摘要:
A process for preparing Anastrozole is provided. In the process the steps of a. combining 3,5-bis(2-cyanoisopropyl)toluene, a solvent selected from the group consisting of acetonitrile, dichloromethane and chlorobenzene, a brominating reagent selected from a group consisting of N-bromosuccinimide and 1,3-dibromo-5,5-dimethylhydantoin, and 2,2′-azobis(2-methylpropionitrile); b. heating; c. combining with 1,2,4-triazole, a solvent selected from a group consisting of N-methylpyrrolidine, dimethylformamide, mixtures of NMP and DMF, dimethylsulfoxide, mixtures of DMSO and toluene, acetone, ACN, and tetrahydrofuran, a base selected from a group consisting of NaOH, KOH, K2CO3, and Na2CO3, and 1,3-benzendiacetonitrile-5-(bromomethyl)-α,α,{acute over (α)},{acute over (α)}-tetramethyl, at a temperature below −20° C. are performed.
摘要翻译:提供了一种制备阿那曲唑的方法。 在这个过程中,a。 结合3,5-双(2-氰基异丙基)甲苯,选自乙腈,二氯甲烷和氯苯的溶剂,选自N-溴代琥珀酰亚胺和1,3-二溴-5,5-二氯苯的溴化试剂, 二甲基乙内酰脲和2,2'-偶氮双(2-甲基丙腈); b。 加热; C。 与1,2,4-三唑结合,选自N-甲基吡咯烷,二甲基甲酰胺,NMP和DMF的混合物,二甲基亚砜,DMSO和甲苯的混合物,丙酮,ACN和四氢呋喃的溶剂,选自 由NaOH,KOH,K 2 CO 3和Na 2 CO 3组成的组,和1,3-苯撑二乙腈-5-(溴甲基)-α,α,(急性(α)},{急(α)} - 低于-20℃。
摘要:
A process for preparing Anastrozole is provided. In the process the steps of a. combining 3,5-bis (2-cyanoisopropyl)toluene, a solvent selected from the group consisting of acetonitrile, dichloromethane and chlorobenzene, a brominating reagent selected from a group consisting of N-bromosuccinimide and 1,3-dibromo-5,5-dimethylhydantoin, and 2,2′-azobis(2-methylpropionitrile); b. heating; c. combining with 1,2,4-triazole, a solvent selected from a group consisting of N-methylpyrrolidine, dimethylformamide, mixtures of NMP and DMF, dimethylsulfoxide, mixtures of DMSO and toluene, acetone, ACN, and tetrahydrofuran, a base selected from a group consisting of NaOH, KOH, K2CO3, and Na2CO3, and 1,3-benzendiacetonitrile-5-(bromomethyl)-α,α,{acute over (α)},{acute over (α)}-tetramethyl, at a temperature below −20° C. are performed.
摘要翻译:提供了一种制备阿那曲唑的方法。 在这个过程中,a。 结合3,5-双(2-氰基异丙基)甲苯,选自乙腈,二氯甲烷和氯苯的溶剂,选自N-溴代琥珀酰亚胺和1,3-二溴-5,5-二氯苯的溴化试剂, 二甲基乙内酰脲和2,2'-偶氮双(2-甲基丙腈); b。 加热; C。 与1,2,4-三唑组合,选自N-甲基吡咯烷,二甲基甲酰胺,NMP和DMF的混合物,二甲基亚砜,DMSO和甲苯的混合物,丙酮,ACN和四氢呋喃的溶剂,选自 由NaOH,KOH,K 2 CO 3 3和Na 2 CO 3 3组成的组和1,3 - 苄基乙腈-5-(溴甲基)-α,α,α,α-四甲基,在低于-20℃的温度下进行。
摘要:
A process for preparing Anastrozole is provided. In the process the steps of a. combining 3,5-bis(2-cyanoisopropyl)toluene, a solvent selected from the group consisting of acetonitrile, dichloromethane and chlorobenzene, a brominating reagent selected from a group consisting of N-bromosuccinimide and 1,3-dibromo-5,5-dimethylhydantoin, and 2,2′-azobis(2-methylpropionitrile); b. heating; c. combining with 1,2,4-triazole, a solvent selected from a group consisting of N-methylpyrrolidinone, dimethylformamide, mixtures of NMP and DMF, dimethylsulfoxide, mixtures of DMSO and toluene, acetone, ACN, and tetrahydrofuran, a base selected from a group consisting of NaOH, KOH, K2CO3, and Na2CO3, and 1,3-benzendiacetonitrile-5-(bromomethyl)-α,α,{acute over (α)},{acute over (α)}-tetramethyl, at a temperature below −20° C. are performed.
摘要翻译:提供了制备阿那曲唑的方法。 在这个过程中,a。 结合3,5-双(2-氰基异丙基)甲苯,选自乙腈,二氯甲烷和氯苯的溶剂,选自N-溴代琥珀酰亚胺和1,3-二溴-5,5-二氯苯的溴化试剂, 二甲基乙内酰脲和2,2'-偶氮双(2-甲基丙腈); b。 加热; C。 与1,2,4-三唑组合,选自N-甲基吡咯烷酮,二甲基甲酰胺,NMP和DMF的混合物,二甲基亚砜,DMSO和甲苯的混合物,丙酮,ACN和四氢呋喃的溶剂,选自 由NaOH,KOH,K 2 CO 3和Na 2 CO 3组成的组,和1,3-苯撑二乙腈-5-(溴甲基)-α,α,(急性(α)},{急(α)} - 低于-20℃。
摘要:
The present invention provides a method of preparing norelgestromin or norgestimate by reacting the corresponding 3-oxosteroid precursor with hydroxylamine HCl and a base to obtain a reaction mixture forming norelgestromin or norgestimate; monitoring the anti/syn ratio of the norelgestromin or norgestimate produced in the reaction mixture; adding a base to the reaction mixture to neutralize acidity in the reaction mixture when a desired anti/syn ratio is detected; and isolating the norelgestromin or norgestimate. The present invention also provides a process allowing a control of the formation of the anti isomer and syn isomer of norelgestromin or norgestimate by reacting the corresponding 3-oxosteroid precursor with hydroxylamine HCl and a base to obtain a reaction mixture forming norelgestromin or norgestimate; regulating the acidity of the reaction mixture to adjust the anti/syn ratio of the norelgestromin or norgestimate produced in the reaction mixture; adding a base to the reaction mixture to neutralize acidity in the reaction mixture when a desired anti/syn ratio is detected; and isolating the norelgestromin or norgestimate.
摘要:
The present invention provides a new method of producing high quality idarubicin aglycone from 4-protected demethoxydaunomycinones such as 4-demethoxydaunomycinone-4-triflate.
摘要:
Provided are processes for the preparation of lyophilized pharmaceutically acceptable salts of pemetrexed diacid, in particular, pemetrexed disodium salt, directly from pemetrexed diacid or salts thereof, i.e., without isolating the obtained pemetrexed salt prior to lyophilizing it.
摘要:
Provided are crystalline forms of N-[4-[2-(2-amino-4,7-dihydro-4-oxo-1H-pyrrolo[2,3-d]pyrimidin-5-yl)ethyl]benzoyl]-L-glutamic acid, pemetrexed diacid, and processes for the preparation thereof.
摘要:
Provided are processes for the preparation of lyophilized pharmaceutically acceptable salts of pemetrexed diacid, in particular, pemetrexed disodium salt, directly from pemetrexed diacid or salts thereof, i.e., without isolating the obtained pemetrexed salt prior to lyophilizing it.