623148-33-4Relevant academic research and scientific papers
Synthesis of the branched C-glycoside substructure of altromycin B
Koo, Bonsuk,McDonald, Frank E.
, p. 3621 - 3624 (2007/10/03)
(Chemical Equation Presented) Tungsten-catalyzed cycloisomerization of alkynyl alcohols including 8 provides only the endocyclic enol ether (11) as a key intermediate for the branched Oglycoside substructure (2) of altromycin B. A sequence of Stille cross
Synthesis of both possible isomers of the northwest quadrant of Altromycin B
Pasetto, Paolo,Franck, Richard W.
, p. 8042 - 8060 (2007/10/03)
The synthesis of the northwest quadrant of Altromycin B is described. The preparation of the two epimers at the quaternary carbon of the 6-deoxy-C-altrose moiety in the northwest quadrant is accomplished starting from D-glucose. A key step of our synthetic sequence is the formation of the C-glycoside linkage via the Ramberg-Baecklund reaction. Two different routes are explored, which differ mainly on the timing of the conversion of glucose to altrose, either before or after the preparation of the C-glycoside. The conformation behavior of variously substituted C-altropyranoside rings is also discussed.
