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391277-76-2

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391277-76-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 391277-76-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,9,1,2,7 and 7 respectively; the second part has 2 digits, 7 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 391277-76:
(8*3)+(7*9)+(6*1)+(5*2)+(4*7)+(3*7)+(2*7)+(1*6)=172
172 % 10 = 2
So 391277-76-2 is a valid CAS Registry Number.

391277-76-2Downstream Products

391277-76-2Relevant articles and documents

Enantioselective synthesis of the antiinflammatory agent (-)-acanthoic acid

Ling,Chowdhury,Kramer,Vong,Palladino,Theodorakis

, p. 8843 - 8853 (2001)

An enantioselective synthesis of the potent antiinflammatory agent (-)-acanthoic acid (1) is described. The successful strategy departs from (-)-Wieland-Miescher ketone (10), which is readily available in both enantiomeric forms and constitutes the starting point toward a fully functionalized AB ring system of 1. Conditions were developed for a regioselective double alkylation at the C4 center of the A ring, which produced compound 32 as a single stereoisomer. Construction of the C ring of 1 was accomplished via a Diels-Alder reaction between sulfur-containing diene 43 and methacrolein (36), which after desulfurization and further functionalization yielded synthetic acanthoic acid. The described synthesis confirms the proposed stereochemistry of the natural product and represents a fully stereocontrolled entry into an underexplored class of biologically active diterpenes.

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