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1451192-92-9

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1451192-92-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1451192-92-9 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,4,5,1,1,9 and 2 respectively; the second part has 2 digits, 9 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 1451192-92:
(9*1)+(8*4)+(7*5)+(6*1)+(5*1)+(4*9)+(3*2)+(2*9)+(1*2)=149
149 % 10 = 9
So 1451192-92-9 is a valid CAS Registry Number.

1451192-92-9Relevant articles and documents

Domino Michael/Mannich/ N-alkylation route to the tetrahydrocarbazole framework of Aspidosperma alkaloids: Concise total syntheses of (-)-aspidospermidine, (-)-tabersonine, and (-)-vincadifformine

Zhao, Senzhi,Andrade, Rodrigo B.

, p. 13334 - 13337 (2013)

We report a novel, asymmetric domino Michael/Mannich/N-alkylation sequence for the rapid assembly of the tetrahydrocarbazole framework of Aspidosperma alkaloids. This method was utilized in the concise total syntheses of classical targets (-)-aspidospermidine, (-)-tabersonine, and (-)-vincadifformine in 10 or 11 steps. Additional key steps include ring-closing metathesis to prepare the D-ring and Bosch-Rubiralta spirocyclization to prepare the C-ring.

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