Abstract:
The present invention provides a method for inverting the 2’-hydroxy position of selected taxanes. The method includes protecting the 2’ hydroxyl group of a first selected taxane with a hydroxyl protecting group, such as a tosyl group, a mesyl group or a nosyl group. The protected taxane compound is then converted to an oxazole compound having an oxazole ring. The oxaxole ring is then opened by an appropriate process, such as by hydrolyzing the oxaxole compound thereby to form an intermediate compound, which is then converted to a second taxane. The intermediate compound may be an anime salt that is treated with a base to form the second taxane. The method contemplated by be used to convert 2’epi paclitaxel into paclitaxel. Alternatively, the method may be used to convert paclitaxel into 2’epi paclitaxel. The present invention also relates to novel compounds and intermediates formed by the process.
Abstract:
The present invention is broadly directed to novel compounds useful for the synthesis of biologically active compounds, including taxane derivatives, and convergent processes for the preparation of these taxane derivatives and their intermediates.
Abstract:
The present application discloses an acid labile lipophilic molecular conjugate of cancer chemotherapeutic agents and methods for reducing or substantially eliminating the side effects of chemotherapy associated with the administration of a cancer chemotherapeutic agent to a patient in need thereof.
Abstract:
The present invention is broadly directed to novel compounds useful for the synthesis of biologically active compounds, including taxane derivatives, and convergent processes for the preparation of these taxane derivatives and their intermediates.
Abstract:
The present application discloses new taxane analogs, intermediates and methods for producing them. The present application is also directed to pharmaceutical formulations comprising abeo-taxanes and methods of treating cancer with the abeo-taxanes.
Abstract:
The present invention relates to novel taxane analogues, processes of making the novel taxane analogues, compositions containing the novel taxane analogues, and their use in treating cancer and neurodegenerative disorders. In some embodiments, the taxane analogues are represented by the generic structure of formula (I) : wherein R 1 , R 2 ,R 3 and A are defined herein; and esters especially pro-drugs thereof wherein one or more of the hydroxy! groups is esterified to form an in-vivo hydrolysable ester group; or pharmaceutically acceptable salts thereof.
Abstract:
The present invention is broadly directed to novel compounds useful for the synthesis of biologically active compounds. More particularly, the present embodiments disclosed herein relate to novel side chains, that when coupled to a taxane, are useful for the synthesis of pharmaceutically useful taxanes. Methods of forming the novel side chains and coupling them to hindered alcohols, namely taxanes resulting in useful esters are also disclosed. Various taxanes compounds are known to exhibit anti-tumor activity.