132335-50-3Relevant academic research and scientific papers
ASYMMETRIC SYNTHESIS AND ABSOLUTE STEREOCHEMISTRY OF LY248686
Deeter, Jack,Frazier, Jeff,Staten, Gilbert,Staszak, Mike,Weigel, Leland
, p. 7101 - 7104 (1990)
Reduction of 3-(dialkylamino)-1-aryl-1-propanones with a 2 : 1 complex of (8) and lithium aluminum hydride (LAH) provided the corresponding 1,3-diaminoalcohols in high ee's (80-88percent).This process was developed and applied to the synthesis of LY248686 (1), a potent inhibitor of serotonin (5HT) and norepinephrine (NE) uptake.Absolute configurations have been established by single crystal x-ray analysis.
A method for preparing optically active 3-amino-1-propanol derivatives as an intermediate and a method for preparing (S)-duloxetine using the same
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Paragraph 0202-0204, (2016/12/01)
The present invention relates to a method for preparing optically active 3-AMNO1-propanol derivatives as an intermediate and a method for preparing (s)-duloxetine using the same. This method can obtain optically active 3-AMNO1-propanol with higher yield and optical purity (ee) than any other conventional methods. Using this as an intermediate compound, it is possible to manufacture duloxetine which is enantiomerically pure and has high optical purity (ee).(DD) Nisoxetine(EE) Duloxetine(CC) 3-amino-1-propanol(BB) Fluoxetine(AA) TomoxetineCOPYRIGHT KIPO 2015
A PROCESS FOR THE PREPARATION OF DULOXETIN AND NEW KEY INTERMEDIATES FOR USE THEREIN
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Page/Page column 18, (2008/12/06)
The present invention relates to a process for the preparation of duloxetin. ((S)-(+)-N-methyl-N-(3-(l-naρhthalenyloxy)-3-(2-thienyl)propanamine) of formula (I) and pharmaceutically acceptable salts thereof, said process comprising the steps of a) resolving racemic 3-(N-methyl-N-berizylamino)-1-(2-thienyl)-1-propanol of formula (II) with a D-phenylglycine derivative to obtain a compound of formula (IV); and b) reacting (S)-3-(N-methyl-N-ben2yIamino)-1-(2-thienyl)-1-propanol of formula (IV) with 1-fluoronaphthalene to yield (S)-N-methyl-N-benzyl-3-(1-naphthalenyloxy)-3-(2- thienyl)propanamine of formula (V), reacting the compound of formula (V) obtained with 1-chloroethyl chloroformate to yield duloxetin of formula (I), and if desired converting the duloxetin of formula (I) obtained into an acid addition salt thereof.
PROCESSES AND INTERMEDIATES FOR THE PREPARATION OF OPTICALLY ACTIVE 3-AMINO-1-(2-THIENYL)-1-PROPANOL DERIVATIVES
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Page 16, (2008/06/13)
Enantiomerically enriched 3-amino-1-(2-thienyl)-1-propanols of the fomulae (S)-I or (R)-I wherein R1 and R2 independently denote H, C1-6-alkyl, C5-7-cycloalkyl, aralkyl or aryl, were prepared by reducing a 3-amino-1-(2-thienyl)-1-propanone of the formula (II) wherein R1 and R2 are defined as above, using a hydrogen donor in the presence of a metal catalyst, an optically active nitrogen-containing ligand and optionally a base.
