Synthesis of nitrogen- and oxygen-containing macrocycles--derivatives of lithocholic Acid

Chemistry. 2005 Nov 18;11(23):7030-9. doi: 10.1002/chem.200500784.

Abstract

Palladium-catalyzed amination of 3,24-bis(3-bromophenoxy)cholane (4) with various polyamines and polyoxadiamines 5 taken in 1:1 ratio was used for the synthesis of the macrocycles 6, which contain steroidal and polyamine moieties and were obtained in 38-65 % yields. The same reaction with excess polyamine (2.2-3 equiv) provided bis(polyamino) derivatives of 3,24-diphenoxycholane 7 in excellent yields, whereas the diarylation of polyamines with two equivalents of 3,24-bis(3-bromophenoxy)cholane afforded their bis(steroidal) derivatives 8. Compounds 7 and 8 were employed in the syntheses of cyclodimers 9, which possess two steroidal and two polyamine fragments; the efficiency of two methods was compared.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Lithocholic Acid / chemical synthesis*
  • Magnetic Resonance Spectroscopy
  • Nitrogen / chemistry*
  • Oxygen / chemistry*
  • Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization

Substances

  • Lithocholic Acid
  • Nitrogen
  • Oxygen