54783-71-0

Upstream product

• 5056-17-7 (2E,4E,6E)-2,7-dimethyl-2,4,6-octatrienedial 
• 108376-60-9 Benzoesaeure-<4-<(1'R)-2',2',4-trimethyl-3'-(3-oxo-1-butenyl)-3'-cyclohexenyl>-2-methyl-3-butenyl>ester 
• 141-10-6 pseudoionone 
• 99647-33-3 3-methyl 5-<2,6,6-trimetyl 5-(4-hydroxy 3-methyl 2E-butenyl) 2-cyclohexenyl> 1,4-pentadien 3-ol (2-hydroxyprenyl vinyl β-ionol) 
• 1838-94-4 isoprene epoxide 
• 99647-25-3 4-<2,6,6-trimethyl 5-(4-hydroxy 3-methyl 2E-butenyl) 1-cyclohexenyl> 3E-buten 2-one (2-hydroxyprenyl β-ionone) 
• 108361-22-4 (3R)-3-oxo-2,2,4-trimethylcyclohexan-1-acetaldehyde 
• 108361-17-7 (R)-2,2,4-trimethyl-3-cyclohexen-1-acetonitrile 
• 108361-18-8 (R)-2,2,4-trimethyl-3-cyclohexen-1-acetaldehyde 
• 108361-19-9 2-<<(R)-2',2',4'-trimethyl-3'-cyclohexenyl>methyl>-1,3-dioxolane 
• 108361-29-1 2-Methyl-4-((1'R)-2',2',4'-trimethyl-3'-oxocyclohexyl)-2-butensaeure-ethylester 
• 108361-21-3 (3R)-3-<(1',3'-dioxolan-2'-yl)methyl>-2,2,6-trimethylcyclohexanone 
• 108361-32-6 (3R)-3-(4'-hydroxy-3'-methyl-2'-butenyl)-2,2,6-trimethylcyclohexanone 

Relevant academic research and scientific papers

C45- and C50-Carotenoids: Synthesis of Optically Active Cyclic C20-Building Blocks and of (2R,2'R)-2,2'-Bis(4-hydroxy-3-methyl-2-butenyl)-β,β-carotene ( =C.p. 450)

The synthesis of the optically active C20-building blocks (R)-26 and (R)-39 and of the optically active cyclic C50-carotenoid C.p. 450 (3) starting from (-)-β-pinene is reported.

BIOMIMETIC SYNTHESIS OF BACTERIAL C50 CAROTENOIDS DECAPRENOXANTHIN AND C.p. 450

Alkylation of the distal double bond of pseudoionone 4 has been carried out with isoprene epoxide (ZnCl2/MeNO2) leading directly to α-cis 10a, α-trans 10b and γ 10c hydroxyprenylionones.The α-cis and γ-isomers have been converted in few steps into the C50 carotenoids decaprenoxanthin 1 and C.p. 450 3 respectively.