6399-46-8

Upstream product

• 432-68-8 echinenone 
• 58720-45-9 15,15'-didehydro-β,β-caroten-4-one 
• 58720-69-7 3-Hydroxy-2,3,15,15'-tetrahydro-β,β-caroten-4-on 
• 209615-09-8 2,2'-(1,6-Dimethyl-1,3,5-hexatrienylen)bis(5,5-dimethyl-1,3-dioxan) 
• 53282-28-3 [(2E,4E)-3-methyl-5-(2,6,6-trimethylcyclohex-1-en-1-yl)penta-2,4-dienyl]triphenylphosphonium chloride 
• 5056-17-7 (2E,4E,6E)-2,7-dimethyl-2,4,6-octatrienedial 

Downstream Products

• 58720-56-2 3,4'-Dihydroxy-2,3-didehydro-β,β-caroten-4-on 
• 62335-47-1 2-Nor-β,β-carotin-3,4-dion 
• 58720-52-8 5,5,7-trimethyl-6-[(all-E)-3,7,12,16-tetramethyl-18-(2,6,6-trimethyl-cyclohex-1-enyl)-octadeca-1,3,5,7,9,11,13,15,17-nonaenyl]-4,5-dihydro-benzo[1,2,5]oxadiazole 

Relevant academic research and scientific papers

Synthese von optisch aktiven, natuerlichen Carotinoiden und strukturell verwandten Naturprodukten. IX. Synthese von (3R)-Hydroxyechinenon, (3R,3'R)- und (3R,3'S)-Adonixanthin, (3R)-Adonirubin, deren optischen Antipoden und verwandten Verbindungen

The synthesis of racemic and optically active hydroxyechinenone (12-14), adonixanthin (16-19), adonirubin (22-24), meso-astaxanthin (26) and their corresponding diosphenols (15, 20, 21, 25, 27, 28, and 29) by Wittig reaction is reported, starting from suitable C15-phosphonium salts and C10-aldehydes.