20624-87-7Relevant academic research and scientific papers
Synthesis and biological activities of new halophenols
Zheng, Fei Lang,Ban, Shu Rong,Feng, Xiu E.,Zhao, Cheng Xiao,Du, Guan Hua,Li, Qing Shan
, p. 303 - 311 (2013/07/28)
A series of new halophenols were synthesized, and their structures were established on the basis of 1H, 13C NMR and mass spectral data. All of the prepared compounds were screened for their in vitro protein tyrosine kinase (PTK) and vascular smooth muscle cell (VSMC) proliferation inhibitory activity. Twelve halophenols showed significant PTK inhibitory activity, most of them exhibited stronger activities than that of genistein, a positive reference compound. Several halophenols also displayed moderate VSMC proliferation inhibitory activity, compound 8c showed higher activity than that of tetrandrine, a positive reference compound. The preliminary structure-activity relationships of these compounds were investigated and discussed. The results provided a foundation for the action mechanism study and further structure optimization of the halophenols.
Studies on Pitch Problems Caused by Pulping and Bleaching of Tropical Woods. XIV. Chemistry of the Aurone Derivatives at the Conventional Bleaching Stages
Ohtani, Yoshito,Sumimoto, Masashi
, p. 613 - 622 (2007/10/02)
Rengasin (1), which is responsible for the colored specks on a sheet of bleached sulfate pulp from the woods of rengas (Anacardiaceae), was converted into R1 7 having a novel carbon skeleton.A closely related analogue, S1 8, prepared from sulfuretin (2) was used as a model to investigate further conversions under bleaching conditions.Chlorination of S1 8 produced an equilibrium mixture involving compound 9 as a dominant compound.The latter was transformed by the treatment with chlorine dioxide into an orthoquinone (16) via two pathway containing 10 in one and 15 in another.The monomeric quinone (16) immediately dimerized in acidic media to give 20 under the same conditions as above, and the further oligomerization by the process similar to that in dimerization of 16 finally afforded a mixture of colored oligomers 26.
