摘要:
The present invention relates to a process for the synthesis of (S)-2'[2-1-(methyl-2-piperidyl) ethyl] cinnamanilide (I) or salts or pharmaceutically acceptable prodrugs thereof.
摘要:
The invention encompasses processes for preparing intermediates, such as R-modafinic acid or (R)-C 1-2 alkyl ester, of modafinic acid, and the conversion of the intermediates to armodafinil.
摘要:
A chiral particulate material and method of making the same are provided. The material includes a fibrous protein or chiral synthetic polymer, optionally crosslinked, organized into a multilayered chiral structure including nanoscale chiral pores or channels. The particles are useful for performing chiral separations, including in chromatographic applications.
摘要:
The present invention relates to novel chiral resolving agents and a process for resolution of racemic organic acids and their derivatives of the formula (+, -)-R 1 R 2 CHCOOR3 with Cis- (1S,4S)-4 [3,4-dichlorophenyl]-1,2,3,4-tetrahydro-N-methyl-1-naphthaloneamine and its Cis-(lR,4R)-isomer as well as Trans-(1S,4R)-4[3,4-dichlorophenyl]-1,2,3,4-tetrahydro-N-methyl-1-naphthaloneamine and its Trans-(1R,4S)-isomer.
摘要:
Die vorliegende Erfindung betrifft ein Verfahren zur Auftrennung stereoisomerer Verbindungen, die wenigstens eine Alkohol- und oder Aminogruppe aufweisen, durch destillative Trennung in Gegenwart eines chiralen Diskriminators, bei dem es sich um einen Metailkomplex handelt, der wenigstenst einen Liganden aufweist, der sich von einer Verbindung der allgemeinen Formel (I) ableitet.
摘要:
A method for the determination of the enantiomeric composition of a chiral compound comprising : a) derivatising said chiral compound with a enantiomerically and diastereomerically pure compound of general formula (I) and b) analysing the resulting mixture by an analytic technique . Formula (I ), wherein Ar is an optionally substituted aromatic or heteroaromatic group
摘要:
The present invention relates to a process for optically resolving eszopiclone, comprising chiral chromatography. Preferably the process comprises a multi-column continuous process or a simulated moving bed process. Preferably the stationary phase used in the chiral chromatography process comprises an amylose or cellulose derivative of tris (3,5-dimethylphenyl carbamate), or an amylose derivative of tris-α-methylbenzylcarbamate. The process of the present invention has the advantage that it is high yielding and can be carried out on an industrial scale. The present invention also provides eszopiclone, or a pharmaceutically acceptable salt thereof, obtained by the chiral chromatography process. The eszopiclone or salt thereof is suitable for use as a medicament, for example, for the treatment of anxiety or insomnia.
摘要:
The present invention is directed to a process for the isolation of the enantiomeric forms of modafinil with high enantiomeric purity and high overall yields by means of a continuous chromatographic process.
摘要:
The invention relates to novel cyclodextrin derivatives which are characterised in that at least one of the hydrogen atoms borne by the carbon atoms in position 3 and/or 5 and/or 6 of the glucopyranoside units (or glucose) contained in the cyclodextrin is substituted by a methanol group, i.e. by a tetravalent carbon bearing a secondary hydroxyl function, the inventive derivatives having general formula (I) wherein n is equal to 0, 1 or 2 and at least one of the R3 radicals represents a methanol group R1-C(OH)-R2.