Addition of Oxime Derivatives to Alkynyl Fischer Carbene Complexes
摘要:
The addition of oxime derivatives to alkynyl Fischer carbene complexes has been explored through a combined experimental and computational approach. Up to four different heterocycles with diverse regiochemistry and ring size were found, depending on the starting ketone. The reaction mechanism was studied by DFT methods.
Camptothecin derivatives as chemoradiosensitizing agents
申请人:Yang Li-Xi
公开号:US20070093432A1
公开(公告)日:2007-04-26
Camptothecin-based compounds are useful for treating a neoplasm in mammalian subjects by administering such compound to the subjects in combination with radiotherapy, i.e., the treatment of tumors with radioactive substances or radiation from a source external to the subject. Camptothecin-based compounds are modified by positioning at least one electron-affinic group around the camptothecin structure to enhance their value in combination with radiotherapy. New Camptothecin-based compounds are disclosed that are useful for treating cancer by administering the novel compounds alone or in combination with radiotherapy.
CAMPTOTHECIN DERIVATIVES AS CHEMORADIOSENSITIZING AGENTS
申请人:YANG Li-Xi
公开号:US20080318873A1
公开(公告)日:2008-12-25
Camptothecin-based compounds are useful for treating a neoplasm in mammalian subjects by administering such compound to the subjects in combination with radiotherapy, i.e., the treatment of tumors with radioactive substances or radiation from a source external to the subject. Camptothecin-based compounds are modified by positioning at least one electron-affinic group around the camptothecin structure to enhance their value in combination with radiotherapy. New Camptothecin-based compounds are disclosed that are useful for treating cancer by administering the novel compounds alone or in combination with radiotherapy.
We investigated the reaction of ketoximes with hypervalentiodinereagents. A combination of PhI(OAc)2 and BF3·Et2O promoted the Beckmann rearrangement of ketoximes, thus yielding the corresponding amides. From a detailed investigation of the reaction, we determined that the Beckmann rearrangement is preceded by acetylation of the hydroxy group of the ketoxime in situ, accelerating the Beckmann rearrangement
Kawase,M.; Kikugawa,Y., Journal of the Chemical Society. Perkin transactions I, 1979, p. 643 - 645
作者:Kawase,M.、Kikugawa,Y.
DOI:——
日期:——
N-Substituted Imines by the Copper-Catalyzed <i>N</i>-Imination of Boronic Acids and Organostannanes with <i>O</i>-Acyl Ketoximes
作者:Songbai Liu、Ying Yu、Lanny S. Liebeskind
DOI:10.1021/ol070561w
日期:2007.5.1
Catalytic quantities of copper(I) or copper(II) sources catalyze the N-imination of boronic acids and organostannanes through reaction with oxime O-carboxylates under nonbasic conditions. This method tolerates various functional groups and takes place efficiently using aryl, heteroaryl, and alkenyl boronic acids and stannanes.