摘要:
The invention relates to a process for the preparation of anagrelide, and for the preparation of intermediates for use in preparing anagrelide. The invention also relates to the inteπnediates per se, in particular compounds of formula (V) where R constitutes a suitable leaving group, which may not be hydrogen. The R group may be is selected from: (i) -SiR 1 3 , (ii) -CH 2 Ar, (iii) -COOR 2 , and (iv) sulfonates such as -SO 2 R 3 .
摘要:
A presente invenção relata a obtenção de compostos carbonílicos e derivados, através de sínteses com alto rendimento e pureza, proporcionando princípios ativos antitumorais com propriedades antiproliferativas seletivas e atividade antimetastática. A presente invenção refere-se ao desenvolvimento de novos butadienos push-pull polifuncionais e seus derivados O e C-prenilados, benzoilados e iodados, com alta conjugação eletrônica na cadeia lateral. Estes compostos exibem alta seletividade antitumoral, provocando a morte celular por apoptose, mostram também propriedades antimetastáticas e não mutagênicas nos estudos experimentais realizados.
摘要:
The present invention relates to esters of carboxylic acid agrochemicals comprising a labile protecting group and having formula (I). Certain of the esters of carboxylic acid agrochemicals do not undergo hydrolysis to a significant degree in the dark, but are cleaved to regenerate the parent carboxylic acid agrochemical when exposed to light. Others of the esters of carboxylic acid agrochemicals undergo hydrolysis under both light and dark conditions. The present invention further relates to methods for the controlled release of a carboxylic acid agrochemicals, and to methods of controlling unwanted plants comprising applying to the unwanted plants an ester of a carboxylic acid agrochemical.
摘要:
The present invention relates to a copolymer for the photoalignment of liquid crystals comprising a photoreactive group as given below in formula (I), compositions thereof, and its use for optical and electro optical devices, especially liquid crystal devices (LCDs).
摘要:
Compounds which are capable of generating acid on photolysis are disclosed, and the uses of these compounds, especially for deprotecting the termini of nucleic acid molecules or peptides during synthesis of arrays. The compounds described herein may be employed in the detritylation of 5'-O-dimethoxytrityl (DMT) protected nucleotides by photolysing the compounds to generate an acid capable of removing the DMT group allowing oligonucleotide arrays to be synthesised using readily available 5'-O-DMT-nucleoside-3'-O-phosphoramidite monomers conventionally used in solid phase nucleic acid synthesis. A method of avoiding the effects of stray light in projection lithography techniques is also disclosed.
摘要:
New chromoionophores of formula (IV) wherein a = 0-3, b = 0 or 1, c = 0 or 1, x = 0 or 1, y = 0 or 1, z = 0 or 1; R', which may be the same or different in each aryl group, is H, halogen, hydrocarbyl, aryl, hydrocarbylaryl or a substituted derivative thereof; R, which may be the same or different, is hydrocarbyl, aryl, hydrocarbylaryl, or a substituted derivative thereof; are useful in optical sensors or colourmetric reagents for clinical use particularly for lithium. When complexed with lithium, the chromoionophores of the invention and other calixarene derivatives can be used for detecting amines, particularly trimethylamine, as an indicator of fish spoilage.