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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 대한약학회 Archives of pharmacal research : a publication of the Pharmaceutical Society of Korea Archives of pharmacal research : a publication of the Pharmaceutical Society of Korea 제23권 제3호
- 발행연도
- 2000.1
- 수록면
- 226 - 229 (4page)
이용수
초록· 키워드
오류제보하기
To obtain the standard compounds of metoprolol for a pharmacokinetic study, a convenient synthetic procedure to prepare enantiomers of metoprolol (3a) and its major metaboites, 2-4-(2-hydroxy-3-isopropylamino)propoxyphenylathanol (3b) and 4-(2-hydroxy-3- isopropylamino) pro-poxyphenylacetic acid (4), was developed from their respective starting materials, 4-(2-methoxyethyl)phenol (1a), 4-(2-hydroxyethyl)phenol (1b) and methyl 4-hydroxyphenylacetate (1c). These phenolic compounds (1a, b, c) were converted in situ to their corresponding phenoxides with sodium hydroxide treatment followed by (R)- or (S)-epichlorohydrin treatment. The resulting epoxides 2 were transformed to 3 through reaction with isopropylamine. Ester 3c was hydrolyzed to the metabolite 4. Measured using the HPLC method on chiral column without any derivatization, the optical purity of enantiomers of metoprolol and o-demethylated metabolite 3b ranged between 96-99 ％ ee and that of enantiomers of carboxylic acid metabolite 4 ranged 91％ ee.
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