A | B | C | D | E | F | G | H | CH | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9
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Other names | Mabuterolum; PB 868Cl |
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Formula | C13H18ClF3N2O |
Molar mass | 310.75 g·mol−1 |
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Mabuterol is a selective β2 adrenoreceptor agonist.[1][2]
Synthesis
The halogenation of 2-(Trifluoromethyl)aniline (1) with iodine and sodium bicarbonate resulted in 2-Amino-5-Iodobenzotrifluoride (2). Protection with acetic anhydride followed by nucleophilic aromatic displacement with copper(I)cyanide gave N-acetamide (3). Hydrolysis of the nitrile and the protecting group gave 4-amino-3-(trifluoromethyl)benzoic acid (4). Halogenation with chlorine gave 4-Amino-3-Chloro-5-(Trifluoromethyl)Benzoic Acid (5). Halogenation of the acid with thionyl chloride gave 4-Amino-3-chloro-5-(trifluoromethyl)benzoylchloride (6). Treatment with diethyl malonate gave the acetophenone and hence 1-ethanone (7). Halogenation with bromine in acetic acid led to 1--2-bromoethanone (8). Treatment with tert-butylamine yielded 1--2-(tert-butylamino)ethenone, CID:13355601 (9). Reduction of the ketone with sodium borohydride completed the synthesis of Mabuterol (10).
See also
- Clenbuterol
- Cimaterol
- Trantinterol (regioisomer)
References
- ^ Osada E, Murai T, Ishizaka Y, Sanai K (1984). "Pharmacological studies of mabuterol, a new selective beta 2-stimulant. II: Effects on the cardiovascular system and smooth muscle organs". Arzneimittel-Forschung. 34 (11A): 1641–1651. PMID 6152157.
- ^ Akahane K, Furukawa Y, Ogiwara Y, Haniuda M, Chiba S (July 1989). "Beta-adrenoceptor blocking effects of a selective beta 2-agonist, mabuterol, on the isolated, blood-perfused right atrium of the dog". British Journal of Pharmacology. 97 (3): 709–716. doi:10.1111/j.1476-5381.1989.tb12007.x. PMC 1854580. PMID 2474351.
- ^ Krüger G, Keck J, Noll K, Pieper H (1984). "Synthesis of further amino-halogen-substituted phenyl-aminoethanols". Arzneimittel-Forschung. 34 (11A): 1612–24. PMID 6152154.
- ^ BE 808743, Engelhardt G, Keck J, "Aminophenyl ethanolamines and oxazolidines - having analgesic, uterus spasmolytic and anti-spasmodic activity on cross-striped muscle structure", issued 1974, assigned to Thomae GmbH.
- ^ US 4119710, issued 1978, assigned to Boehringer Ing.
- ^ DE 2351281, assigned to Thomae GmbH.
- ^ Tu Y, Zhong J, Wang H, Pan J, Xu Z, Yang W, Luo Y (November 2016). "Synthesis of stable isotope labeled D9 -Mabuterol, D9 -Bambuterol, and D9 -Cimbuterol". Journal of Labelled Compounds & Radiopharmaceuticals. 59 (13): 546–551. doi:10.1002/jlcr.3446. PMID 27739098.
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