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Benzoic acid (2S,3R,4R,5S)-4,5-bis-allyloxy-2-[(2S,3S,4S,5R,6R)-4-benzyloxy-3-methoxy-5-(4-methoxy-benzyloxy)-6-methoxymethyl-tetrahydro-pyran-2-yloxy]-tetrahydro-pyran-3-yl ester is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

256342-25-3

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256342-25-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 256342-25-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,5,6,3,4 and 2 respectively; the second part has 2 digits, 2 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 256342-25:
(8*2)+(7*5)+(6*6)+(5*3)+(4*4)+(3*2)+(2*2)+(1*5)=133
133 % 10 = 3
So 256342-25-3 is a valid CAS Registry Number.

256342-25-3Downstream Products

256342-25-3Relevant academic research and scientific papers

Total synthesis of everninomicin 13,384-1 - Part 2: Synthesis of the FGHA2 fragment

Nicolaou,Mitchell, Helen J.,Fylaktakidou, Konstantina C.,Rodriguez, Rosa Maria,Suzuki, Hideo

, p. 3116 - 3148 (2007/10/03)

The stereoselective synthesis of everninomicin's 13,384-1 (1) FGHA2 fragment (2) in a suitable form for incorporation into the final target (1) is described. The construction of the FG 1,1′-disaccharide linkage relied on a new method based on tin-acetal chemistry, while for the GH orthoester bridge, a number of approaches were explored. Final success for the latter construction came when a novel 1,2-phenylseleno migration reaction was applied to couple rings G and H, followed by ketene acetal and orthoester formation.

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