72247-82-6Relevant academic research and scientific papers
Identification of SVM-based classification model, synthesis and evaluation of prenylated flavonoids as vasorelaxant agents
Dong, Xiaowu,Liu, Yujie,Yan, Jingying,Jiang, Chaoyi,Chen, Jing,Liu, Tao,Hu, Yongzhou
experimental part, p. 8151 - 8160 (2009/04/11)
Support vector machine (SVM) was applied to predict vasorelaxation effect of different structural molecules. A good classification model had been established, and the accuracy in prediction for the training, test, and overall datasets was 93.0%, 82.6%, an
Synthesis of 5,7-dihydroxy-8-C-prenylflavanone
Hossain,Selahuddin,Tarafdar
, p. 191 - 193 (2007/10/03)
5,7-Dihydroxy-8-C-prenylflavanone (VII, glabranin) Mitscher et al 1983) isolated from the roots and stems of Glycyrriza lepidota has been synthesized by following unambigous route. All the new products have been characterized on the basis of spectral data
Flavanone 8-dimethylallyltransferase in Sophora flavescens cell suspension cultures
Yamamoto, Hirobumi,Senda, Masayuki,Inoue, Kenichiro
, p. 649 - 655 (2007/10/03)
Dimethylallyl diphosphate: naringenin 8-dimethylallyltransferase (EC 2.5.1) was characterized. The enzyme was enantiospecific for (-)-(2S)-naringenin and utilized 3,3-dimethylallyl diphosphate as sole prenyl donor. It required Mg2+ (optimum concentration, 10 mM), and has an optimum pH of 9-10. The apparent K(m) values for 3,3-dimethylallyl diphosphate and naringenin were 120 and 36 μM, respectively. The microsomal fraction prenylated several other flavanones at the C-8 position less effectively as compared with naringenin. Interestingly, when 2'-hydroxynaringenin was used as a prenyl acceptor, the 8-lavandulyl (sophoraflavanone G) and the 6-dimethylallyl derivatives were formed, together with the 8-dimethylallyl derivative, leachianone G. These results suggest that the 2'-hydroxy group of naringenin plays an important role for the formation of a lavandulyl group. (C) 2000 Elsevier Science Ltd.
Variations in the chemical shift of the 5-hydroxyl proton of 7-o-prenylated flavanones
Fukai, Toshio,Nomura, Taro
, p. 1361 - 1364 (2007/10/03)
In 1H nmr examination of 6- or 8-prenylated flavanone 7-methyl and 7-prenyl ethers, the signals of hydrogen-bonded hydroxyl proton appeared in relatively narrow region. Relatively large solvent effect was observed on the signal of 6-prenylflavanone 7-methyl and 7-prenyl ethers.
