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38 条记录 (耗时 0.017 秒)

    Anhydrosugar synthesis
    1.
    发明授权
    Anhydrosugar synthesis 有权

    公开(公告)号：US10364265B1

    公开(公告)日：2019-07-30

    申请号：US15380030

    申请日：2016-12-15

    申请人： William Marsh Rice Univeristy

    发明人： Li Chen ,  Michael S Wong ,  Zongchao Zhang

    IPC分类号： C07H3/10

    摘要： Improved methods of making anhydrosugars by pyrolysis of a substrate sugar to remove at least one water molecule thereby producing a desired anhydrosugar and side products, the improvement being either 1) protecting one hydroxyl group of the substrate sugar before pyrolysis; or (2) pretreating the substrate sugar with a metal salt and optional acid before pyrolysis, wherein lower amounts of said side products are produced by said improved method.

    Isolation of levoglucosan from lignocellulosic pyrolysis oil derived from wood or waste newsprint
    3.
    发明授权
    Isolation of levoglucosan from lignocellulosic pyrolysis oil derived from wood or waste newsprint 失效
    从木材或废旧新闻纸衍生的木质纤维素裂解油中分离左旋葡聚糖

    公开(公告)号：US5432276A

    公开(公告)日：1995-07-11

    申请号：US72456

    申请日：1993-09-02

    申请人： Luc Moens

    发明人： Luc Moens

    IPC分类号： C07H3/10 ,  C07H1/06 ,  C07H1/08

    CPC分类号： C07H3/10

    摘要： A method is provided for preparing high purity levoglucosan from lignocellulosic pyrolysis oils derived from wood or waste newsprint. The method includes reducing wood or newsprint to fine particle sizes, treating the particles with a hot mineral acid for a predetermined period of time, and filtering off and drying resulting solid wood or newsprint material; pyrolyzing the dried solid wood or newsprint material at temperatures between about 350.degree. and 375.degree. C. to produce pyrolysis oils; treating the oils to liquid-liquid extraction with methyl isobutyl ketone to remove heavy tar materials from the oils, and to provide an aqueous fraction mixture of the oils containing primarily levoglucosan; treating the aqueous fraction mixtures with a basic metal salt in an amount sufficient to elevate pH values to a range of about 12 to about 12.5 and adding an amount of the salt in excess of the amount needed to obtain the pH range to remove colored materials of impurities from the oil and form a slurry, and freeze-drying the resulting slurry to produce a dry solid residue; and extracting the levoglucosan from the residue using ethyl acetate solvent to produce a purified crystalline levoglucosan.

    摘要翻译： 提供了从木材或废旧新闻纸衍生的木质纤维素裂解油制备高纯度左旋葡聚糖的方法。 该方法包括将木材或新闻纸减少至细粒度，用热无机酸处理颗粒预定的时间，并过滤掉干燥所得的实木或新闻纸材料; 在约350℃和375℃之间的温度下热解干燥的实木或新闻纸材料以产生热解油; 用甲基异丁基酮处理油液液萃取以从油中除去重质焦油物质，并提供主要含有左旋葡聚糖的油的含水级分混合物; 用足以将pH值升高至约12至约12.5的量的碱金属盐处理含水级分混合物并加入超过获得pH范围所需量的盐以除去有色材料 来自油的杂质并形成浆料，并将所得浆液冷冻干燥以产生干固体残余物; 并使用乙酸乙酯溶剂从残留物中提取左旋葡聚糖以产生纯化的结晶左旋葡聚糖。

    1,6-anhydro-.beta.-hexopyranose derivatives and their use as herbicides and plant growth regulators
    4.
    发明授权
    1,6-anhydro-.beta.-hexopyranose derivatives and their use as herbicides and plant growth regulators 失效
    1,6-脱水-β-己糖吡喃糖衍生物及其作为除草剂和植物生长调节剂的用途

    公开(公告)号：US5047518A

    公开(公告)日：1991-09-10

    申请号：US507305

    申请日：1990-04-10

    申请人： Richard H. Furneaux ,  Ronald F. Henzell ,  Peter C. Tyler

    发明人： Richard H. Furneaux ,  Ronald F. Henzell ,  Peter C. Tyler

    IPC分类号： C07H3/10 ,  A01N43/90 ,  A01N47/18 ,  A01N57/16 ,  C07D493/08 ,  C07H13/08 ,  C07H15/04 ,  C07H15/14 ,  C07H15/18 ,  C07H15/26 ,  C07H19/01

