1-Substituted-1-oxo-prostane-derivatives of the E, A and F series
申请人:American Cyanamid Company
公开号:US04297516A1
公开(公告)日:1981-10-27
The invention disclosed herein relates to pharmacologically active prostaglandin derivatives of the E, F, or A series having on the terminal methylene carbon of the alpha chain, a substituent selected from the group consisting of: ##STR1## wherein R is C.sub.1 to C.sub.6 alkyl, and phenyl or phenyl substituted with one or more substituents selected from the group consisting of C.sub.1 -C.sub.4 alkyl, OR.sub.16, SR.sub.16, F, or Cl, and R.sub.16 is C.sub.1 to C.sub.6 alkyl.
1-Hydroxymethyl-1-oxo-prostane-derivatives of the E, A and F-series
申请人:American Cyanamid Company
公开号:US04254036A1
公开(公告)日:1981-03-03
The invention disclosed herein relates to pharmacologically active prostaglandin derivatives of the E, F, or A series having on the terminal methylene carbon of the alpha chain a substituent selected from the group consisting of: ##STR1## wherein R is an alkyl group and R.sub.15 is C.sub.1 -C.sub.4 alkyl, di-C.sub.1 -C.sub.4 -alkylamino, C.sub.1 -C.sub.4 alkoxy, and phenyl or phenyl substituted with one or more substituents from the group consisting of C.sub.1 -C.sub.4, OR, SR, F, or Cl wherein R is as previously defined.
15-Deoxy-16-hydroxy-16-allenyl prostane derivatives of the E and F series
申请人:American Cyanamid Company
公开号:US04233453A1
公开(公告)日:1980-11-11
This invention disclosed herein relates to pharmacologically active 15-deoxy-16-hydroxy prostaglandin derivatives of the E and F series wherein C.sub.16 is substituted with allenyl. These compounds are active as hypotensives, antisecretory, bronchodilating and fertility control agents.
Efficient Synthesis of 4-(3′-Furanyl)butenolide Derivatives via PdII-Catalyzed Oxidative Heterodimeric Cyclization Reaction of 2,3-Allenoic Acids and 1,2-Allenyl Ketones
作者:Shengming Ma、Zhanqian Yu
DOI:10.1002/chem.200305341
日期:2004.4.19
conveniently through chiral resolution with opticallyactiveamines, that is, cinchonidine or alpha-methyl benzylamine. A mechanistic study showed that the reaction proceeded via a matched double oxypalladation-reductive elimination process. The Pd(II) species may be regenerated via the subsequent cyclometallation of two equivalents of 1,2-allenyl ketones with Pd(0) and protonlysis of Pd enolates formed with the
Diastereoselective construction of cyclopent-2-enone-4-ols from aldehydes and 1,2-allenones catalyzed by N-heterocyclic carbene
作者:Dengke Ma、Chunling Fu、Shengming Ma
DOI:10.1039/c6cc07974a
日期:——
Cyclopent-2-enone-4-ols have been prepared highly diastereoselectively from readily available aromatic aldehydes and 1,2-allenones catalyzed by N-heterocycliccarbene. Mechanistic studies showed that there are four possible pathways.