摘要:
A stereoselective process for preparing 7-[(E)-t-butyloxyiminomethyl]-camptothecin (also known as gimatecan) is herein disclosed. With the addition of further dissolution and precipitation steps carried out in appropriate different solvent mixtures, four new crystalline forms of gimatecan are also obtainable by using the same stereoselective process.
摘要:
A stereoselective process for preparing 7-[(E)-t-butyloxyiminomethyl]-camptothecin (also known as gimatecan) is herein disclosed. With the addition of further dissolution and precipitation steps carried out in appropriate different solvent mixtures, four new crystalline forms of gimatecan are also obtainable by using the same stereoselective process.
摘要:
A stereoselective process for preparing 7-[(E)-t-butyloxyiminomethyl]-camptothecin (also known as gimatecan) is herein disclosed. With the addition of further dissolution and precipitation steps carried out in appropriate different solvent mixtures, four new crystalline forms of gimatecan are also obtainable by using the same stereoselective process.
摘要:
A stereoselective process for preparing 7-[(E)-t-butyloxyiminomethyl]-camptothecin (also known as gimatecan) is herein disclosed. With the addition of further dissolution and precipitation steps carried out in appropriate different solvent mixtures, four new crystalline forms of gimatecan are also obtainable by using the same stereoselective process.
摘要:
A stereoselective process for preparing 7-[(E)-t-butyloxyiminomethyl]-camptothecin (also known as gimatecan) is herein disclosed. With the addition of further dissolution and precipitation steps carried out in appropriate different solvent mixtures, four new crystalline forms of gimatecan are also obtainable by using the same stereoselective process.
摘要:
A stereoselective process for preparing 7-[(E)-t-butyloxyiminomethyl]-camptothecin (also known as gimatecan) is herein disclosed. With the addition of further dissolution and precipitation steps carried out in appropriate different solvent mixtures, four new crystalline forms of gimatecan are also obtainable by using the same stereoselective process.
摘要:
The invention relates to a process for the preparation of thalidomide (I) comprising the reaction between glutamine (II) and a phthaloylating agent, preferably phthalic anhydride, to give N-phthaloyl-glutamine, which is directly transformed in thalidomide.
摘要:
The invention relates to crystalline Cefdinir ammonium salt of formula (I) and to a process for the preparation thereof. This salt is particularly advantageous in that it allows to prepare highly pure Cefdinir.
摘要:
The invention relates to two novel crystalline form of Topotecan hydrochloride (Ia) Herein referred to as forms α and β, characterized by high purity and whose preparation is advantageous from the industrial point of view. Form α can be in fact conveniently prepared starting from 10-hydroxy-camptothecin, whereas form β can be prepared starting from form α.
摘要:
Disclosed is a crystalline form of irinotecan hydrochloride (I) and processes for the preparation thereof from crude irinotecan hydrochloride or another polymorphic form of irinotecan. Said crystalline form is particularly suitable for industrial use, because it is easily filtered and possesses characteristics of high stability and purity.