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    • 92. 发明申请
    • Pullulan-containing powder, process for producing the same and use thereof
    • 含有支链淀粉的粉末,其制造方法及其用途
    • US20040197410A1
    • 2004-10-07
    • US10484216
    • 2004-01-20
    • Toshiyuki SugimotoToshio Miyake
    • C12P019/04A61K009/14C08B037/00
    • C08J3/12A23L29/274A23P20/20A61K8/0212A61K8/11A61K8/73A61Q5/02A61Q17/04A61Q19/00A61Q19/02C08B37/0018C08J3/14C08J2305/00C08K5/15C08L5/00C08L5/16C08L2666/26
    • The object of the present invention is to overcome conventional demerits of pullulan powders prepared by conventional techniques, i.e., they could not be homogeneously mixed with non-reducing saccharides composed of glucose units when mixed together, and the resulting mixtures do not easily dissolve in water; and to provide a pullulan-containing powder with an improved rate of water dissolution, as well as to provide preparations and uses thereof. The present invention solves the above object by providing a pullulan-containing powder which uniformly comprises pullulan as a main ingredient and a non-reducing saccharide, and their process and uses; wherein the pullulan-containing powder is prepared by the steps of preparing a solution dissolving pullulan and a non-reducing saccharide homogeneously, pulverizing the solution, and collecting the resulting pullulan-containing powder. The powder has an improved rate of water dissolution, while retaining satisfactory resistance to humidity without fear of causing separation between the pullulan and the non-reducing sccharide.
    • 本发明的目的是克服通过常规技术制备的支链淀粉粉末的常规缺点,即当它们混合在一起时不能与由葡萄糖单元组成的非还原性糖类均匀混合,并且所得混合物不容易溶于水 ; 并提供具有改善的水溶解速率的含支链淀粉的粉末,以及提供其制备和用途。 本发明通过提供均匀地包含支链淀粉作为主要成分和非还原性糖的支链淀粉粉末及其工艺和用途来解决上述目的。 其中含有支链淀粉的粉末通过以下步骤制备:均匀地制备溶解支链淀粉和非还原性糖的溶液,粉碎溶液,并收集所得的含支链淀粉粉末。 粉末具有提高的水溶解速率,同时保持令人满意的耐湿性,而不用担心在支链淀粉和非还原性螯合剂之间分离。
    • 96. 发明授权
    • Camptothecin derivatives
    • 喜树碱衍生物
    • US5892043A
    • 1999-04-06
    • US773182
    • 1996-12-27
    • Kenji TsujiharaTakayuki KawaguchiSatoshi OkunoToshiro Yano
    • Kenji TsujiharaTakayuki KawaguchiSatoshi OkunoToshiro Yano
    • A61K47/48C08B37/00C08B37/02C07D471/00
    • C08B37/0018A61K47/4823A61K47/48338C08B37/0021
    • A camptothecin derivative comprising a compound of the formula �I!: ##STR1## wherein R.sup.1, R.sup.2, R.sup.3, R.sup.4 and R.sup.5 are (A) adjacent two groups combine to form alkylene, or both are H, and one of the remaining three groups is --X.sub.n --Alk.sub.m --R.sup.6, and the other two are H, alkyl or halogen, or (B) adjacent two groups combine to form alkylene, and one of the carbon atoms of said alkylene group is substituted by --X.sub.n --Alk.sub.m --R.sup.6, and the remaining three groups are H, alkyl or a halogen, and one or two --CH.sub.2 -- of the alkylene in (A) or (B) may optionally be replaced by --O--, --S-- or --NH--, X is --O-- or --NH--, Alk is alkylene, R.sup.6 is --NH.sub.2, ##STR2## or --OH, m and n are both 0 or 1, or m is 1 and n is 0, which camptothecin compound is bound to a polysaccharide having carboxyl groups via an amino acid or a peptide, or a pharmaceutically acceptable salt thereof. Said camptothecin derivatives show enhanced antitumor activities but few side effects and are useful as a medicament.
    • 包含式[I]化合物的喜树碱衍生物:其中R 1,R 2,R 3,R 4和R 5是(A)相邻的两个基团结合形成亚烷基,或两者都是H,并且其中之一 其余三个为-Xn-Alkm-R6,另外两个为H,烷基或卤素,或(B)相邻的两个基团结合形成亚烷基,所述亚烷基的一个碳原子被-Xn- Al-C-R6,其余三个基团是H,烷基或卤素,并且(A)或(B)中亚烷基的一个或两个-CH 2可以任选地被-O - , - S-或-NH - ,X为-O-或-NH-,Alk为亚烷基,R6为-NH2,或IMA为-OH,m和n均为0或1,或m为1,n为0,喜树碱化合物为 通过氨基酸或肽或其药学上可接受的盐与具有羧基的多糖结合。 所述喜树碱衍生物显示出增强的抗肿瘤活性,但副作用很少,可用作药物。
    • 97. 发明授权
    • Cyanoethylpullulan
    • 氰基乙基
    • US4322524A
    • 1982-03-30
    • US168269
    • 1980-07-10
    • Yoshiro OndaHiroaki MutoHiroshi Suzuki
    • Yoshiro OndaHiroaki MutoHiroshi Suzuki
    • C08B37/00
    • C08B37/0018
    • The present invention provides a novel compound cyanoethylpullulan which is a cyanoethylation product of pullulan. Pullulan is readily cyanoethylated by the reaction with acrylonitrile in the presence of an alkali catalyst such as sodium hydroxide.The cyanoethylpullulan having a degree of cyanoethylation of at least 50% has various unique properties in the heat resistance, solubility in organic solvents, film-forming property, adhesive bonding to metals and the like in comparison with related cyanoethylated products such as cyanoethylcellulose and cyanoethylated polyvinyl alcohol.
