Synthesis of Novel 7α-Thiol-Bridged Progesterone Derivatives
作者:James H. Wynne、Christopher T. Lloyd、George W. Mushrush
DOI:10.1081/scc-120016346
日期:2003.1.4
Novel synthetic routes to the formation of progesterone derivatives are of interest due to their potential role in the treatment of breast cancer. This multi-step synthesis proceeds via the dehydrogenation of the endocyclic ketone moiety of the steroid, affording the resulting alpha,beta,gamma,delta-unsaturated system. This is followed by 1,6-conjugate addition of p-aminothiophenol, affording the C7 thiol-bridged progesterone analog. The resulting compound was then subjected to a selection of isocyanates affording a variety of novel progesterone derivatives for their medicinal evaluation.
C-7 Analogues of Progesterone as Potent Inhibitors of the P-Glycoprotein Efflux Pump
作者:Fabio Leonessa、Ji-Hyun Kim、Alem Ghiorghis、Robert J. Kulawiec、Charles Hammer、Abdelhossein Talebian、Robert Clarke
DOI:10.1021/jm010126m
日期:2002.1.1
the MDR1 gene has been implicated in the multiple drug resistance phenotype expressed by many cancers. Functioning as an effluxpump, P-glycoprotein prevents the accumulation of high intracellular concentrations of substrates. We have taken a rational approach to designing inhibitors of P-glycoprotein function, selecting a natural substrate (progesterone) as our lead compound. We hypothesized that progesterone