Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Novartis AG
Original Assignee
Ciba Geigy AG
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Filing date
Publication date
Application filed by Ciba Geigy AGfiledCriticalCiba Geigy AG
Priority to ES557255ApriorityCriticalpatent/ES8801504A1/en
Publication of ES8801504A1publicationCriticalpatent/ES8801504A1/en
Publication of ES557255A0publicationCriticalpatent/ES557255A0/en
Pharmaceuticals Containing Other Organic And Inorganic Compounds
(AREA)
Abstract
The process comprises reaction of a compound of formula II: where the X4 transforms to hydroxy, through treatment with an acid or basic agent with an alcohol or by reduction. This gives a compound of formula I: where X4 is an esterified hydroxy, etc. R1 is a lower alkyl, R2 is a fluorinated lower alkyl alk is alkenyl or hydroxy alkenyl. - R3 to R7 can be various types of radicals, and the products have anti allergic action.
ES557255A1986-12-161986-12-16Prepn. of 2 fluoro:alkylated 4-acyl resorcin ether(s)
ExpiredES8801504A1
(en)
3',5'-ditertbutyl-4'-hydroxyflavones, method for their preparation and pharmaceutical compositions with an antioxidant and antivasoconstricting activity