    CPC分类号： C07H19/01 ,  A01N43/90 ,  A01N47/18

    摘要： Herbicidal and/or plant-growth regulatory compositions comprising, together with a carrier and/or surface-active agent, an effective amount of at least one herbicidal and/or plant growth regulatory active agent selected from compounds of formula (I) ##STR1## (in which R represents an optionally substituted aralkyl group,X represents an O--, N-- or S-linked organic group, an optionally substituted hydrocarbyl group, a halogen atom, a hydroxy, amino, alkoxyamino, nitro, cyano, azido, sulpho or phospho group, or together with the group R.sup.2e, X may represents a ketonic oxygen atom --O-- or a group of formula --CH.sub.2 O--;R.sup.1e represents a hydrogen atom or an optionally substituted hydrocarbyl group, or a formyl group;R.sup.2e represents a hydrogen atom, a hydroxy group or an optionally substituted hydrocarbyl or O-linked hydrocarbyl group, or, together with the group X, R.sup.2e may represent a ketonic oxygen atom --O-- or a group of formula --CH.sub.2 O--;R.sup.3a represents a hydrogen atom, a hydroxy group or an optionally substituted alkoxy, alkenyloxy, aralkoxy or C.sub.1-4 hydrocarbyl group;R.sup.3e represents a hydrogen atom, a hydroxy group or an optionally substituted hydrocarbyl or O-linked hydrocarbyl group; andR.sup.4e represents a hydrogen atom or an optionally substituted hydrocarbyl group)and enantiomers and salts thereof.Methods for preparing the compounds of formula (I) are described; the compositions are valuable as herbicides and/or plant-growth regulants, particularly for use with crops such as soya, rape, sugar-beet, cotton, wheat, maize and rice.

    摘要翻译： 除草剂和/或植物生长调节组合物包含与载体和/或表面活性剂一起的有效量的至少一种选自式（I）化合物的除草和/或植物生长调节活性剂， （其中R表示任选取代的芳烷基，X表示O-，N-或S-连接的有机基团，任选取代的烃基，卤素原子，羟基，氨基，烷氧基氨基，硝基，氰基，叠氮基，磺基 或磷酸基，或与基团R2e一起，X可以表示酮氧原子-O-或式-CH 2 O-的基团; R 1e表示氢原子或任选取代的烃基或甲酰基; R 2b表示 氢原子，羟基或任选取代的烃基或O-连接的烃基，或者与基团X一起可以代表酮氧原子-O-或式-CH 2 O-的基团; R 3a表示氢原子 ，羟基或任选的 芳取代的烷氧基，烯氧基，芳烷氧基或C 1-4烃基; R3e表示氢原子，羟基或任选取代的烃基或O连接的烃基; 并且R 4e表示氢原子或任选取代的烃基）及其对映异构体和盐。 描述了制备式（I）化合物的方法; 该组合物作为除草剂和/或植物生长调节剂是有价值的，特别适用于作物如大豆，油菜，甜菜，棉花，小麦，玉米和水稻。

    Process for preparing 1,6-.beta.-D-anhydroglucopyranose (levoglucosan) in high purity
    5.
    发明授权
    Process for preparing 1,6-.beta.-D-anhydroglucopyranose (levoglucosan) in high purity 失效
    制备高纯度1,6-β-D-脱水葡萄糖吡喃糖（左旋葡聚糖）的方法

    公开(公告)号：US5023330A

    公开(公告)日：1991-06-11

    申请号：US302885

    申请日：1989-01-30

    申请人： Michael Gander ,  Knut M. Rapp ,  Hubert Schiweck

    发明人： Michael Gander ,  Knut M. Rapp ,  Hubert Schiweck

    IPC分类号： C07H3/10 ,  C07H1/08 ,  C07H19/01

    CPC分类号： C07H19/01

    摘要： Process of preparing 1,6-.beta.-D-anhydroglucopyranose (levoglucosan) in high purity is described, where the starting material with a water-content, adjusted to max. 20%, is pyrolyzed, the volatile components are condensed and this distillate is neutralized. After filtration and optional treatment with an adsorbent, the mixture is chromatographically separated over an ion-exchange resin with water as eluent. Levoglucosan containing fractions are concentrated and crystalline levoglucosan is obtained by an evaporation - and/or cooling crystallization from a supersaturated water solution.

    摘要翻译： 描述了制备高纯度1,6-β-D-脱水葡萄糖吡喃糖（左旋葡聚糖）的方法，其中起始物料的含水量调节至最大。 20％，被热解，挥发性成分被冷凝，该馏出物被中和。 过滤并用吸附剂任选处理后，将混合物用离子交换树脂与水作为洗脱液进行色谱分离。 将含有左旋葡聚糖的级分浓缩，通过从过饱和水溶液中蒸发和/或冷却结晶获得结晶左旋葡聚糖。

