Water-Promoted, Silver–Phosphine Complex–Catalyzed Stereoselective Cyclization of 2-(1-Hydroxy-3-arylprop-2-ynyl)phenols Leading to a Highly Efficient Approach to Aurones
摘要:
Silver-phosphine complexes can be utilized as highly efficient catalysts for the cyclization of 2-(1-hydroxy-3-arylprop-2-ynyl)phenols (1) to give product 2, key intermediates to synthesize aurones (4), with good yields and stereoselectivities in water-toluene mixed solvent. With fluoride as the counteranion, complete E- or Z-stereoselectivities were achieved at high temperature or room temperature, respectively. Furthermore, after removing water from the reaction mixtures, the toluene solution containing crude products 2 can be treated by MnO2 directly without further purification, to give aurones 4 in good yields.
New spiropyrans based on 1,3-benzoxazine-2-one: acid catalyzed synthesis and theoretical insight into the photochromic activity
作者:Ilya V. Ozhogin、Igor V. Dorogan、Boris S. Lukyanov、Eugene L. Mukhanov、Valery V. Tkachev、Anatoly V. Chernyshev、Maria B. Lukyanova、Sergey M. Aldoshin、Vladimir I. Minkin
DOI:10.1016/j.tetlet.2016.04.054
日期:2016.6
A new series of spiropyrans based on 1,3-benzoxazine-2-one were synthesized using acid catalysis. Contrary to expectations, 6′-bromo-6-chloro-3-methyl-8′-nitro-spiro[1,3-benzoxazine-4,2′-chromene]-2-one and 6,6′-dichloro-3-methyl-8′-nitro-spiro[1,3-benzoxazine-4,2′-chromene]-2-one did not exhibit photochromicbehavior, which was explained by TD DFT calculations to be a consequence of the existence
New Photochromic Spiropyrans with ortho-Hydroxyaldimine Substituent
作者:O. A. Komissarova、B. S. Luk’yanov、M. B. Luk’yanova、N. I. Makarova、I. A. Rostovtseva、I. V. Ozhogin、M. S. Korobov
DOI:10.1134/s001250081810004x
日期:2018.10
A series of new spiropyrans of indoline series with ortho-hydroxyaldimine substituent has been synthesized, their structure and photochromic properties have been studied. The structure of the obtained compounds was confirmed by the data of 1H NMR and IR spectroscopy and elemental analysis. Photochromic properties of the prepared compounds have been studied. The introduction of ortho-hydroxy group into
Synthesis and in vitro anticancer activity of 4H-pyrano[2,3-d]pyrimidine−1H-1,2,3-triazole hybrid compounds bearing D-glucose moiety with dual EGFR/HER2 inhibitory activity and induced fit docking study
作者:Nguyen Dinh Thanh、Do Son Hai、Le Thi Huyen、Nguyen Thi Kim Giang、Nguyen Thi Thu Ha、Do Tien Tung、Cao Thi Le、Hoang Thi Kim Van、Vu Ngoc Toan
DOI:10.1016/j.molstruc.2022.133932
日期:2023.1
kinases in comparison with Lapatinib. The resulted dockingstudies showed that compound 8zc displayed binding mode like Erlotinib on EGFR enzyme and showed good binding energies. Induced fit docking, MM-GBSA calculation, and molecular dynamics simulations were carried out to elucidate the inhibitory potential of compound 8zc against tested enzyme 4HJO. Docking analysis showed that amongst the hydrophilic