Identification of a novel aminonucleoside produced by Enterobacter sp. as 2'-amino-2'-deoxyguanosine.

Abstract
A novel guanosine analog, aminonucleoside antibiotic (2AG), produced by Enterobacter sp., was identified as 9-(2''-amino-2''-deoxy-.beta.-D-ribofuranosyl)-guanine (2''-amino-2''-deoxyguanosine) by PMR and 13C NMR spectra of 2AG and acetylated 2AG, and also by the comparison of the aminosugar obtained by hydrolysis of 2AG with 2-amino-2-deoxypentoses. This is the 1st report on the occurrence of 2-amino-2-deoxy-D-ribose in nature.