Organic compounds -- part of the class 532-570 series – Organic compounds – Silicon containing
Patent
1988-03-04
1990-08-28
Doll, John
Organic compounds -- part of the class 532-570 series
Organic compounds
Silicon containing
549421, 568591, 568668, 568824, 568825, C07F 718, C07C 3100, C07C 4300, C07D30918
Patent
active
049527169
ABSTRACT:
A process for the manufacture of compounds of the general formula ##STR1## wherein R.sup.1 signifies hydroxy or an etherified hydroxy group, and of zeaxanthin by converting a compound of the general formula ##STR2## wherein R.sup.1 has the above significance, in an inert organic solvent into the acetylenide and reacting this with methyl vinyl ketone, reducing the alcoholate obtained or the alcohol (obtained after hydrolysis of the alcoholate) of the general formula ##STR3## wherein R.sup.1 has the above significance, and subsequently hydrolyzing to give the compound of formula IV and, if desired, converting the compound of formula IV obtained into zeaxanthin.
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Lukac Teodor
Soukup Milan
Doll John
Gould George M.
Hendrickson Stuart L.
Hoffmann-La Roche Inc.
Lunn Paul G.
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