摘要:
The present invention provides amorphous tacrolimus in a free drug particulate form. Also provided are methods for preparing amorphous tacrolimus, and a tablet containing amorphous tacrolimus.
摘要:
The invention provides a method for crystallization and purification of tacrolimus that includes the step of providing a combination of a macrolide and a polar solvent, dopolar aprotic solvent, or hydrocarbon solvent at pH of 7 or above. The invention also provides a novel crystalline form of tacrolimus.
摘要:
Provided is a method of purifying a macrolide, especially tacrolimus, that includes loading macrolide onto a bed of sorption resin and elting with a suitable eluent such as a combination of water and tetrahydrofuran.
摘要:
Provided is a method of purifying a macrolide, especially tacrolimus, that includes loading macrolide onto a bed of sorption resin and elting with a suitable eluent such as a combination of water and tetrahydrofuran.
摘要:
The present invention provides a fermentation process for producing lipstatin comprising the steps of: a) preparing a fermentation medium containing a lipstatin-producing microorganism comprising an oil and an assimilable carbon source, wherein the wt/wt ratio of oil and assimilable carbon source is regulated to achieve an optimal lipstatin biosynthesis by the microorganism; and b) feeding the fermentation medium with an emulsifier, wherein the emulsifier provides an optimal viscosity for the fermentation medium and optimal pH during the fermentation to permit fermentation for lipstatin production. The disclosed process also provides a process for extracting a lipstatin from a fermentation broth.
摘要:
The present invention provides a method of preparing and purifying echinocandin-type compounds, such as pneumocandin Bo, WF 11899A, and echinocandin B. These compounds are fermentation products that are used to prepare semi-synthetic products such as the antifungal products Caspofungin, Mycafungin, and Anidulafungin.
摘要:
Provided is a method of purifying a macrolide, especially tacrolimus, that includes loading macrolide onto a bed of sorption resin and eluting with a suitable eluent such as a combination of water and tetrahydrofuran.
摘要:
The present invention is directed to a process of converting lipstatin to orlistat by catalytic hydrogenation. The present invention further discloses novel crystalline solid orlistat forms, designated form I and form II and methods for their preparation.
摘要:
The present invention provides a method of preparing and purifying echinocandin-type compounds, such as pneumocandin Bo, WF 11899A, and echinocandin B. These compounds are fermentation products that are used to prepare semi-synthetic products such as the antifungal products Caspofungin, Mycafungin, and Anidulafungin.
摘要:
Provided is ascomycin that has a low level of an FK523 impurity, and pimecrolimus that has a low level of a 32-deoxy-32-epichloro-FK523 impurity, methods of preparing them, and the use of such pimecrolimus for preparing a pharmaceutical composition.