NOVEL COMPLEXES, PROCESS FOR THEIR PREPARATION, AND MEDICINAL USE OF THEM
申请人:KURARAY CO., LTD.
公开号:EP0270682A1
公开(公告)日:1988-06-15
Pullulans having active sites formed by sulfation, phosPhorylation, sulfonation or carboxylation or their pharmacologically acceptable salts, wherein one hydrogen atom of the active sites represented by formula (I), partially sub- stituted by a group represented by the general formula (II), (wherein L1 and L2 each represents amine or unidentate amine or when taken together, represent bidentate amine. and Y represents an anionic ligand) and/or two hydrogen atoms or the active sites represented by formula (III) or of two formula (IV) groups bound to the same carbon atom or adjacent carbon atoms are partially substituted by a group represented by the formula (V), (wherein L' and L2 are the name as defined above). These compounds have an onco- static activity and are useful as oncostatic agents. Process for their preparation and their medicinal use are also dis- closed
具有通过硫化、磷化、磺化或羧化形成的活性位点或其药理学上可接受的盐的普鲁兰 类,其中式(I)所代表的活性位点的一个氢原子部分被通式(II)所代表的基团取代,(其中 L1 和 L2 各自代表胺或非同位胺,或合在一起代表双同位胺。和 Y 代表阴离子配体)和/或两个氢原子或式(III)所代表的活性位点或与同一碳原子或相邻碳原子结合的两个式(IV)基团部分被式(V)所代表的基团取代(其中 L' 和 L2 的名称如上定义)。这些化合物具有抗静电活性,可用作抗静电剂。它们的制备工艺和药用价值也已公开。
Novel macromolecular complexes, process for producing same and medicinal use of such complexes
申请人:KURARAY CO., LTD.
公开号:EP0307827A2
公开(公告)日:1989-03-22
A dextran or hydroxyethyl starch derivative having one or more carboxylated active sites resulting from reaction with an aliphatic di-, tri- or tetrabasic acid or a reactive derivative thereof, wherein one hydrogen atom of the qroup of the formula
occurring at said active sites is partly substituted by a group of the general formula
wherein L' and L2 each independently is ammine or a unidentate ligand amine or combinedly represent a bidentate ligand amine and Y is an anionic ligand, and/or two hydrogen atoms of two
groups bound to one and the same carbon atom or to two neighboring carbon atoms as occurring at said active sites are, each independently, partly substituted by a group of the general formula
wherein L1 and L2 are as defined above, and a pharmacologically acceptable salt thereof.
The above compound has anticancer activity and is useful as anticancer agents.
Catalytic Oxidative Carbonylation of Primary and Secondary Diamines to Cyclic Ureas. Optimization and Substituent Studies
作者:Fang Qian、Jennifer E. McCusker、Yue Zhang、A. Denise Main、Mary Chlebowski、Michiyo Kokka、Lisa McElwee-White
DOI:10.1021/jo0109319
日期:2002.6.1
W(CO)(6)-catalyzed oxidative carbonylation of 1,3-propanediamine to the corresponding urea has been examined under a variety of conditions. Following optimization, the Thorpe-Ingold effect on ring closure was studied using 2,2-dialkyl-1,3-propanediamines. For the 2,2-dimethyl- and 2,2-dibutyl-1,3-propanediamines, the yields were increased significantly as compared to that of the unsubstituted case. The eight-membered cyclic urea 5-butyl-5-ethyl-1,3-diazepan-2-one (5f) was formed in 38% yield, while only trace amounts of the cyclic urea were produced from the parent 1,5-pentanediamine. In a study of secondary diamines, yields from the carbonylation of N,N'-dialkyl-2,2-dimethyl-1,3-propanediamines were lower than those obtained from the primary diamines. The main byproducts from secondary diamines were tetrahydropyrimidine derivatives formed from a competitive reaction of the substrate with the oxidant and base.