- Measurement of xanthoxin in higher plant tissues using 13c labelled internal standards
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A new procedure for the reliable measurement of xanthoxin from plant tissues has been developed. This accounts for both its breakdown and its isomerization to 2-trans-xanthoxin, and relies on the use of 12C-labelled internal standards, HPLC pur
- Parry, Andrew D.,Neill, Steven J.,Horgan, Roger
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Read Online
- Carotenoids and related polyenes. Part 5. Lewis acid-promoted stereoselective rearrangement of 5,6-epoxy carotenoid model compounds
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The novel acyclic tetrasubstituted olefinic end group and the cyclopentyl end group of carotenoids were obtained by Lewis acid-promoted stereoselective rearrangement of the epoxide end group of 5,6-epoxy carotenoids. The scope and limitation of this rearr
- Yamano, Yumiko,Tode, Chisato,Ito, Masayoshi
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p. 2569 - 2581
(2007/10/03)
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- SYNTHESIS OF OPTICALLY ACTIVE 3-DIAZOACETYLRETINALS WITH TRIISOPROPYLPHENYLSULFONYLHYDRAZONE
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An improved synthesis of photoaffinity labeled, optically active retinal derivatives is presented.A stable, easy to handle, glyoxalic acid 2,4,6-triisopropylphenylsulfonylhydrazone (TIPPS) reacts with 3-hydroxyretinal to give the diazoacetylretinal analog in satisfactory yield.
- Ok, Hyun,Caldwell, Charles,Schroeder, Daniel R.,Singh, Anil K.,Nakanishi, Koji
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p. 2275 - 2278
(2007/10/02)
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- 154. Synthese von optisch aktiven, natuerlichen Carotinoiden und strukturell verwandten Naturprodukten. V. Synthese von (3R,3'R)-, (3S,3'S)- und (3R,3'S; meso)-Zeaxanthin durch asymmetrische Hydroborierung. Ein neuer Zugang zu optisch aktiven Carotinoidba
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The synthesis of (3R,3'R)-, (3S,3'S)- and (3R,3'S; meso)-zeaxanthin (1), (19) and (21) is reported utilizing asymmetric hydroboration as the key reaction.Thus, safranol isopropenylmethylether (4) is hydroborated with (+)- and (-)-(IPC)2BH to give the opti
- Ruettimann, August,Mayer, Hans
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p. 1456 - 1462
(2007/10/02)
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