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68069-80-7

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68069-80-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 68069-80-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,8,0,6 and 9 respectively; the second part has 2 digits, 8 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 68069-80:
(7*6)+(6*8)+(5*0)+(4*6)+(3*9)+(2*8)+(1*0)=157
157 % 10 = 7
So 68069-80-7 is a valid CAS Registry Number.

68069-80-7Relevant articles and documents

Modular Total Synthesis and Cell-Based Anticancer Activity Evaluation of Ouabagenin and Other Cardiotonic Steroids with Varying Degrees of Oxygenation

Khatri, Hem Raj,Bhattarai, Bijay,Kaplan, Will,Li, Zhongzheng,Curtis Long, Marcus John,Aye, Yimon,Nagorny, Pavel

supporting information, p. 4849 - 4860 (2019/03/26)

A Cu(II)-catalyzed diastereoselective Michael/aldol cascade approach is used to accomplish concise total syntheses of cardiotonic steroids with varying degrees of oxygenation including cardenolides ouabagenin, sarmentologenin, 19-hydroxysarmentogenin, and 5-epi-panogenin. These syntheses enabled the subsequent structure activity relationship (SAR) studies on 37 synthetic and natural steroids to elucidate the effect of oxygenation, stereochemistry, C3-glycosylation, and C17-heterocyclic ring. Based on this parallel evaluation of synthetic and natural steroids and their derivatives, glycosylated steroids cannogenol-l-α-rhamnoside (79a), strophanthidol-l-α-rhamnoside (92), and digitoxigenin-l-α-rhamnoside (97) were identified as the most potent steroids demonstrating broad anticancer activity at 10-100 nM concentrations and selectivity (nontoxic at 3 μM against NIH-3T3, MEF, and developing fish embryos). Further analyses indicate that these molecules show a general mode of anticancer activity involving DNA-damage upregulation that subsequently induces apoptosis.

Synthesis of Deoxyglycosides by Desulfurization under UV Light

Ge, Jian-Tao,Li, Ying-Ying,Tian, Jun,Liao, Rong-Zhen,Dong, Hai

, p. 7008 - 7014 (2017/07/15)

This study was performed to develop a highly efficient method whereby desulfurization could be completed in 0.5 h under ultraviolet light, at room temperature, and in the presence of trialkylphosphine. Using this method, deoxyglycosides could be produced from sulfur-containing glycosides in almost quantitative yields. The much higher reactivity of desulfurization with triethylphosphine versus that with triethylphosphite is also discussed.

Catalytic and regioselective oxidation of carbohydrates to synthesize keto-sugars under mild conditions

Muramatsu, Wataru

, p. 4846 - 4849 (2015/04/27)

A new catalytic and regioselective approach for the synthesis of keto-sugars is described. An organotin catalyst, Oc2SnCl2, in the presence of trimethylphenylammonium tribromide ([TMPhA]+Br3-) accelerates the regioselective oxidation at the axial -OH group of 1,2-diol moieties in galactopyranosides. The reaction conditions can also be used for the regioselective oxidation of various carbohydrates.

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