Synthesen von C‐Nucleosiden und C‐Nucleosidanaloga. I. Darstellung von 1‐(D‐galacto‐2,3,4,5,6‐Pentakisacetoxyhexanoyl)‐3‐alkyl‐ oder arylamino‐6,6‐dimethyl‐4,5,6,7‐tetrahydro‐benzo[c]thiophen‐4‐onen

Abstract

Syntheses of C‐Nucleosides and Analogs of C‐Nucleosides. I. Preparation of 1‐(D‐galacto‐2,3,4,5,6‐Pentakisacetoxy‐hexanoyl)‐3‐alkyl‐or arylamino‐6,6‐dimethyl‐4,5,6,7‐tetrahydro‐benzo[c] thiophene‐4‐ones2‐(Alkyl‐ or Arylamino‐mercapto‐methylen)‐5,5‐dimethyl‐cyclohexane‐1,3‐diones 1 react in alkaline medium with 3,4,5,6,7‐penta‐O‐acetyl‐1‐bromo‐1‐deoxy‐D‐galacto‐heptulose 2b to give the title compounds 6d‐g.