21535-44-4Relevant articles and documents
Novel method of preparing Epinastine
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, (2020/05/13)
The present invention relates to a novel manufacturing method for synthesizing an anti-histamine pharmaceutical medicine, epinastine. The novel manufacturing method for synthesizing epinastine according to the present invention has fewer synthesizing steps than a conventional epinastine manufacturing method, and is a safe synthesis method, thereby being expected to be used for inexpensively synthesizing the anti-histamine pharmaceutical medicine, epinastine by the manufacturing method, and supplying the same to the market.COPYRIGHT KIPO 2020
Preparation method of 6-Chloromethylmorphanthridine
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Paragraph 0031; 0034-0035; 0038; 0041; 0043; 0045; 0047, (2017/11/04)
The invention belongs to the technical field of medicinal chemistry and particularly relates to a preparation method of 6-Chloromethylmorphanthridine. The preparation method comprises the steps that under the action of concentrated sulfuric acid, N-[2-(phenyl methyl)phenyl]-2-chloroacetamide is taken as the raw material, a complex compound of a trifluoromethanesulfonic acid rare earth compound and dimethyl sulfoxide is taken as the catalyst, and dehydration cyclization is performed to prepare the 6-Chloromethylmorphanthridine. According to the preparation method of the 6-Chloromethylmorphanthridine, the complex compound of the trifluoromethanesulfonic acid rare earth compound and the dimethyl sulfoxide is taken as the catalyst, a better effect is realized, the pollution is small, the preparation method is environment-friendly, and recyclable production is realized.
Stereoselective synthesis of (R)-(-)-mianserin
Pawlowska,Czarnocki,Wojtasiewicz,Maurin
, p. 3335 - 3342 (2007/10/03)
(14bR)-2-Methyl-1,2,3,4,10,14b-hexahydrodibenzo[c,f]pyrazino[1,2-a]azepine, (R)-(-)-mianserin 1a was synthesised in several steps in good enantiomeric purity with the use of (S)-(-)-α-methylbenzylamine 5. The absolute configuration was assigned on the bas