摘要:
The present invention provides novel sulfoximine compounds, compositions comprising these compounds and methods of using these compounds as inhibitors of CYP24. In particular, the compounds of the invention are useful for treating diseases which benefit from a modulation of the levels of 1α,25-dihydroxy vitamin D3, for example, cell-proliferative disorders.
摘要:
The present invention provides novel sulfoximine compounds, compositions comprising these compounds and methods of using these compounds as inhibitors of CYP24. In particular, the compounds of the invention are useful for treating diseases which benefit from a modulation of the levels of 1α,25-dihydroxy vitamin D3, for example, cell-proliferative disorders.
摘要:
In only two steps and in 65% overall yield, natural trioxane artemisinin (I) was converted on gram scale into C-10-carba trioxane dimer (3). This new, very stable dimer was then transformed easily in one additional step into four different dimers (4-7). Alcohol and diol dimers (4 and 5) and ketone dimer (7) are 10 times more antimalarially potent in vitro than artemisinin (1), and alcohol and diol dimers (4 and 5) are strongly inhibitory but not cytotoxic toward several human cancer cell lines. Water-soluble carboxylic acid derivatives (8a-10c and 12) were easily prepared from dimers (4-6); they are thermally stable even at 60° C. for 24 hours, are more orally efficacious as antimalarials than either artelinic acid or sodium artesunate, and have potent and selective anticancer activities. Further derivitization of the alcohol dimers (4 and 17), diol dimer (5) and ketone (7) has produced a number of analogs also antimalarially active in vitro at sub-nanomolar concentrations (most notably: pyridine N-oxides (13, 15, 18, 23, 24 and 25), phosphoric acid triesters (26 and 27), sulfonamide (40) and cyclic carbonate (41)). In addition, dimers (13 and 19) are more efficacious (when administered both orally and i.v.) and less toxic (when administered intraperitoneally to mice as a single dose) than clinically-used sodium artesunate, thereby giving them a better antimalarial therapeutic index than sodium artesunate.
摘要:
The present invention provides novel 16-ene-C25-oxime and 16-ene-C-25-oxime ether analogs of 1α,25-dihydroxy vitamin D3, compositions comprising these compounds and methods of using these compounds as inhibitors of CYP24. In particular, the compound of Formula I are useful for treating diseases which benefit from a modulation of the levels of 1α,25-dihydroxy vitamin D3, for example, cell-proliferative disorders.
摘要:
Artemisinin-derived monomers and artemisinin dimers are shown to exhibit in-vitro anti-cytomegalovirus (CMV) activity. Artemisinin dimers effectively inhibited CMV replication in human foreskin fibroblasts and human embryonic lung fibroblasts with no cytotoxicity at concentrations required for complete CMV inhibition. Artemisinin dimers were found to be potent and non-cytotoxic inhibitors of CMV replication, which indicates their use as therapeutic agents for the treatment of CMV infection in humans.
摘要:
Artemisinin-derived monomers and artemisinin dimers are shown to exhibit in-vitro anti-cytomegalovirus (CMV) activity. Artemisinin dimers effectively inhibited CMV replication in human foreskin fibroblasts and human embryonic lung fibroblasts with no cytotoxicity at concentrations required for complete CMV inhibition. Artemisinin dimers were found to be potent and non-cytotoxic inhibitors of CMV replication, which indicates their use as therapeutic agents for the treatment of CMV infection in humans.