,Goga, Efthymia G.,Koumbis, Alexandros E.

, p. 613 - 614 (2007/10/02)

The synthesis of 4α-aminocyclopentane-1α,2β,3β-triol (a key-intermediate in the preparation of carbocyclic nucleosides) and its N-substituted derivatives, has been achieved by the intarmolecular nitrone cycloadditions of a γ-unsaturated aldehyde, easily accessible from D-ribose, followed by reductive N-O bond cleavage in the resulting bicyclic oxazanes.

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