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69560-46-9

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69560-46-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 69560-46-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,9,5,6 and 0 respectively; the second part has 2 digits, 4 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 69560-46:
(7*6)+(6*9)+(5*5)+(4*6)+(3*0)+(2*4)+(1*6)=159
159 % 10 = 9
So 69560-46-9 is a valid CAS Registry Number.

69560-46-9Relevant articles and documents

Conversion of the Naturally Occurring Amide Alkaloids into O5 Benzophenanthridinium Alkaloids. A New Synthetic Sequence to Antitumour Benzophenanthridine Alkaloids

Ishii, Hisashi,Ishikawa, Tsutomu,Watanabe, Toshiko,Ichikawa, Yuh-Ichiro,Kawanabe, Eri

, p. 2283 - 2290 (2007/10/02)

Cyclisation of methyl integriamide (17a) and methyl isoarnottianamide (17b) by the Bischler-Napieralski reaction gave the naturally occurring O5 benzophenanthridine alkaloids, chelirubine (5a), and chelilutine (5b), respectively; this was extended to give a generally applicable, versatile synthesis of benzophenanthridine alkaloids from 2-aryl-3,4-dihydronaphthalen-1(2H)-ones (13).Treatment of the tetralones (13) with methylamine and titanium tetrachloride followed by sodium borohydride provided the cis-2-aryl-N-methyl-1,2,3,4-tetrahydro-1-naphthylamines (14) which were converted into the N-formyl derivatives (15) with freshly prepared chloral in good yields.Dehydrogenation of the resulting formamides (15) with 2,3-dichloro-5,6-dicyano-1,4-benzoquinone (DDQ) gave the fully aromatised amines corresponding to methyl integriamide (17a).Bischler-Napieralski reaction of these amides (17) furnished the desired quaternary benzophenanthridine alkaloids (5).

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