    • 本发明提供了作为支链淀粉的氰乙基化产物的新型化合物氰乙基普兰兰。 在碱性催化剂如氢氧化钠的存在下,通过与丙烯腈的反应,将支链淀粉容易地氰乙基化。 具有至少50%氰基乙基化度的氰乙基普兰兰与相关的氰乙基纤维素和氰乙基化聚乙烯吡咯烷酮相关的氰乙基化产物相比具有各种独特的耐热性,在有机溶剂中的溶解性,成膜性,与金属的粘合性等 醇。
    • 98. 发明授权
    • Pullulan aminoalkyl ether
    • 支链淀粉氨基烷基醚
    • US4167623A
    • 1979-09-11
    • US848033
    • 1977-11-03
    • Fumio FujitaKosuke FukamiMasanori Fujimoto
    • Fumio FujitaKosuke FukamiMasanori Fujimoto
    • C08B37/00C07H15/04
    • C08B37/0018
    • Pullulan aminoalkyl ether is obtained by reacting pullulan with an aminoalkylating agent in a solvent in the presence of an alkali. This ether may be used as a cationic polymer of considerable utility in industries. For instance, when used in a paper coating material, it gives desirable effects on gloss, RI dry pick, and RI wet pick and, furthermore, as compared with pullulan, markedly improves physical properties of the coated paper such as tearing strength, tensile strength and wrinkle recovery; it improves also retention of loading materials such as clay and calcium carbonate.
    • 支链淀粉氨基烷基醚通过在碱存在下在溶剂中将支链淀粉与氨基烷基化试剂反应得到。 该醚可用作工业中相当实用的阳离子聚合物。 例如,当在纸张涂布材料中使用时,其对光泽度,RI干性接枝和RI湿腻子具有期望的效果,此外,与支链淀粉相比,显着改善涂布纸的物理性能如撕裂强度,拉伸强度 和皱纹恢复; 它还改善了载体材料如粘土和碳酸钙的保留。
    • 100. 发明授权
    • Diester crosslinked polyglucan hydrogels and reticulated sponges thereof
    • 二酯交联聚葡聚糖水凝胶及其网状海绵
    • US4002173A
    • 1977-01-11
    • US568030
    • 1975-04-14
    • James H. ManningJohn H. Stark
    • James H. ManningJohn H. Stark
    • A61L15/64A61K31/715A61L15/60A61P7/04B01J20/24C08B33/00C08B33/02C08B37/00C08B37/02F23L3/00
    • C08B37/0021A61L15/425A61L15/60C08B33/02C08B37/0018A61L2400/04
    • Novel hydrogel compositions of diester crosslinked polyglucans and a process for their preparation are provided. Amylose, dextran, and pullulan succinates and glutarates when crosslinked as described were found to not only have use as general fluid sorbants but also to have exceptional hemostatic activity, adherence to a wound, and bioabsorption without causing undue irritation of the tissue or toxic effects. Reticulated hydrogel sponges made of the crosslinked diesters which are particularly useful as general fluid sorbants, and those of amylose succinate and amylose glutarate are most excellent bioabsorbable hemostatic agents. The sponges are made by lyophilizing water-soluble salts of the mono- or half-esters, such as water-soluble salts of amylose succinate or amylose glutarate, under process conditions of the invention in the presence of a reticulating agent which causes a controlled melting of the salt solution as it nears the dry state during the lyophilizing step. The resulting reticulated, porous, open-celled sponge is then crosslinked by heating the sponge under dehydrating conditions to form diester-crosslinks. The sponge is highly porous, is moderately strong, and has the ability to retain up to 40 times its weight of isotonic saline. When neutralized with physiologically acceptable salts, the sponge has exceptional hemostatic activity, adherence to bleeding tissue, and bioabsorption without causing substantial irritation of the tissue or toxic effects.The invention also comprises a process of providing hemostasis at the site of a wound, employing the diester cross-linked polyglucan hydrogels or reticulated sponges thereof.
    • 提供了二酯交联聚葡聚糖的新型水凝胶组合物及其制备方法。 发现当如上所述交联时,直链淀粉,葡聚糖和支链淀粉琥珀酸酯和戊二酸酯不仅可以用作普通流体吸着剂,而且具有特殊的止血活性,对伤口的粘附和生物吸收,而不会对组织造成不适当的刺激或毒性作用。 特别可用作一般液体吸附剂的交联二酯制成的网状水凝胶海绵,以及直链淀粉琥珀酸酯和直链淀粉戊二酸酯的网状水凝胶海绵是最优异的生物可吸收止血剂。 海绵通过在本发明的工艺条件下,在引起受控熔化的网状剂的存在下,将单酯或半酯的水溶性盐如琥珀酸直链淀粉的水溶性盐或直链淀粉戊二酸盐的水溶性盐冻干, 的盐溶液,因为其在冻干步骤期间接近干燥状态。 然后通过在脱水条件下加热海绵将形成的网状多孔的开孔海绵交联,形成二酯交联。 海绵是高度多孔的,中等强度,并且具有保留高达40倍重量的等渗盐水的能力。 当用生理上可接受的盐中和时,海绵具有特殊的止血活性,对出血组织的粘附和生物吸收,而不会对组织产生显着的刺激或毒性作用。