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80516-07-0

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80516-07-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 80516-07-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,0,5,1 and 6 respectively; the second part has 2 digits, 0 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 80516-07:
(7*8)+(6*0)+(5*5)+(4*1)+(3*6)+(2*0)+(1*7)=110
110 % 10 = 0
So 80516-07-0 is a valid CAS Registry Number.

80516-07-0Downstream Products

80516-07-0Relevant articles and documents

Alkaloid Synthesis via Intramolecular Ene Reaction. 2. Application to dl-Mesembrine and dl-Dihydromaritidine

Keck, Gary E.,Webb, Robert R.

, p. 1302 - 1309 (2007/10/02)

The total syntheses of mesembrine (2) and dihydromaritidine (3), alkaloids of the genera Sceletium and Amaryllis (respectively), are decscribed.The key strategy in each case involves the intramolecular ene cyclization of an appropriately constructed acylnitroso olefin, giving cyclic hydroxamic acid ("ene product") 12.Reduction of the hydroxamic acid to the lactam 4 is followed by N-methylation and hydroxylation at position C-6 via bromohydrin 15, introducing the oxygen functionality present in 2.Removal of bromine, oxidation of the alcohol to the keto lactam 13, andreductive removal of the lactam carbonyl gave racemic mesembrine.Removal of bromine from bromohydrin 20, obtained from lactam 4, followed by reduction with lithium aluminum hydride and Pictet-Spengler cyclization gave dihydromaritidine (3).

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