[EN] NOVEL SYNTHESIS ROUTES FOR PROSTAGLANDINS AND PROSTAGLANDIN INTERMEDIATES USING METATHESIS<br/>[FR] NOUVELLES VOIES DE SYNTHÈSE POUR DES PROSTAGLANDINES ET DES INTERMÉDIAIRES DE PROSTAGLANDINE PAR MÉTATHÈSE
申请人:IRIX PHARMACEUTICALS INC
公开号:WO2015048736A1
公开(公告)日:2015-04-02
Methods of synthesizing prostaglandins, prostaglandin analogs and their synthetic intermediates are described. The methods can comprise metal- catalyzed metathesis reactions. Also provided are synthetic intermediates that can be used in the synthesis of the prostaglandins and prostaglandin analogs.
2-Alkyl-3-cyclopentenones were prepared in moderate yields starting from tetrahydrothiopyran-4-one by the one-pot Ramberg–Bäcklund reaction of 6-alkyl-1,4-dioxa-8-thiaspiro[4.5]decane 8,8-dioxides, followed by acid catalyzed de-dioxolanation.
NOVEL SYNTHESIS ROUTES FOR PROSTAGLANDINS AND PROSTAGLANDIN INTERMEDIATES USING METATHESIS
申请人:IRIX PHARMACEUTICALS, INC.
公开号:US20160237056A1
公开(公告)日:2016-08-18
Methods of synthesizing prostaglandins, prostaglandin analogs and their synthetic intermediates are described. The methods can comprise metal-catalyzed metathesis reactions. Also provided are synthetic intermediates that can be used in the synthesis of the prostaglandins and prostaglandin analogs.
Process for the preparation of methyl dihydrojasmonate and homologues
申请人:INTERNATIONAL FLAVORS & FRAGRANCES INC.
公开号:EP0033604A1
公开(公告)日:1981-08-12
There is provided a process of reacting a compound defined according to the structure:
with HX in the presence of n-butanol or toluene in order to form, in one step, a compound having the structure:
wherein n is 0 or 1, and wherein R is C1-C4alkyl and X is chloro or bromo.