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170649-28-2

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170649-28-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 170649-28-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,0,6,4 and 9 respectively; the second part has 2 digits, 2 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 170649-28:
(8*1)+(7*7)+(6*0)+(5*6)+(4*4)+(3*9)+(2*2)+(1*8)=142
142 % 10 = 2
So 170649-28-2 is a valid CAS Registry Number.

170649-28-2Relevant articles and documents

Total synthesis of virgatolide B

Hume, Paul A.,Furkert, Daniel P.,Brimble, Margaret A.

supporting information, p. 4588 - 4591 (2013/09/24)

The first total synthesis of the benzannulated spiroketal virgatolide A is presented. Key features include sp3-sp2 Suzuki coupling of an enantiomerically enriched β-trifluoroboratoamide and an aryl bromide, regioselective intramolecular carboalkoxylation, and a 1,3-anti-selective Mukaiyama aldol reaction followed by global deprotection/cyclization with regioselectivity governed by internal hydrogen bonding.

Asymmetric synthesis of (+)-chloriolide

Das, Tapas,Jana, Nandan,Nanda, Samik

scheme or table, p. 2644 - 2647 (2010/06/16)

An asymmetric synthesis of 12-membered ring macrolide, chloriolide has been accomplished by adopting a linear strategy. Lipase-catalyzed enzymatic kinetic resolution (EKR), asymmetric alkynylation using Trost pro-phenol catalyst followed by Yamaguchi macr

Natural product-guided synthesis of a spiroacetal collection reveals modulators of tubulin cytoskeleton integrity

Barun, Okram,Kumar, Kamal,Sommer, Stefan,Langerak, Anette,Mayer, Thomas U.,Mueller, Oliver,Waldmann, Herbert

, p. 4773 - 4788 (2007/10/03)

The spiro[5.5]ketal moiety forms the underlying structural skeleton of numerous biologically active natural products. Since simplified but characteristic spiroketals derived from the parent natural products retain biological activity, the spiro[5.5]ketal

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