112823-30-0Relevant articles and documents
Facile synthesis, macroscopic separation, E/Z isomerization, and distinct AIE properties of pure stereoisomers of an oxetane-substituted tetraphenylethene luminogen
Fang, Xiaofeng,Zhang, Yu-Mo,Chang, Kaiwen,Liu, Zhihe,Su, Xing,Chen, Haobin,Zhang, Sean Xiao-An,Liu, Yifei,Wu, Changfeng
, p. 6628 - 6636 (2016)
Control of stereochemistry plays a key role in medicinal chemistry, material and life science. As a prominent AIE luminogen, tetraphenylethene (TPE) derivatives have E/Z isomers which are challenging to separate even by HPLC. Herein, we designed oxetane-substituted TPE (TPE-2OXE) and separated pure isomers by simple column chromatography with high yields, as confirmed by mass spectrometry, IR and NMR spectroscopy. The isomerization of the two isomers can occur by photo- and thermo-activation. Importantly, (Z)-TPE-2OXE isomer solid shows bathochromic emission with a quantum yield 5 times higher than that of (E)-TPE-2OXE. The differences in emission wavelength and quantum yield are derived from distinct emission mechanisms of locally excited (LE) state emission of (E)-TPE-2OXE and charge transfer (CT) state emission of (Z)-TPE-2OXE. The two isomers are also good piezochromic luminescent materials, which have not only an obvious emission color shift but also significantly enhanced luminescence brightness by external force. In addition, (E)-TPE-2OXE solids show self-healing ability, which can crystallize spontaneously from ground amorphous state. The higher brightness of (E)-TPE-2OXE can be retained in solution, so fluorescent AIE nanodots are prepared from the two isomers. Cell-labeling experiments also show that (Z)-TPE-2OXE AIE dots have higher labeling brightness as compared to the (E)-TPE-2OXE isomer. The synthesis and distinct properties of E/Z isomers are beneficial to further development of new TPE derivatives for various applications.
Novel pyrrolopyridine derivatives and its use as HIV inhibitor
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Paragraph 0092; 0093; 0108; 0109; 0110; 0121; 0122; 0123, (2018/03/09)
The present invention relates to a pyrrolopyridine derivative expressed as chemical formula 1, specifically a compound including a substituent group having an oxatane group in R1, its stereoisomer or racemic body, their pharmaceutically acceptable salts or their solvate, a manufacturing method thereof, and an antivirus composition containing the same as an active ingredient, wherein the compound expressed as chemical formula 1 has excellent selectivity and physiological activity with respect to wild type or resistant HIV-1 and therefore can be used as a remedy for AIDS.
PHENYL-TETRAHYDROISOQUINOLINE DERIVATIVES
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Paragraph 0582, (2013/10/22)
The invention provides novel compounds having the general formula (I) wherein R1, R2, R3, R4, R5, R6, R7, R8, R9, R10, R11, R12, A and n are as described herein, compositions including the compounds and methods of using the compounds.