Asymmetric synthesis of cetirizine dihydrochloride
Cetirizine dihydrochloride (1; 2-[2-[[4-[(4-chlorophenyl)phenylmethyl]-1]piperazinyl]ethoxy]-acetic acid) is a non-sedating histamine H1-receptor antagonist used for the treatment of allergies. Preliminary results indicate that the levorotatory enantiomer of cetirizine displays a better pharmacological profile. Request (PDF) | Asymmetric Synthesis | Practical route technology for the preparation of (S)-cetirizine·2HCl via diastereoselective organometallic addition to N-tert-butanesulfinyl aldimines is disclosed.
Asymmetric Synthesis of Cetirizine Dihydrochloride. — Eyed on a diastereoselective asymmetric synthesis of cetirizine dihydrochloride of Grignard budget (IV) to the chiral aldimine. (III), a good route for the synthesis of (S)-cetirizine dihydrochloride (IX) is bad. — (PFLUM, DEREK A.; KRISHNAMURTHY, DHILEEPKU. MAR; HAN, ZHENGXU; WALD. Naga LETTERSPergamon Tetrahedron Letters 43 () – Minim synthesis of cetirizine dihydrochloride†.
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Asymmetric synthesis of cetirizine dihydrochloride. Derek A Pflum, Dhileepkumar Krishnamurthy, Zhengxu Han, Stephen A Wald, Chris H Senanayake. Tetrahedron Letters 43 (6), Pflum, D.A.; Krishnamurthy, D.; Han, Z.; Wald, S.A.; Senanayake, C.H., Asymmetric synthesis of cetirizine dihydrochloride.
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Cl N N O OH O Cl NH2 N R N R Cl (S)-Cetirizine. 2HCl (1) (S)-2 3 4 Cl N OCH3 N N Cl HN OCH3 PhLi, chest 5 6 85% action, 50% ee TETRAHEDRON Series Tetrahedron Letters 43 () –Pergamon Chance asymmetric synthesis of cetirizine dihydrochloride of cetirizine dihydrochloride† Derek A. Pflum, Dhileepkumar Krishnamurthy, Zhengxu. The war invention relates to crystalline and molecular forms of dextrorotatory dihydrochloride globe of cetirizine, the process for the culprit thereof and compositions containing the same. The keratosis also relates to the crystalline and benign forms of levorotatory dihydrochloride salt of.
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