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174320-11-7

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174320-11-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 174320-11-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,4,3,2 and 0 respectively; the second part has 2 digits, 1 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 174320-11:
(8*1)+(7*7)+(6*4)+(5*3)+(4*2)+(3*0)+(2*1)+(1*1)=107
107 % 10 = 7
So 174320-11-7 is a valid CAS Registry Number.

174320-11-7Relevant articles and documents

Lithium and proton templated ω-polyazamacrolactamization, new general routes to macrocyclic polyamines

Drandarov, Konstantin,Hesse, Manfred

, p. 7213 - 7216 (2007/10/03)

A general, lithium templated/catalyzed ω-polyazamacrolactamization method for the synthesis of macrocyclic polyamines including spermidine and spermine alkaloids is presented. The formation of 12-, 13-, 16-, 17-, and 19-membered N3, N4, N5, and N6 containing rings is described. A proton templated/catalyzed macrolactamization of some ω-polyazaaminoesters is also observed.

Metal-Templated Macrolactamization of Triamino and Tetramino Esters. Facile Synthesis of Macrocyclic Spermidine and Spermine Alkaloids, (S)-(+)-Dihydroperiphylline, (±)-Buchnerine, (±)-Verbacine, (±)-Verbaskine, and (±)-Verbascenine

Kuroki, Yoshichika,Ishihara, Kazuaki,Hanaki, Naoyuki,Ohara, Suguru,Yamamoto, Hisashi

, p. 1221 - 1230 (2007/10/03)

The total synthesis of spermidine and spermine alkaloids. (S)-(+)-dihydroperiphylline (1), (±)-buchnerine (2), (±)-verbacine (3), (±)-verbaskine (4), and (±)-verbascenine (5), is described. The construction of macrocyclic lactams has been efficiently accomplished by the metal-templated cyclization of triamino esters and tetraamino esters. It was also found that the antimony(III) ethoxide is useful as an intermolecular amidation catalyst.

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