    Anhydro-sugars
    6.
    发明授权
    Anhydro-sugars 失效
    脱水糖

    公开(公告)号：US4177344A

    公开(公告)日：1979-12-04

    申请号：US833795

    申请日：1977-09-16

    申请人： Gerhard Baschang ,  Jaroslav Stanek ,  Alberto Rossi ,  Alex Sele

    发明人： Gerhard Baschang ,  Jaroslav Stanek ,  Alberto Rossi ,  Alex Sele

    IPC分类号： C07D313/06 ,  A61K31/335 ,  A61P29/00 ,  C07H15/18 ,  C07H19/01 ,  C07H3/10

    CPC分类号： C07H15/18 ,  C07H19/01 ,  Y10S514/822

    摘要： The invention relates to novel 1,6-anhydro-.beta.-D-hexopyranose derivatives of the formula I ##STR1## in which R.sub.2 is hydrogen, methyl or aromatic acyl, R.sub.3 and R.sub.4 are alkyl, alkenyl or aralkyl and one of the radicals R.sub.3 and R.sub.4 is also an aroyl radical and R.sub.4 can also be hydrogen, with the proviso that the radicals R.sub.3 and R.sub.4 together contain at least 3 carbon atoms and, if R.sub.4 is the benzyl radical, the radical R.sub.3 contains at least 2 carbon atoms, and, if one of the radicals R.sub.3 and R.sub.4 is an aroyl radical, R.sub.2 is hydrogen.These compounds especially the 1,6-anhydro-3,4-di-O-benzyl-.beta.-D-glucopyranose or the 1,6-anhydro-.beta.-D-glucopyranose, can be used as fibrinolytic agents and thrombolytic agents.

    摘要翻译： 本发明涉及式Ⅰ的新颖的1,6-脱水-β-十六吡喃糖衍生物，其中R 2是氢，甲基或芳基酰基，R 3和R 4是烷基，链烯基或芳烷基，其中一个基团R 3 并且R4也是芳酰基，R4也可以是氢，条件是基团R3和R4一起含有至少3个碳原子，如果R 4是苄基，则基团R 3含有至少2个碳原子，和 如果基团R 3和R 4中的一个是芳酰基，则R 2是氢。 这些化合物尤其是1,6-脱水-3,4-二-O-苄基-β-D-吡喃葡萄糖或1,6-脱水-β-D-吡喃葡萄糖可用作纤维蛋白溶解剂和溶栓剂。

    Glucan lyase producing 1,5-anhydrofructose
    10.
    发明授权
    Glucan lyase producing 1,5-anhydrofructose 失效
    葡聚糖裂解酶产生1,5-脱水果糖

    公开(公告)号：US5695970A

    公开(公告)日：1997-12-09

    申请号：US416709

    申请日：1995-04-18

    申请人： Shukun Yu ,  Marianne Pedersen ,  Lennart Kenne

    发明人： Shukun Yu ,  Marianne Pedersen ,  Lennart Kenne

    IPC分类号： C07H3/10 ,  C12N9/88 ,  C12P19/02 ,  C12N1/20

    CPC分类号： C12P19/02 ,  C07H3/10 ,  C12N9/88

    摘要： The invention relates to an enzyme, exo-.alpha.-1,4-glucan lyase, capable of successively cleaving the terminal .alpha.-1,4-D-glucosidic bonds from the non-reducing ends of an .alpha.-1,4-glucan. The enzyme is selected from the group consisting of .alpha.-1,4-glucan lyase isolated from an alga and functional derivatives and analogs derived from a nucleotide sequence related to an alga .alpha.-1,4-glucan lyase. Further, a method of enzymatically cleaving the terminal .alpha.-1,4-D-glucosidic bonds from the non-reducing ends of an .alpha.-1,4-glucan, and the degradation product 1,5-anhydrofructose for use as an oxygen radical scavenger or anti-oxidant and/or as a sugar substitute, are disclosed. Additionally, a method of producing an enzyme capable of successively cleaving the terminal .alpha.-1,4-glucosidic bonds from the non-reducing ends of an .alpha.-1,4-glucan; an antibody which binds to the amino acid sequence of the enzyme, and a DNA or RNA probe which recognizes a nucleotide sequence coding for the enzyme, are described.

    摘要翻译： PCT No.PCT / SE93 / 00854 Sec。 371日期1995年04月18日 102（e）1995年4月18日PCT PCT 1993年10月19日PCT公布。 出版物WO94 / 09122 日期1994年04月28日本发明涉及能够从α-1的非还原末端连续切割末端α-1,4-D-糖苷键的酶，外-α-1,4-葡聚糖裂解酶 ，4-葡聚糖。 该酶选自由藻类分离的α-1,4-葡聚糖裂解酶和功能性衍生物以及衍生自与藻类α-1,4-葡聚糖裂解酶相关的核苷酸序列的类似物。 此外，从α-1,4-葡聚糖的非还原末端酶切地切割末端α-1,4- D - 糖苷键的方法，以及用作氧自由基的降解产物1,5-脱水果糖 清除剂或抗氧化剂和/或作为糖代用品。 另外，生产能够从α-1,4-葡聚糖的非还原性末端依次切断末端α-1,4-糖苷键的酶的方法; 描述了结合酶的氨基酸序列的抗体和识别编码该酶的核苷酸序列的DNA或RNA探针。