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1)  C_(11)β-hydroxylation
C11β-羟基化
1.
C_(11)β-hydroxylation is one of the most difficult microbial conversion of steroids for production of hydrocortisone.
C11β-羟基化是甾体微生物转化中难以实现的一步反应。
2)  hydroxypropylation
羟丙基化
1.
The influence of hydroxypropylation on pasting properties of starches from normal corn hybrids;
羟丙基化反应对普通玉米杂交种淀粉糊化性质的影响
2.
Results:The modification by hydroxypropylation remarkably decreases the en- thalpy,onset temperature,top temperature,conclusion temperature of all the native starches from normal corn hybrids,de- creases by 29.
结果表明:羟丙基化改性显著降低了所有普通玉米杂交种淀粉的热焓值、起始糊化温度、峰值糊化温度和终止糊化温度,平均降幅分别为29。
3.
Results showed that pasting temperature, enthalpy and peak time of all starches decreased, and peak viscosity of the three starches increased after hydroxypropylation and esterification.
采用了实验室方法提取了高直链、糯性和普通玉米杂交种的淀粉,并分别进行了羟丙基化和磷酸酯化反应。
3)  hydroxymethylation [,haidrɔksi,meθi'leiʃən]
羟甲基化
1.
Chloromethylation and Hydroxymethylation of SEBS;
SEBS的氯甲基化及羟甲基化
2.
Analysis on modification of peat nitrification and hydroxymethylation from Zongyang of Anhui Province;
安徽枞阳泥炭硝化和羟甲基化改性分析
3.
The modification reaction included hydroxymethylation of gluten and cationic activation with epichlorohydrin.
采用廉价可生物降解的小麦谷朊蛋白为原料,经过羟甲基化和阳离子化改性合成类似聚酰胺聚胺环氧氯丙烷(PPE)的纸张增强剂。
4)  15α-hydroxylation
15α-羟基化
1.
Optimization Studies on Fermentation Condition of Steroid 15α-Hydroxylation by Penicillium raistrickii;
雷斯青霉转化左旋乙基甾烯双酮15α-羟基化反应工艺研究
5)  α-hydroxylation
α-羟基化
1.
Studies on α-Hydroxylation of Ticyclic Carboxylates;
三环羧酸酯的α-羟基化反应研究
2.
Asymmetric epoxidation of α,β-unsaturated aldehyde/ketone as well as olefin, and asymmetric α-hydroxylation of carbonyl compounds catalyzed by various types of organocatalysts are reviewed in this paper.
综述了不同类型的有机催化剂催化的α,β-不饱和醛酮、烯烃的不对称环氧化反应及羰基化合物的不对称α-羟基化反应,并对催化特点及催化机理作了详细的描述。
6)  11α-hydroxylation
11α-羟基化
1.
Primary Study on the 11α-hydroxylation of Steroids and Its Kinetics of Rhizopus Nigricans;
黑根霉甾体11α-羟基化发酵工艺与细胞动力学的初步研究
补充资料:3β,17α-二羟基-16β-甲基孕甾-9(11)-烯-20-酮
分子式:C22H34O3
分子量:346.51
CAS号:暂无

性质:结晶。熔点206-216℃。

制备方法:可用海可吉宁经(3-位羟基)酰化、消除(9,11-位脱氢)、(12-位酮基)还原、氧化、水解、消除,生成3β-羟基孕甾-9(11),16-二烯-20-酮-3-醋酸酯,进而(16-位双键与亚硝基甲基脲)加成并消除,引入16β-甲基,然后经(16-位双键)环氧化并开环,形成17α-羟基-15,16-位双键,最后经(15-位双键)氢化、(3-位乙酰基)水解制得该品。

用途:倍他米松的中间体。

说明:补充资料仅用于学习参考,请勿用于其它任何用途。
参考词条