Synthesis, spectroscopic structure identification, X-ray study and anticancer activities of new angularly fused quinobenzothiazines
作者:K. Pluta、M. Szmielew、K. Suwińska、M. Latocha
DOI:10.1016/j.molstruc.2016.05.082
日期:2016.10
2D NMR (NOESY, COSY, HSQC and HMBC) spectra which enabled to distinguish the isomers and to exclude retro-Smiles rearrangement and the azine nitrogen atom alkylation pathways. This supposition was fully confirmed by X-ray analysis showing the quinobenzothiazine system to be folded and the substituent at the thiazine nitrogen atom in an equatorial position. Some compounds exhibited anticancer activity
4-Methoxy-3′-alkylsulfinyl-3,4′-diquinolinyl Sulfides--Synthesis and the Reaction with Sodium Methoxide #
作者:M. J. Maślankiewicz、M. Rudnik、A. Maślankiewicz
DOI:10.1080/10426500214302
日期:2002.10
Reaction of 4-methoxy-3'-alkylthio-3,4'-diquinolinyl sulfides 1a-d with a nitrating mixture led to the title sulfoxides 2a-d , but the same treatment of isopropylthio derivative 1e resulted in S-dealkylation and oxidation with formation of 3,3'-diquinolinyl disulfide 3 . 3'-Alkylsulfinyl group promotes nucleophilic methoxy-desulfidation of 4'-quinolinyl sulfur bond in sulfoxides 2 , as compared to