With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.5908-62-3,1,1-Dioxo-isothiazolidine,as a common compound, the synthetic route is as follows.,5908-62-3
To a solution of 3-iodo-N-(3,4,5-trifluorophenyl)-4,5,6,7-tetrahydropyrazolo[l,5- a]pyridine-5-carboxamide (compound lh, 20 mg, 0.048 mmol) in DMSO (1.0 mL) was added Cul (2 mg, 0.0095 mmol), K2C03 (7 mg, 0.095 mmol), N,N’-dimethyl-l,2-cyclohexanediamine (2 mg, 0.0095 mmol), and 1,2-thiazolidine 1,1-dioxide (compound 5a, 5 mg, 0.057 mmol). The reaction mixture was stirred at 110 C for 18 hours and then purified by flash chromatography and prep-HPLC to give 3-(l,l-dioxo-l,2-thiazolidin-2-yl)-N-(3,4,5-trifluorophenyl)-4,5,6,7- tetrahydropyrazolo[l,5-a]pyridine-5-carboxamide (Example 5, 11.5 mg) as a white solid. 1H NMR (400MHz, CDC13) delta 8.21 (s, 1H), 7.56 (s, 1H), 7.41 – 7.26 (m, 2H), 4.27 – 4.14 (m, 1H), 4.07 (m, 1H), 3.73 – 3.54 (m, 2H), 3.36 (t, 2H), 3.25 – 3.08 (m, 2H), 2.84 – 2.72 (m, 1H), 2.60 – 2.39 (m, 3H), 2.34 – 2.21 (m, 1H). MS obsd. (ESI+) [(M+H)+]: 415
5908-62-3 1,1-Dioxo-isothiazolidine 642157, athiazolidine compound, is more and more widely used in various fields.
Reference£º
Patent; F. HOFFMANN-LA ROCHE AG; HOFFMANN-LA ROCHE INC.; HU, Taishan; SHEN, Hong; HAN, Xingchun; (45 pag.)WO2018/11100; (2018); A1;,
Thiazolidine – Wikipedia
Thiazolidine – ScienceDirect.com