161596-47-0Relevant articles and documents
Novel series of highly potent non-peptide growth hormone secretagogues with improved bioavailability
Ishige, Hirohide,Ishiyama, Nobuo,Mimura, Mitsuo,Hayashida, Mitsuo,Okuno, Tadashi,Ukai, Kiyoharu,Kiyofuji, Takeshi,Yoneda, Yasuo,Tauchi, Shinji,Aoyama, Akinori,Inoguchi, Kiyoshi
, p. 561 - 566 (2006)
The discovery and the SAR of acylproline derivatives as highly potent growth hormone secretagogues (GHSs) with good oral bioavailability are described. One representative compound, N-[3-(2,2-dimethylpropylamino)-2-hydroxypropyl]-2(R)-[1-(2,2-dimethylpropionyl)pyrrolidine-2(S)- carbonylamino]-3-naphthalen-2-ylpropionamide (4e), showed potent GHS activity (ED50=1 nM) and good oral bioavailability (BA=33.2%). Moreover, the optically pure N-[3-(2,2-dimethylpropylamino)-2(S)-hydroypropyl]-2(R)-[1-(2,2-dimethylpropionyl)pyrrolidine-2(S)-carbonylamino]-3-naphthalen-2- ylpropionamide ((2S)-4e) showed a good metabolic stability against in vitro clearance (human liver microsome) with potent GHS activity.
Preparation method of (S)-glycidyl phthalimide
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Paragraph 0089; 0090, (2020/03/29)
The invention provides a preparation method of (S)-glycidyl phthalimide (II). Phthalimide (III) and (S)-1-substituted epoxypropane (IV) which are used as raw materials react under the action of a catalyst to generate 2-((S)-3-substituted-2-hydroxypropyl)isoindoline-1,3-dione (V), and the 2-((S)-3-substituted-2-hydroxypropyl)isoindoline-1,3-dione (V) is subjected to a cyclization reaction to obtainthe (S)-glycidyl phthalimide (II). The method has the advantages of cheap and easily available raw materials, easiness in realization of reaction conditions, low cost, short reaction route, simplicity in operation, simplicity in post-treatment, few side reactions, high yield and high purity of the target product, and suitableness for industrial production.
Preparation method of rivaroxaban intermediate
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Paragraph 0057-0065, (2020/05/02)
The invention provides a preparation method of a rivaroxaban intermediate. The preparation method comprises: (1) carrying out a reaction on a compound A and a compound B in an alcohol or an alcohol aqueous solution to obtain a compound C; and (2) reacting the compound C with N,N'-carbonyldiimidazole in a reaction solvent selected from acetonitrile or butyronitrile to obtain a reaction solution containing a compound D, and performing cooling crystallization to obtain a compound D.
Low-cost and high-purity S-glycidyl phthalimide synthesis method
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Paragraph 0062; 0063; 0064; 0065; 0066, (2019/03/10)
The invention relates to a low-cost and high-purity S-glycidyl phthalimide synthesis method, which comprises: carrying out a substitution reaction on potassium phthalimide and R-2,2-disubstituted-4-halomethyl-1,3-dioxolane to generate N-(S-2,2-disubstituted-1,3-dioxolane-4-)methylphthalimide, carrying out a ketone (aldehyde) removing ring-opening reaction to produce N-2-S-hydroxy-3-halogenated n-propyl phthalimide, and finally carrying out an elimination reaction to remove hydrogen halide so as to generate S-glycidyl phthalimide, wherein S-glycidyl phthalimide is the key intermediate for the preparation of rivaroxaban. According to the present invention, the synthesis method has advantages of inexpensive and easily-available raw materials, high stability, high reaction selectivity and highproduction efficiency, and the obtained S-glycidyl phthalimide has advantages of low cost and high purity, and is favorable for the industrial production of high-purity rivaroxaban.
