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74726-77-5

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74726-77-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 74726-77-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,4,7,2 and 6 respectively; the second part has 2 digits, 7 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 74726-77:
(7*7)+(6*4)+(5*7)+(4*2)+(3*6)+(2*7)+(1*7)=155
155 % 10 = 5
So 74726-77-5 is a valid CAS Registry Number.

74726-77-5Relevant articles and documents

Symmetry-based approach to oligostilbenoids: Rapid entry to viniferifuran, shoreaphenol, malibatol A, and diptoindonesin G

Jung, Youngeun,Singh, Dileep Kumar,Kim, Ikyon

, p. 2689 - 2693 (2016)

The recognition of the local symmetric image within benzofuran-based natural oligostilbenoids guided us to design a modular synthetic approach to these molecules by utilizing a three-step sequence consisting of Sonogashira coupling, iodocyclization, and S

Synthesis and SAR of 4-methyl-5-pentylbenzene-1,3-diol (MPBD), produced by Dictyostelium discoideum

Murata, Chihiro,Ogura, Tetsuhiro,Narita, Shuhei,Kondo, Anna P.,Iwasaki, Natsumi,Saito, Tamao,Usuki, Toyonobu

, p. 1428 - 1433 (2016/02/19)

4-Methyl-5-pentylbenzene-1,3-diol (MPBD) is a secondary metabolite of SteelyA polyketide synthase, which controls cell aggregation and spore maturation of Dictyostelium discoideum. In this study, chemical synthesis of MPBD and its derivatives was achieved. Structure-activity relationship (SAR) studies for antimicrobial activities against Escherichia coli and Bacillus subtilis were also conducted.

Total synthesis of (+)-papulacandin D

Denmark, Scott E.,Kobayashi, Tetsuya,Regens, Christopher S.

supporting information; experimental part, p. 4745 - 4759 (2010/08/06)

A total synthesis of (+)-papulacandin D has been achieved in 31 steps, in a 9.2% overall yield from commercially available materials. The synthetic strategy divided the molecule into two nearly equal sized subunits, the spirocyclic C-arylglycopyranoside and the polyunsaturated fatty acid side-chain. The C-arylglycopyranoside was prepared in 11 steps in a 30% overall yield from triacetoxyglucal. The fatty acid side-chain was also prepared in 11 steps in a 30% overall yield from geraniol. The key strategic transformations in the synthesis are: (1) a palladium-catalyzed, organosilanolate-based cross-coupling reaction of a dimethylglucal-silanol with an electron-rich and sterically hindered aromatic iodide and (2) a Lewis-base catalyzed, enantioselective allylation reaction of a dienal and allyltrichlorosilane. A critical element in the successful execution of the synthesis was the development of a suitable protecting group strategy that satisfied a number of stringent criteria.

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