166410-05-5Relevant articles and documents
Stereoselective synthesis of (3S,4S)-tert-butyl-N-Boc-3-ethyl-4-hydroxy-l- prolinate and (3S,4R)-tert-butyl-N-Boc-3-ethyl-4-hydroxy-l-prolinate
Chabaud, Pauline,Pèpe, Gérard,Courcambeck, Jér?me,Camplo, Michel
, p. 3725 - 3731 (2005)
Diastereomers of tert-butyl-N-Boc-3-ethyl-4-hydroxy-l-prolinate 1 and 2 have been synthesized in six steps starting from readily available Boc-protected trans-4-hydroxy-l-proline. The key reactions in the synthesis are asymmetric reductions, firstly on th
Synthesis method of teneligliptin-related impurity
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, (2019/08/01)
The invention discloses a synthesis method of a teneligliptin-related impurity, optimal reaction steps and reaction conditions are screened out through a large number of experiments, the whole processis reasonable in design, high in operability, mild in reaction condition and high in yield, and industrial production can be realized. According to the invention, Boc-L-hydroxyproline and 1-(3-methyl-1-phenyl-5-pyrazolyl)piperazine are taken as raw materials, and the raw materials are subjected to seven-step reaction to synthesize the teneligliptin-related impurity, and the prepared teneligliptin-related impurity is high in purity, can provide a basis for quality control, safety and efficiency evaluation of teneligliptin, and has important application values.
SYNTHETIC SPHINGOLIPID-LIKE MOLECULES, DRUGS, METHODS OF THEIR SYNTHESIS AND METHODS OF TREATMENT
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Paragraph 00150, (2017/04/11)
Small molecules comprised of azacyclic constrained sphingolipid-like compounds and methods of their synthesis are provided. Formulations and medicaments are also provided that are directed to the treatment of disease, such as, for example, neoplasms, canc