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128461-65-4

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128461-65-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 128461-65-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,8,4,6 and 1 respectively; the second part has 2 digits, 6 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 128461-65:
(8*1)+(7*2)+(6*8)+(5*4)+(4*6)+(3*1)+(2*6)+(1*5)=134
134 % 10 = 4
So 128461-65-4 is a valid CAS Registry Number.

128461-65-4Relevant articles and documents

Synthesis of tetrahydrofurans from protected β-hydroxyaldehydes: Optimization of the alcohol protecting group

Angle, Steven R.,Bernier, Daniel S.,El-Said, Nahla A.,Jones, Darin E.,Shaw, Stephanie Z.

, p. 3919 - 3922 (1998)

As part of an effort to generalize the synthesis of substituted tetrahydrofurans from protected β-hydroxy aldehydes, a series of common alcohol protecting groups was screened for compatibility with the methodology. Employing a β-(triisopropylsilyloxy)alde

Stereoselective synthesis of (-)-pinidinone

Shankaraiah, Gundeti,Vijaya Kumar, Tiruvayamudi,Venkateswara Reddy, Guvvala,Madhusudana Rao, Janaswamy,Suresh Babu, Katragadda

, p. 990 - 996 (2013)

A simple and efficient stereoselective linear approach to the total synthesis of (-)-pinidinone has been accomplished starting from propane-1,3-diol, and employing Maruoka asymmetric allylation and Grubbs' olefin cross-metathesis as the key steps. Copyright

Modular Total Synthesis of iso-Archazolids and Archazologs

Scheeff, Stephan,Rivière, Solenne,Ruiz, Johal,Dedenbach, Simon,Menche, Dirk

, p. 10190 - 10223 (2021/08/16)

Full details on the design, development, and successful implementation of suitable synthetic strategies directed toward the total synthesis of iso-archazolids and archazologs are reported. Both a biomimetic and a multistep total synthesis of iso-archazolid B, the most potent and least abundant archazolid, are described. The bioinspired conversion from archazolid B was realized by a high-yielding 1,8-Diazabicyclo[5.4.0]undec-7-ene catalyzed one-step double-bond shift. A highly stereoselective total synthesis was accomplished in 25 steps, involving a sequence of highly stereoselective aldol reactions, an efficient aldol condensation to forge two elaborate fragments, and a challenging ring-closing metathesis macrocyclization with an unusual Stewart-Grubbs catalyst. These strategies proved to be generally useful and could be successfully implemented for the preparation of three novel iso-archazolids as well as five novel archazologs, lacking the thiazole side chain. A wide variety of further archazolids and archazologs may now be targeted for exploration of the promising anticancer potential of these polyketide macrolides.

BIOCATALYTIC SYNTHESIS OF CRYPTOPHYCIN ANTICANCER AGENTS

-

, (2021/04/02)

The disclosure provides cryptophycin intermediates, cryptophycin analogs, and cryptophycin chimeric molecules useful in treating cancer, as well as methods of producing these compounds and methods of treating cancer.

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