Rearrangements of Cyclobutenones. Synthesis of N-Methyl-7,8-dihydrobenzophenanthridine-9,12-diols and Related Compounds
摘要:
A useful synthetic route to benzophenanthridines and annulated derivatives is reported. These arise from the thermolysis (refluxing chlorobenzene) of squaric acid-derived C(3-N-methyl-N-arylpropynyl)-cyclobutenones via a mechanism which involves an electrocyclic ring opening of the cyclobutenone to the corresponding enynylketenes. Subsequent ring closure to a diradical intermediate followed by radical arylation gives the benzophenanthridines.
The present invention provides compounds having the structural formula (I):
and methods for the treatment of cancer using compounds of formula (I).
本发明提供了具有结构式(I)的化合物,并使用结构式(I)化合物的方法来治疗癌症。
Chromatographic materials for the separation of unsaturated molecules
申请人:Waters Technologies Corporation
公开号:US10092894B2
公开(公告)日:2018-10-09
The present disclosure relates to a method of separating a compound of interest, particularly unsaturated compound(s) of interest, from a mixture. The compound is separated using a column having a chromatographic stationary phase material for various different modes of chromatography containing a first substituent and a second substituent. The first substituent minimizes compound retention variation over time under chromatographic conditions. The second substituent chromatographically and selectively retains the compound by incorporating one or more aromatic, polyaromatic, heterocyclic aromatic, or polyheterocyclic aromatic hydrocarbon groups, each group being optionally substituted with an aliphatic group.
CHROMATOGRAPHIC MATERIALS FOR THE SEPARATION OF UNSATURATED MOLECULES
申请人:Waters Technologies Corporation
公开号:EP3113857A1
公开(公告)日:2017-01-11
LIGHT-EMITTING DIODE DEVICE FOR VOLTAGE SWITCHABLE DIELECTRIC MATERIAL HAVING HIGH ASPECT RATIO PARTICLES
申请人:Kosowsky Lex
公开号:US20100271831A1
公开(公告)日:2010-10-28
One or more embodiments provide for a light emitting diode device that utilizes voltage switchable dielectric material having semi-conductive or conductive materials that have a relatively high aspect ratio.