摘要:
The present invention is directed to curcumin analogs (I), wherein Y is OH, halogen, or CF3; Z is H, OH, OR1, halogen, or CF3; X1 and X2 are independently C or N; and A is as defined in the application; exhibiting anti-tumor and anti-angiogenic properties, pharmaceutical formulations including such compounds and methods of using such compounds.
摘要:
Disclosed are a diethylenicallyunsaturated monomer represented by the following formula [Ia]: wherein n is an integer of from 1 to 10, and a and b each represent 0 or an integer of from 1 to 4, and an optical resin which is substantially insoluble and infusible and has a refractive index η D of at least 1.62, and which is obtained by polymerizing a monomer comprising 50 to 100% by weight of this diethylenically unsaturated monomer.
摘要:
Novel cyclopentane derivatives which are useful as an intermediate for the preparation of N-(L-aspartyl)-N'-(2,2,5, 5-tetramethylcyclopentanecarbonyl)-R-1, 1-diaminoethane are represented by the formula (I) wherein R 1 is hydrogen and R 2 is cyano, formyl, carbamoyl, alkanesulfonyloxy, or wherein R 3 and R 4 are the same or different and represent alkyl, substituted alkyl or R 1 and R 2 are combined to be methylsulfinylmethylene, acetoxymethylthiomethylene, halomethylthiomethylene, methylthiomethylene, alkoxymethylene, or -CH 2 -O-.
摘要:
A process for preparing organic thioethers of formula R-S-R, in which R is an aliphatic, aryl, arylaliphatic or heterocyclic radical and R 1 is an aliphatic or arylaliphatic radical, from organic dithiocarbonates and organic halides or sulphonates, in the presence of an aqueous alkaline base and a phase transfer catalyst, at a temperature of between 50° and 100°C for a time of 10-60 minutes. The process allows the preparation of large classes of products used as dyestuff and pharmaceutical intermediates, and as pesticides herbicides, oxidation inhibitors, lubricating oil additives and the like.
摘要:
The present invention refers to a process making use of a radical initiator system comprising peroxy compounds, in particular peroxyketals, in the presence of an acid catalyst to initiate radical processes at low temperature, such as room temperature and below.
摘要:
Novel selective synthesis route to introduce primary alkyl groups on aromatic compounds is disclosed. The synthesis route is based on electrophilic aromatic substitutions of thionium ion species that are generated in-situ from aldehydes and thiols, affording benzyl sulfide that can be reduced with triethylsilane.
摘要:
The present invention refers to a process making use of a radical initiator system comprising peroxy compounds, in particular peroxyketals, in the presence of an acid catalyst to initiate radical processes at low temperature, such as room temperature and below.
摘要:
The present invention provides substituted di-, tri-, tetra- and penta-sulfide compounds and compositions, and methods of using the same for the treatment and/or prevention of a cell proliferative disorder. The present invention also provides methods for preparing trisulfide compounds and compositions.