Synthesis of Both Possible Isomers of the Northwest Quadrant of Altromycin B
作者:Paolo Pasetto、Richard W. Franck
DOI:10.1021/jo034607k
日期:2003.10.1
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-Backlundreaction. Two different routes are explored, which differ mainly on