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

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-ones 2-(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.