A polymer stabilizer comprising the following alkoxy compound:
the alkoxy compound: a compound obtained by alkoxylating at least one hydroxyl group contained in a compound of the following formula (1) containing one formyl group or carbonyl group and (n−
1
) hydroxyl groups in the molecule with an alkyl group having 1 to 12 carbon atoms:
C
n
H
2n
O
n
(1)
(wherein, n represents an integer of 3 or more).
Monohydrates of heptyl to decyl α- d -glucopyranosides as obtained from product mixtures of the Fischer glucosylation were crystallized from water at the Krafft point. The results of the single-crystal X-ray analysis of anhydrous α anomers and their monohydrates provide for a better understanding of crystal formation and stability of their hydrates. The preparation of alkyl β- d -glucopyranosides—without
The invention herein disclosed provides for compositions, methods for synthesizing said compositions, and methods for using said compositions, wherein the compositions and methods may be used to bind to and/or deactivate a poison oak oil, such as urushiol. The compositions and methods can be used to treat and/or reduce an inflammatory reaction and/or hypersensitivity to natural compounds found in poison oak, poison ivy, poison sumac, mango, lac tree, and cashew nut.
The present invention provides novel compositions and formulations for delivering anionic compounds, particularly polynucleotides (DNA and RNA), across cellular boundaries (e.g., cellular membranes) either in vivo or in vitro.
Biphasic Catalysis with Disaccharide Phosphorylases: Chemoenzymatic Synthesis of α-<scp>d</scp>-Glucosides Using Sucrose Phosphorylase
作者:Karel De Winter、Tom Desmet、Tim Devlamynck、Lisa Van Renterghem、Tom Verhaeghe、Helena Pelantová、Vladimír Křen、Wim Soetaert
DOI:10.1021/op400302b
日期:2014.6.20
this work, a buffer/ethyl acetate ratio of 5:3 was identified to be the optimal solvent system, allowing the use of SP in biphasic systems. Careful optimization of the reaction conditions enabled the synthesis of a range of α-d-glucosides, such as cinnamyl α-d-glucopyranoside, geranyl α-d-glucopyranoside, 2-O-α-d-glucopyranosyl pyrogallol, and series of alkyl gallyl 4-O-α-d-glucopyranosides. The usefulness
由于其广泛的受体特异性,蔗糖磷酸化酶(SP)已被用于将葡萄糖转移至多种受体分子。不幸的是,SP对这些受体的亲和力低(K m > 1 M)通常促使添加助溶剂,助溶剂通常不能溶解足够的底物或逐渐引起酶抑制和变性。在这项工作中,确定缓冲液/乙酸乙酯的比例为5:3是最佳溶剂系统,从而允许在双相系统中使用SP。的反应条件的仔细优化启用的范围α-的合成d -glucosides,如肉桂α- d吡喃葡萄糖苷,香叶基α- d吡喃葡萄糖苷,2- ö-α- d吡喃葡萄糖基邻苯三酚,和烷基gallyl 4-系列ö -α- d -glucopyranosides。通过在辅助溶剂和双相反应系统中比较邻苯三酚的葡萄糖基化进一步说明了双相催化的有用性。前者的受体收率仅达到17.4%,而使用双相催化时,大约60%的初始邻苯三酚会转化。