Polycyclic compounds, their preparation and their use as phosphodiesterases inhibitors
申请人:TSUMURA & CO.
公开号:EP0594890A1
公开(公告)日:1994-05-04
Polycyclic compounds (I) can be prepared in accordance with the following reaction formula:
wherein R₁-R₈ each represents a hydrogen atom, a hydroxyl group, an alkoxyl group or a substituted or unsubstituted benzyloxy group or neighboring two groups of R₁-R₈ are coupled together to form an alkylenedioxy group; and A is an alkylene group which may be substituted by one or more alkoxycarbonyl groups, an alkenylene group which may be substituted by one or more alkoxycarbonyl groups, or a group represented by any one of the following formulas:
Direct Carbon Isotope Exchange through Decarboxylative Carboxylation
作者:Cian Kingston、Michael A. Wallace、Alban J. Allentoff、Justine N. deGruyter、Jason S. Chen、Sharon X. Gong、Samuel Bonacorsi、Phil S. Baran
DOI:10.1021/jacs.8b12035
日期:2019.1.16
alkyl carboxylic acids is presented. Simple activation via redox-active ester formation was followed by nickel-mediated decarboxylative carboxylation to afford a range of complex compounds with ample isotopic incorporations for drug metabolism and pharmacokinetic studies. The practicality and operational simplicity of the protocol were demonstrated by its use in an industrial carbon-14 radiolabeling setting
Process for the preparation of polycyclic compounds
申请人:TSUMURA & CO.
公开号:EP0511666A1
公开(公告)日:1992-11-04
Polycyclic compounds (I) can be prepared in accordance with the following reaction formula:
wherein R₁-R₈ each represents a hydrogen atom, a hydroxyl group, an alkoxyl group or a substituted or unsubstituted benzyloxy group or neighboring two groups of R₁-R₈ are coupled together to form an alkylenedioxy group; and A is an alkylene group which may be substituted by one or more alkoxycarbonyl groups, an alkenylene group which may be substituted by one or more alkoxycarbonyl groups, or a group represented by any one of the following formulas:
Process for the preparation of polycyclic compounds using ferric
申请人:Tsumura & Co.
公开号:US05321135A1
公开(公告)日:1994-06-14
Polycyclic compounds (I) can be prepared in accordance with the following reaction formula: ##STR1## wherein R.sub.1 -R.sub.8 each represents a hydrogen atom, a hydroxyl group, an alkoxyl group or a substituted or unsubstituted benzyloxy group or neighboring two groups of R.sub.1 -R.sub.8 are coupled together to form an alkylenedioxy group; and A is an alkylene group which may be substituted by one or more alkoxycarbonyl groups, an alkenylene group which may be substituted by one or more alkoxycarbonyl groups, or a group represented by any one of the following formulas: ##STR2##