Highly Stereoselective Formation of a Spiro Center by a 1,4-Addition/Elimination Reaction of 3,5-Difluorocyclohexa-2,5-dienones
Spirocyclic 3,5-difluorocyclohexa-2,5-dienones possessing a triisopropylsiloxy-containing cyclic ether appendage were synthesized by oxidative dearomatization of the corresponding phenols. By group selectivity in the nucleophilic 1,4-addition/elimination reaction, highly stereoselective formation of the spiro center was successfully achieved. This reaction might provide access to total syntheses of (+)-bisdechlorogeodin and (+)-geodin with complete control of the formation of the spirocyclic structure.
Disclosed is an antitumor effect potentiator for one or more other compounds having an antitumor effect, the antitumor effect potentiator comprising a novel pyrrolopyrimidine compound.
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Paragraph 0340; 0475
(2018/11/21)
NOVEL PYRROLOPYRIMIDINE COMPOUND OR SALT THEREOF, PHARMACEUTICAL COMPOSITION CONTAINING SAME, ESPECIALLY AGENT FOR PREVENTION AND/OR TREATMENT OF TUMORS ETC BASED ON NAE INHIBITORY EFFECT
An object to be solved by the present invention is to provide a novel pyrrolopyrimidine compound or a salt thereof having an NAE inhibitory action and a cell growth inhibitory effect. The present invention provides a compound or a salt thereof represented by Formula (A), as well as an NAE inhibitor, a pharmaceutical composition, and an antitumor agent comprising the compound or a salt thereof as an active ingredient.
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Paragraph 0438; 0439; 0717; 0718
(2017/03/28)
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