摘要:
[PROBLEMS] To provide an industrially advantageous process for production of (3R,4S)-3-cyclopropylaminomethyl-4- fluoropyridine or an enantiomer thereof, which is a useful intermediate for the production of a 10-(3-cyclopropylaminomethyl-4-fluoropyrrolidinyl)- pyridobenzoxazinecarboxylic acid derivative which is a novel antibacterial agent. [MEANS FOR SOLVING PROBLEMS] A novel substance (3R,4S)-1-protected-3-cyclopropylcarbamoyl-4-hydroxy- pyrrolidine or an enantiomer thereof having a high optical purity can be produced by performing the highly stereoselective asymmetric hydrogenation of a 1-protected-4-alkoxycarbonyl-3-oxopyrrolidine, performing the ester hydrolysis, and then performing the amidation with cyclopropylamine to produce a crude crystal, and recrystallizing the crude crystal. By using this compound as an intermediate, it becomes possible to establish an industrial production process for producing (3R,4S)-3-cyclopropylaminomethyl-4- fluoropyrrolidine having a high quality or an enantiomer thereof by means of simple procedures at a high purity and in a steady yield.
摘要:
Disclosed is a production intermediate for safely and efficiently producing an aminoacetylpyrrolidinecarbonitrile derivative. Specifically disclosed is a sulfonyloxyacetylpyrrolidine derivative represented by the following formula (1). [Chemical formula 1] (1) (In the formula, R1 represents an optionally substituted C 1 -C 6 alkyl group, an optionally substituted C 3 -C 6 cycloalkyl group, an optionally substituted arylmethyl group, an optionally substituted aromatic hydrocarbon group, an optionally substituted aromatic heterocyclic ring or an optionally substituted aliphatic heterocyclic ring; R2 represents CONH 2 or CN; and X represents CH 2 , CHF or CF 2 .)
摘要:
A process for resolving a compound in racemic form comprising the following steps is described: a) reacting a compound in racemic form with a resolving agent, b) forming a diastereoisomeric complex of the resolving agent and an enantiomer of interest, c} separating the enantiomer of interest from the obtained diastereoisomer, wherein such a process is characterized in that said resolving agent is a compound of Formula (I). A diastereoisomeric complex between the resolving agent of Formula (I) and the enantiomer of interest is also described. The process according to the invention allows acid and basic racemic mixtures to be separated.
摘要:
Disclosed are compounds having Formula (I) and the compositions and methods relating to these compounds, for treating or preventing a viral infection mediated at least in part by a virus in the Flaviviridae family of viruses, wherein A, R 2 , m, R, V, W, T, Z, R 1 , Y, and p are disclosed herein.
摘要:
The invention relates to the treatment of disorders or diseases mediated by LFA-1/ ICAM-1 molecular interaction. This is based on the use of novel chemical compounds capable of inhibiting said interaction, and more particularly, to pharmaceutical compositions containing these compounds.
摘要:
The present invention relates to novel salt forms of vildagliptin (LAF237), i.e. salt forms of (S)-1-[(3-hydroxy-1-adamantyl)amino]acetyl-2-cyano-pyrrolidine.
摘要:
The invention related to a novel process, novel process Steps and novel intermediates useful in the synthesis of pharmaceutically active Compounds, especially renin inhibitors, such as Aliskiren. Inter alia, the invention relates to a process for the manufacture of a Compound of the formula (III), wherein R, R 1 , R 2 , R 3 and PG are as defined in the specification, or a salt thereof, said manufacture comprising (preferably consisting in) reacting a Compound of the formula (I) with a reagent able to transform hydroxy into X where X is for example a leaving group.