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Highly stereoselective and efficient synthesis of the dopa analogue in pepticinnamin E via enantioselective hydrogenation of dehydroamino acids
Synthesis dopa analogue enantioselective hydrogenation
2010/10/15
An efficient and new method was developed to prepare the dopa analogue 11 in natural pepticinnamin via catalytic hydrogenation of dehydroamino acids (DDAA) with a good yield and ee. Product 11 is a ke...
以二甲亚砜(DMSO)为溶剂, 用多巴胺(Dopamine)胺解聚(苯乙烯-alt-马来酸酐)(P(St-alt-Man))制备双亲交替共聚物P(St-alt-Ma-Dopa). 在选择性溶剂(N,N-二甲基甲酰胺(DMF)/水)中对P(St-alt-Ma-Dopa)进行溶液自组装, 用紫外分光光度计(UV)、透射电镜(TEM)、荧光探针技术、zeta电位仪等技术研究了添加剂(HCl, NaOH或...
Thin Layer Chromatographic Separation and Quantitation of L-Dopa and L-Tyrosine in Mixtures
TLC Separation L-Dopa-L-Tyrosine mixtures
2010/6/29
new TLC separation and quantitation method for L-tyrosine and L-Dopa mixtures was developed. The minimum tyrosine and Dopa quantities which can be measured by this technique are 0.7 and 1.5 m g respe...