133602-07-0Relevant academic research and scientific papers
Total synthesis of C31-methyl ketone apocarotenoids. Part 4. First total synthesis of (3S,5R,6R)-paracentrone
Haugan, Jarle Andre
, p. 2731 - 2737 (2007/10/03)
Optically active (all-E)-(3S,5R,6R)-paracentrone has been prepared by total synthesis for the first time, in 3% overall yield over 13 linear steps from the readily available (4R,6R)-actinol, (2E)-3-methylpent-2-en-4-yn-1-ol, (all-E)-2,7-dimethylocta-2,4,6
First total synthesis of (all-E)-(3S, 5R, 6R)-Paracentrone
Haugan, Jarle Andre
, p. 3887 - 3890 (2007/10/03)
(all-E)-(3S,5R,6R)-Paracentrone was synthesised in the optically active form in five steps in 52% overall yield from the available (2-E)-(4R)-((2R,4S)-2,4-dihydroxy-2,6,6-trimethylcyclohexylidene)-3-methyl-2,4- pentadien-1-ol, (all-E)-(7-formyl-2-methyl-2
CAROTENOID METABOLISM AND THE BIOSYNTHESIS OF ABSCISIC ACID
Parry, Andrew D.,Horgan, Roger
, p. 815 - 821 (2007/10/02)
The conversion of all-trans-violaxanthin to 9'-cis-neoxanthin was shown to occur in fluridone-treated etiolated Lycopersicon and Phaseolus seedlings, following exposure to light.The results of deuterium oxide labelling experiments supported this precursor/product relationship, and provided further evidence for the origin of abscisic acid.Several apo-carotenoids, putative by-products of abscisic acid biosynthesis, were synthesised by chemical oxidation but were not detected in plant extracts.In vitro, lipoxygenase cleaved neoxanthin and violaxanthin down to small (/=C13) fragments.It may be that in vivo any apo-carotenoids formed by the specific cleavage of 9'-cis-neoxanthin, during abscisic acid biosynthesis, are rapidly metabolized by lipoxygenase or similar enzymes.
