摘要:
This invention relates to a new one-step process for preparation of novel N-(acyloxyalkoxy)carbonyl derivatives useful as bioreversible prodrug moieties for drugs having a primary or secondary amine function thereon.
摘要:
Useful for the stabilization of polymers, especially polypropylene and polyethylene are esters of 3-tert-butyl or 3-tert-butyl-5-alkyl-4-hydroxyphenyl(alkane) carboxylic acids with oxethylates of bis-(4- or 2-hydroxyphenyl) alkanes, oxides, sulfides or sulfones, with oxethylates of tris-(4-hydroxyphenyl) alkanes, or with oxethylates of 1,3,5-tris-(4-hydroxyphenyl isopropylidene) aryls, the oxethylate preferably comprising a hydroxyethoxy group substituted for each hydroxyl group.
摘要:
Novel phenoxy derivatives are provided which can be represented by the general formula: ##STR1## wherein the various substituents are as defined, and include compounds such as benzyl 6-[p-[5-(1-imidazolyl)pentyloxy]phenoxy]-2,2-dimethylhexanoate.The invention also encompasses pharmaceutical compositions containing the derivatives and their use in treating tumors.
摘要:
Cured resins of high fracture toughness are prepared from N,N'-bisimides of formula I ##STR1## and alkenyl compounds of formula IID(G).sub.m IIin which D is an m-valent group and G represents a phenyl ring having at least one alkenyl (e.g. allyl or 1-propenyl) substituent.
摘要:
Leukotriene antagonists, a process for the preparation thereof, and the use thereof for the treatment of diseases ##STR1## in which R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5 and X have the indicated meanings, a process for the preparation of these compounds, the use thereof as pharmaceuticals, and pharmaceutical products based on these compounds, are described.
摘要:
There is provided a new class of diamines of the formula ##STR1## wherein X=NH or O, and R represents a divalent, substituted or unsubstituted organic group having at the most 20 carbon atoms.The diamines, wherein X has the meaning of an O-atom, may be converted with diacids, diacid dichlorides, aromatic carboxylic acid anhydrides or diisocyanates into poly(esteraramid) amides, poly(esteraramid) imides, or poly(esteraramid) urea or, when X stands for an --NH--group, into poly(amidaramid) amides, poly(amidaramid) imides, or poly(amidaramid) urea.The wholly or largely aromatic polyamides, polyurea or polyimides are of an iterative structure. They can be melt-processed into shaped objects displaying a very good resistance to high temperatures, particularly when use is made of diamines having meta-substituted amide groups or diamines of a non-aromatic structure for the --XRX-- group, or of a non-aromatic structure of the diacids, diacid dichlorides, aromatic carboxylic acid anhydrides or diisocyanate to be linked to the diamines. By alterning the chemical structure of the diamines on the one hand and the diamine-linkable bifunctional compounds on the other, both are melting performance and the level of crystallinity of the end product may be influenced.
摘要:
The compounds of the present invention comprise substituted phenolic thioether derivatives that are specific inhibitors of 5-lipoxygenase and which, therefore, are useful in the treatment of local and systemic inflammation, allergy and hypersensitivity reactions and other disorders in which agents formed in the 5-lipoxygenase metabolic pathway are involved.
摘要:
Provided is an acetylene-terminated aromatic amide compound of the formula ##STR1## wherein X is --O-- or --S--, Z is --O--, --S--, --SO.sub.2 --, or --CO--, and R is --H or --C.tbd.CH in the ortho, meta or para position, wherein at least one R is --.tbd.CH.
摘要翻译:本发明提供一种下式的乙炔封端的芳族酰胺化合物,其中X为-O-或-S-,Z为-O - , - S - , - SO 2 - 或-CO-,R为-H 或-C 3 CH 2在邻位,间位或对位,其中至少一个R是-SO 3 CH 3。
摘要:
Novel benzoxazole compound having, at the 2 position, a group bonding through a carbon atom having no or one hydrogen atom and introduced with a chlorine or bromine atom at the 5 position. The compounds are key intermediates useful for preparing 2-amino-5-nitrophenol derivatives which are useful as intermediates for synthesis of industrial materials, reducing agents, antioxidants, cyan-image-forming couplers and the like.
摘要:
Cured resins of high fracture toughness are prepared from N,N'-bisimides of formula I ##STR1## and alkenyl compounds of formula IID(G).sub.m IIin which D is an m-valent group and G represents a phenyl ring having at least one alkenyl (e.g. allyl or 1-propenyl) substituent.