Researchers who often do experiments know that organic synthesis is a process of preparing more complex target molecules from simple raw materials through one or more chemical reactions. Generally, it requires fewer steps, and cheap raw materials. 59767-13-4, name is Setastine HCl, A new synthetic method of this compound is introduced below., Recommanded Product: 59767-13-4
1. The L-setastine hydrochloride can be synthesized by the SFC method. The Daicel chiral column setastine hydrochloride racemic (provided by Anhui Kelong medicine research institute) is used for chiral isomer separation by the Daicel preparation equipment, and its corresponding component is collected, so that pure optical isomers can be obtained by rotary evaporators. Column model for Daicel preparation equipment is CHIRALPAK AY-H (5 cm I.D.¡Á25 cm L.), and the mobile phase is CO2/EtOH/DEA=85/15/0.1 (v/v), and the flow rate is 100 g/min. The yield for the synthesis method is 40%, which means that 0.5 gram of L-setastine hydrochloride is obtained by adding 0.2 g of setastine hydrochloride racemic. The ee value is 98%, and [a]D20=-7.4 (c1.00, CH30H). NMR results were as follows: [0050] (1H)-NMR (DMSO-d6, delta (ppm)): 1.56-1.65 (4H), 1.82-1.87 (4H), 1.87 (3H), 3.17-3.37 (4H), 3.32 (2H), 3.60 (2H), 7.20-7.41 (9H). [0051] Meanwhile, 0.22 grams of D-setastine hydrochloride are obtained, which has the yield for generating D-setastine hydrochloride is 44%, and ee value thereof is 98.5%.
The synthetic route of 59767-13-4 has been constantly updated, and we look forward to future research findings.
Reference:
Patent; ANHUI QINGYUN PHARMACEUTICAL; Huang, Qingyun; Huang, Qingguo; Lou, Meixian; US2014/296517; (2014); A1;,
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