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18331-31-2

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18331-31-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 18331-31-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,8,3,3 and 1 respectively; the second part has 2 digits, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 18331-31:
(7*1)+(6*8)+(5*3)+(4*3)+(3*1)+(2*3)+(1*1)=92
92 % 10 = 2
So 18331-31-2 is a valid CAS Registry Number.

18331-31-2Downstream Products

18331-31-2Relevant articles and documents

Redox divergent synthesis of fawcettimine-type lycopodium alkaloids

Zaimoku, Hisaaki,Taniguchi, Tsuyoshi

, p. 9613 - 9619 (2014)

A new approach for synthesis of fawcettimine-type Lycopodium alkaloids is described. A divergent strategy was achieved by applying stereoselective Diels-Alder reaction followed by redox-controlled elaboration. Eventually, (-)-8-deoxyserratinine, (+)-fawcettimine, (-)-lycopoclavamine-A, (-)-serratine, (-)-lycopoclavamine-B and (-)-serratanidine were successfully accessed. A class reunion: The divergent synthesis of fawcettimine-type Lycopodium alkaloids is reported. The present synthetic study features stereoselective Diels-Alder reactions to construct carbon cores of alkaloids. Subsequently, (-)-8-deoxyserratinine, (+)-fawcettimine, (-)-lycopoclavamine-A, (-)-serratine, (-)-lycopoclavamine-B and (-)-serratanidine were synthesized from the common synthetic intermediate via stereoselective reduction or oxygenation.

Divergent and efficient syntheses of the Lycopodium alkaloids (-)-Lycojaponicumin C, (-)-8-deoxyserratinine, (+)-fawcettimine, and (+)-fawcettidine

Hou, Si-Hua,Tu, Yong-Qiang,Liu, Lin,Zhang, Fu-Min,Wang, Shao-Hua,Zhang, Xiao-Ming

, p. 11373 - 11376 (2013/11/06)

Four from one: The four title alkaloids (structures shown in blue box) have been synthesized by using a common versatile intermediate with a 6/5/5 tricyclic skeleton. This tricyclic intermediate could be easily assembled by using an intramolecular carbene addition/cyclization and a Dieckmann condensation/Tsuji-Trost allylation as key steps. Copyright

Total syntheses of lycopodium alkaloids (+)-fawcettimine, (+)-fawcettidine, and (-)-8-deoxyserratinine

Li, Houhua,Wang, Xiaoming,Lei, Xiaoguang

, p. 491 - 495 (2012/02/16)

A shared story: Three fawcettimine- and serratinine-type Lycopodium alkaloids are prepared from a common tetracyclic spirodiketone intermediate in concise total syntheses (see scheme). The intermediate was constructed by a remarkable biosynthesis-inspired

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