95404-19-6

Upstream product

• 95343-56-9 Acetic acid (1R,4S,5R)-4-[(3Z,5E,7E,9E,11E,13E,15Z)-18-((1S,4R,6R)-4-acetoxy-1-hydroxy-2,2,6-trimethyl-cyclohexyl)-3,7,12,16-tetramethyl-octadeca-3,5,7,9,11,13,15-heptaene-1,17-diynyl]-4-hydroxy-3,3,5-trimethyl-cyclohexyl ester 
• 5056-17-7 (2E,4E,6E)-2,7-dimethyl-2,4,6-octatrienedial 
• 95307-31-6 2-cis-5-(4',4'-ethylenedioxy-1'-hydroxy-2',2',6'-trimethylcyclohexyl)-3-methylpent-2-en-4-yn-1-ol 
• 49846-56-2 2-cis-5-(1'-hydroxy-2',2',6'-trimethyl-4'-oxocyclohexyl)-3-methylpent-2-en-4-yn-1-ol 
• 95343-54-7 9-cis-3,6-dihydroxy-7,8-didehydro-5,6-dihydro-12'-apo-β-caroten-12'-al 
• 95343-55-8 9-cis-9'-cis-7,8,7',8'-tetradehydro-5,6,5',6'-tetrahydro-β,β-carotene-3,6,3',6'-tetraol 
• 95307-35-0 [(Z)-5-((1S,4R,6R)-1,4-Dihydroxy-2,2,6-trimethyl-cyclohexyl)-3-methyl-pent-2-en-4-ynyl]-triphenyl-phosphonium; bromide 
• 26533-75-5 2-cis-5-(1',4'-dihydroxy-2',2',6'-trimethylcyclohexyl)-3-methylpent-2-en-4-yn-1-ol 
• 26533-74-4 2-cis-1-acetoxy-5-(1'-hydroxy-2',2',6'-trimethyl-4'-oxocyclohexyl)-3-methylpent-2-en-4-yne 
• 76530-42-2 (R)-4-ethynyl-3,5,5-trimethylcyclohex-3-enyl acetate 
• 84695-32-9 dimethyl (2E,4E,6E)-2,7-dimethylocta-2,4,6-triene-1,8-dioate 
• 122057-55-0 2-methyl-2,4-pentadienoic acid methyl ester 
• 113951-62-5 (2E,4E,6E)-2,6-dimethylocta-2,4,6-triene-1,8-diol 
• 20548-02-1 (4R,6R)-4-hydroxy-2,2,6-trimethylcyclohexan-1-one 

Downstream Products

• 26666-93-3 (3R',3'R)-alloxanthin 

Relevant academic research and scientific papers

Synthesis of labile all-trans-7,8,7′,8′-bis-acetylenic carotenoids by bi-directional Horner-Wadsworth-Emmons condensation

A new stereoselective synthesis of the C40-bis-acetylenic carotenoids all-trans-(3R,3′R)-alloxanthin and all-trans-3,4,7,8,3′,4′,7′,8′-octadehydro-β,β-carotene, both compounds featuring a stereochemically labile C7-C10 enyne, based on a bi-directional Horner-Wadsworth-Emmons (HWE) reaction of a C15-phosphonate and a central C10-dialdehyde, is reported. The triene unit of the latter fragment was synthesized using the acyclic metathesis/dimerization reaction.

Carotenoids and Related Compounds. Part 38. Synthesis of (3RS,3'RS)-Alloxanthin and Other Acetylenes

The all-trans, 9-cis, and 9,9'-di-cis forms of (3RS,3'RS)-alloxanthin have been synthesized, also the 9-cis-isomer of (3RS,6'RS)-crocoxanthin.Perhydrogenation of alloxanthin gives a product with the same optical properties as perhydrozeaxanthin.These resu