S. Erbeck et al., SANNAMYCIN-TYPE AMINOGLYCOSIDE ANTIBIOTICS - EFFICIENT SYNTHESES - BIOLOGICAL-ACTIVITY, EUROPEAN JOURNAL OF ORGANIC CHEMISTRY, (9), 1998, pp. 1935-1948
Shorter and more efficient routes to 6'-des(N-methyl)sannamycin A (1)
and its 2'-epi analog 2 have been elaborated with the proven sannamine
-type acceptor 10 and the glycosyl donors 5-8 featuring novel protecti
ng patterns. With glycal 9 as glycosyl donor (and 10) an expedient acc
ess to 2'-desamino- (3) and 2'-desamino-2'-epi-hydroxysanna-mycin A (4
) has been opened. For 4 a modest antibacterial activity was found, wh
ile 3 was inactive.