Epothilones A and B (1 and 2) are natural products with potent antitumor activity. These compounds have a TaxolTM-like mechanism of action against tumor cells. A totalsynthesis of epothilone A (1) is reported, which is based on the synthesis and union of two advanced fragments: C3-C11 fragment 4 and C12-C21 fragment 5. Bond construction methodology based on chiral silanes was utilized to introduce
[reaction: see text]Epothilones A (1) and B (2) are potent antitumor natural products with a Taxol-like mechanism of action. A totalsynthesis of epothilone A (1) is reported, which utilized chiral silane-based bond construction methodology to introduce the key C-6 and C-7 stereocenters of fragment 4. The C-15 stereocenter of fragment 5 was established by a lipase-mediated kinetic resolution. The fragments
The present application discloses compounds capable of modulating the activity of histone demethylases (HDMEs), which are useful for prevention and/or treatment of diseases in which genomic dysregulation is involved in the pathogenesis, such as e.g. cancer. The present application also discloses pharmaceutical compositions comprising said compounds and the use of such compounds as a medicament. The compounds take the form
Synthesis of 2-[[(p-nitrophenyl)sulfonyl]oxy] esters from ketene silyl acetals and bis[(p-nitrophenyl)sulfonyl] peroxide
作者:Robert V. Hoffman、Hwa Ok Kim
DOI:10.1021/jo00251a038
日期:1988.8
Dirhodium(II) Tetrakis[N-benzene-fused Phthaloyl-(S)-piperidinonate] as a Chiral Lewis Acid: Catalytic Enantioselective Aldol Reactions of Acetate-derived Silylketene Acetals and Aldehydes