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187277-52-7

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187277-52-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 187277-52-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,7,2,7 and 7 respectively; the second part has 2 digits, 5 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 187277-52:
(8*1)+(7*8)+(6*7)+(5*2)+(4*7)+(3*7)+(2*5)+(1*2)=177
177 % 10 = 7
So 187277-52-7 is a valid CAS Registry Number.

187277-52-7Upstream product

187277-52-7Relevant articles and documents

Chiral and stereoselective total synthesis of (-)-mesembranol starting from D-glucose

Chida, Noritaka,Sugihara, Kohji,Amano, Seiji,Ogawa, Seiichiro

, p. 275 - 280 (1997)

A chiral synthesis of the Sceletium alkaloid (-)-mesembranol 1 is described. The cyclohexane ring in 1 is prepared in an optically active form from D-glucose using Ferrier's carbocyclisation, and the critical stereochemistry of the quaternary carbon in 1 is constructed stereoselectively via chirality transfer by way of Claisen rearrangement of the cyclohexenol derivative 14a. The perhydroindole skeleton in 1 is effectively generated by intramolecular aminomercuriation of the amino-olefin 18.

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