A novel homochiral metal-organic framework with an expanded open cage based on (: R)-3,3′-bis(6-carboxy-2-naphthyl)-2,2′-dihydroxy-1,1′-binaphthyl: synthesis, X-ray structure and efficient HPLC enantiomer separation
Tanaka, Koichi,Kawakita, Tomohiro,Morawiak, Maja,Urbanczyk-Lipkowska, Zofia
, p. 487 - 493 (2019/01/21)
A new homochiral metal-organic framework (MOF) with an expanded open cage based on the (R)-3,3′-bis(6-carboxy-2-naphthyl)-2,2′-dihydroxy-1,1′-binaphthyl ligand was synthesized and utilized as a novel chiral stationary phase for high-performance liquid chromatography. Twelve racemates including sec-alcohols, sulfoxides, epoxides, lactone, 1,3-dioxolan-2-one, and oxazolidinone were used as analytes for evaluating the separation properties of the chiral-MOF-packed column. Experimentally, the homochiral MOF offered good molecular recognition ability, which suggests good prospects for the application of chiral MOFs as stationary phases for enantioseparation.
Preparation method of S-N-glycidol phthalimide
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Paragraph 0075; 0076; 0077, (2018/09/12)
The invention relates to a preparation method of S-N-glycidol phthalimide. According to the method, recyclable anion exchange resin is used for catalyzing reaction in the preparation process of the S-N-glycidol phthalimide, so that the production cost is reduced; the emission requirements are reduced; the problem that a phase transfer catalyst is difficultly removed and influences the quality of aproduct is solved; the reaction time is further reduced; the special requirements on equipment caused by application of potassium tert-butoxide are avoided; the production cost is reduced; the preparation method is suitable for industrial production.
Preparation method of rivaroxaban intermediate
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Paragraph 0086; 0087; 0088, (2018/09/12)
The invention relates to a preparation method of rivaroxaban intermediate S-N-glycidyl phthalimide. According to the method, catalytic reaction is carried out by using recoverable aluminum oxide in apreparation process of S-N-glycidyl phthalimide, so that the production cost is reduced, the emission requirement is reduced, the problem that the product quality is affected by a phase transfer catalyst difficultly eliminated is solved, the reaction time is further shortened, the special requirement on equipment caused by the use of potassium tert-butanolate is avoided, the production cost is reduced, and therefore, the preparation method is particularly suitable for industrial production.
Process for the preparation of linezolid
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Page/Page column 16, (2017/05/31)
The present invention relates to an improved process for the preparation of Linezolid. More specifically, the present invention relates to an improved process for preparing (S)—N-[[3-[3-fluoro-4-[4-morpholinyl]phenyl]-2-oxo-5-oxazolidinyl]methyl] phthalimide and (S)-glycidyl phthalimide intermediates, which are used in the preparation of Linezolid.
Pilot scale process development of SL65.0102-10, an N-diazabicyclo[2.2.2]-octylmethyl Benzamide
Lienard, Philippe,Gradoz, Philippe,Greciet, Hélène,Jegham, Samir,Legroux, Didier
, p. 18 - 22 (2017/11/27)
The process development and improvements for route selection, adapted to large scale for the pilot-scale preparation of SL65.0102-10, an N-diazabicyclo[2.2.2]-octylmethyl benzamide, a 5-HT3 and 5-HT4 receptor active ligand for the treatment of neurological disorders such as cognition impairment, are described in this article. Notable steps and enhancements are compared to the original route, including the improvement of a chiral epoxide synthesis by shortening the number of chemical steps, the deprotection of a quaternary ammonium salt, and the redesign of the final amidification coupling to avoid chromatography.
AN IMPROVED PROCESS FOR THE PREPARATION OF LINEZOLID
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, (2017/11/14)
The present invention relates to an improved process for the preparation of Linezolid. More specifically, the present invention relates to an improved process for preparing(S)-N-[[3-[3-fluoro-4-[4-morpholinyl]phenyl]-2-oxo-5-oxazolidinyl]methyl] phthalimide and (S)-glycidyl phthalimide intermediates, which are used in the preparation of Linezolid.