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134523-61-8

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  • (1S,4S,E)-4-((1R,3aS,7aR,E)-4-((E)-2-((3S,5R)-3,5-bis(tert-butyldiMethylsilyloxy)-2-Methylenecyclohexylidene)ethylidene)-7a-Methyloctahydro-1H-inden-1-yl)-1-cyclopropylpent-2-en-1-ol

    Cas No: 134523-61-8

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134523-61-8 Usage

General Description

The chemical "(1S,4S,E)-4-((1R,3aS,7aR,E)-4-((E)-2-((3S,5R)-3,5-bis(tert-butyldiMethylsilyloxy)-2-Methylenecyclohexylidene)ethylidene)-7a-Methyloctahydro-1H-inden-1-yl)-1-cyclopropylpent-2-en-1-ol" is a complex organic compound with a cyclopropane ring and multiple double bonds. It contains several stereocenters and functional groups such as hydroxyl and cyclopropyl. The compound has a long and intricate structure with various substituents, including tert-butyldimethylsilyloxy and methylene groups. It is a highly specialized and specific chemical compound that may have potential applications in organic chemistry, pharmaceuticals, or materials science.

Check Digit Verification of cas no

The CAS Registry Mumber 134523-61-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,4,5,2 and 3 respectively; the second part has 2 digits, 6 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 134523-61:
(8*1)+(7*3)+(6*4)+(5*5)+(4*2)+(3*3)+(2*6)+(1*1)=108
108 % 10 = 8
So 134523-61-8 is a valid CAS Registry Number.

134523-61-8Relevant articles and documents

Stereoselective synthesis of C24-hydroxylated vitamin D3 analogs: A practical and expeditius route to calcipotriol

Rumbo, Antonio,Perez-Garcia, Xenxo,Mourino, Antonio

scheme or table, p. 68 - 70 (2011/11/14)

The synthesis of the clinically important drug calcipotriol (2, MC903) is described as an example of a new and efficient approach to C24-hydroxylated analogs and metabolites of vitamin D3 (1). The key step of the process is the generation of the C24 stereocenter by DAIB [(-)-3-exo-(dimethylamino)isoborneol]-catalyzed addition of the alkenylzinc derivative of alkyne 3 to cyclopropylcarboxaldehyde.

ISOMERISATION OF PHARMACEUTICAL INTERMEDIATES

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Page/Page column 20, (2008/06/13)

The present invention relates to an isomerisation method of vitamin D analogues, such as compounds useful for the synthesis of calcipotriol, and to and to the use of a flow- through photoreactor or continuous flow photoreactor reactor for making said vitamin D analogues. The present invention relates further to the use of intermediates produced with said method for making calcipotriol or calcipotriol monohydrate, or pharmaceutical formulations thereof.

STEREOSELECTIVE SYNTHESIS OF VITAMIN D ANALOGUES

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Page/Page column 29-30, (2008/06/13)

The present invention relates to intermediates useful for the synthesis of calcipotriol or calcipotriol monohydrate, to methods of producing said intermediates, and to methods of stereoselectively reducing said intermediates.

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