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849480-05-3

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849480-05-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 849480-05-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,4,9,4,8 and 0 respectively; the second part has 2 digits, 0 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 849480-05:
(8*8)+(7*4)+(6*9)+(5*4)+(4*8)+(3*0)+(2*0)+(1*5)=203
203 % 10 = 3
So 849480-05-3 is a valid CAS Registry Number.

849480-05-3Downstream Products

849480-05-3Relevant articles and documents

Stereospecific synthesis of 2,2,3-trisubstituted tetrahydroquinolines: Application to the total syntheses of benzastatin E and natural virantmycin

Ori, Mayuko,Toda, Narihiro,Takami, Kazuko,Tago, Keiko,Kogen, Hiroshi

, p. 2075 - 2104 (2005)

An efficient methodology for the synthesis of 2,2,3-trisubstituted tetrahydroquinolines has been developed, which involves the triphenylphosphine- CCl4-mediated stereospecific rearrangement of α,α- disubstituted indoline-2-methanols 15 to 2,2,3-trisubstituted tetrahydroquinolines 26. The rearrangement precursors 15 are readily prepared by the diastereoselective Grignard addition to 2-acylindolines 13. The total syntheses of (+)-benzastatin E (1) and natural virantmycin (2a) were accomplished utilizing this methodology. This rearrangement reaction might afford some chemical precedent for the biogenetic pathway of the benzastatin family.

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