摘要:
A process for the preparation of a chiral compound, in particular posaconazole, wherein the process comprises mixing and reacting the compounds of formula (I) Y3—NH2; of formula (IIa) 0=C═N—Y0 and/or of formula (IIb) and of formula (III) in a solvent in any order to obtain a reaction mixture containing a chiral compound of formula (IV) and/or formula (V).
摘要翻译:一种制备手性化合物,特别是泊沙康唑的方法,其中该方法包括将式(I)Y 3 -NH 2的化合物混合并反应; 的式(IIa)0 = C = N-Y0和/或式(IIb)和式(III)的化合物在溶剂中以任何顺序获得含有式(IV)和/或式 (V)。
摘要:
The present invention relates to the use of a compound having the formula (II) for the preparation of a compound having the formula (V). Methods of preparing the compound having the formula (V) using the compound having the formula (II) are also described. Individual reaction steps as well as intermediates are additionally claimed.
摘要:
A process for the preparation of a chiral compound, in particular posaconazole, wherein the process comprises mixing and reacting the compounds of formula (I) Y3—NH2; of formula (IIa) 0=C═N—Y0 and/or of formula (IIb) and of formula (III) in a solvent in any order to obtain a reaction mixture containing a chiral compound of formula (IV) and/or formula (V).
摘要翻译:一种制备手性化合物,特别是泊沙康唑的方法,其中该方法包括将式(I)Y 3 -NH 2的化合物混合并反应; 式(IIa)的化合物0 = C = N-Y0和/或式(IIb)和式(III)的化合物在溶剂中以任何顺序得到含有式(Ⅳ)和/或式 (V)。
摘要:
The present invention relates to an improved process for the production of prostaglandins and prostaglandin analogs. In particular, this invention relates to the production of prostaglandins of the PGF2α-series, including latanoprost, travoprost, and bimatoprost, which are active pharmaceutical ingredients used for the reduction of elevated intra-ocular pressure in patients with glaucoma and ocular hypertension.
摘要:
The present invention relates to the use of a compound having the formula (II) for the preparation of a compound having the formula (V). Methods of preparing the compound having the formula (V) using the compound having the formula (II) are also described. Individual reaction steps as well as intermediates are additionally claimed.
摘要:
The present invention relates to a process for the purification of crude bimatoprost to obtain pure bimatoprost comprising a chromatography, preferably a chromatography using an achiral stationary phase and an eluent comprising an alcohol and an apolar solvent; and crystallisation of the product obtained the chromatography to obtain pure bimatoprost.
摘要:
The present invention relates to a process for the purification of crude bimatoprost to obtain pure bimatoprost comprising a chromatography, preferably a chromatography using an achiral stationary phase and an eluent comprising an alcohol and an apolar solvent; and crystallization of the product obtained the chromatography to obtain pure bimatoprost.
摘要:
This invention relates to processes and intermediates for the stereoselective alkylation of carbonyl groups. The invention in particular allows the stereoselective preparation of the antidepressant drug escitalopram. It has been found that boric or boronic acid derivatives are useful bridging elements for the attachment of a chiral group to a compound containing a carbonyl group to be alkylated. The said borates and boronates are thus useful in a process for the asymmetric alkylation of a carbonyl group in a compound containing a carbonyl group and an anchor group capable of reacting with a boric or boronic acid derivative. The asymmetric alkylation can be carried out by admixing the compound containing a carbonyl group to be alkylated and the anchor group capable of reacting with a boric or boronic acid derivative with a boric or boronic acid derivative, adding a chiral alcohol, and adding an organometallic compound. After the alkylation reaction, the borate and boronate can be easily removed by hydrolysis.
摘要:
This invention relates to processes and intermediates for the stereoselective alkylation of carbonyl groups. The invention in particular allows the stereoselective preparation of the antidepressant drug escitalopram. It has been found that boric or boronic acid derivatives are useful bridging elements for the attachment of a chiral group to a compound containing a carbonyl group to be alkylated. The said borates and boronates are thus useful in a process for the asymmetric alkylation of a carbonyl group in a compound containing a carbonyl group and an anchor group capable of reacting with a boric or boronic acid derivative. The asymmetric alkylation can be carried out by admixing the compound containing a carbonyl group to be alkylated and the anchor group capable of reacting with a boric or boronic acid derivative with a boric or boronic acid derivative, adding a chiral alcohol, and adding an organometallic compound. After the alkylation reaction, the borate and boronate can be easily removed by hydrolysis.
摘要:
The invention relates to a new process for the production of intermediates for the synthesis of caephalosporin of formula (I) wherein R1, R2 and R3, independently of one another, are alkyl, alkenyl, aryl, hydroxy(C1-6)alkyl, carbamoyl-(C1-6)alkyl, amino-(C1-6)alkyl, acylamino-(C1-6)alkyl or carboxy(C1-6)alkyl, or wherein R2 and R3 together with the adjacent nitrogen atom, form an alicyclic 5- to 8-membered heterocyclic ring, and R1 signifies alkyl, alkenyl or aryl. The process according to the invention is notable in that the formation of undesired by-products, especially Δ2-analogous compounds of formula (I), is greatly reduced.