[GRAPHICS]The tetracyclic isogeissoschizoid skeleton has been prepared by a novel route that involves the ozonolysis and double reductive amination of a cyclopentene, a nickel-catalyzed cyclization, and a late-stage Fischer indole synthesis.
This disclosure describes certain 1-alkoximino-2-(.omega.-substituted-alkyl)-2-cyclopentenes useful as intermediates for the preparation of homologues, analogues, congeners, and derivatives of 9-oxo-13-trans-prostenoic acid and of 9-hydroxy-13-trans-prostenoic acid which have antimicrobial activity and prostaglandin-like hypotensive activity.
Derivatives of 9-oxo-13-trans-prostenoic acid amides
申请人:American Cyanamid Company
公开号:US03981868A1
公开(公告)日:1976-09-21
This disclosure described homologues, analogues, congeners, and derivatives of 9-oxo-13-trans-prostenamide and of 9-hydroxy-13-trans-prostenamide, having antimicrobial activity and prostaglandin-like hypotensive activity.
Derivatives of 9-oxo-13-trans-prostenoic acid esters
申请人:American Cyanamid Company
公开号:US04044043A1
公开(公告)日:1977-08-23
This disclosure describes homologues, analogues, congeners, and derivatives of 9-oxo-13-trans-prostenoic acid and of 9-hydroxy-13-trans-prostenoic acid, having antimicrobial activity and prostaglandin-like hypotensive activity.
Fe(III)-Catalyzed Diastereoselective Friedel–Crafts Alkylation–Hemiketalization–Lactonization Cascade for the Synthesis of Polycyclic Bridged 2-Chromanol Lactones
作者:Balasaheb R. Borade、Rajesh Nomula、Rajesh G. Gonnade、Ravindar Kontham
DOI:10.1021/acs.orglett.9b00614
日期:2019.4.19
alkylation–hemiketalization–lactonization cascade of electron-rich hydroxy arenes and distinctively functionalized unsaturated 4-keto esters is developed for the construction of polycyclic bridged 2-chromanol lactones. Following this simple and facile protocol, a broad range of products was prepared in good to excellent yields as a single diastereomer. An unusual conglomerate (enantiomerically pure polymorph) of
Biocatalytic access to nonracemic γ-oxo esters via stereoselective reduction using ene-reductases
作者:Nikolaus G. Turrini、Răzvan C. Cioc、Daan J. H. van der Niet、Eelco Ruijter、Romano V. A. Orru、Mélanie Hall、Kurt Faber
DOI:10.1039/c6gc02493a
日期:——
The asymmetric bioreduction of [small alpha],[small beta]-unsaturated [gamma]-keto esters usingene-reductasesfrom the OldYellowEnzymefamily proceeds with excellent stereoselectivity and high conversion levels, covering a broad range of acyclic and...