Photochemische Reaktionen. 62. Mitteilung [1]. Die Photofragmentierung von O-acetyljervin
作者:E. Baggiolini、H. G. Berscheid、G. Bozzato、E. Cavalieri、K. Schaffner、O. Jeger
DOI:10.1002/hlca.19710540202
日期:——
On ultraviolet irradiation O-acetyljervine (1) is subjected to several parallel fragmentations. From the complex reaction mixtures obtained in a variety of solvents (dioxan, tetrahydrofuran, acetonitrile, iso-octane, benzene) the major alicyclic products 6–8 and the heterocyclic compounds 12–16 have been isolated. Products 6–8 undergo further photochemical changes, e.g., decarbonylation of 7 to 9 and
Use of steroidal alkaloids to reverse multidrug resistance
申请人:——
公开号:US20030114393A1
公开(公告)日:2003-06-19
The invention provides steroidal alkaloids for inhibiting or reversing multidrug resistance in cancer or in bacterial, fungal or parasitic infections. The steroidal alkaloid may be administered to the patient alone or in combination with an anticancer, antibacterial, antifungal or antiparasitic agent. Examples of steroidal alkaloids include members of the solanidane or spirosolane e.g. tomatidine, families, and C-nor-D-homo steroid such as of the jervane or veratramine families.