Kugelman M, Jaret R S, Mittelman S, Gau W
J Antibiot (Tokyo). 1978 Jul;31(7):643-5. doi: 10.7164/antibiotics.31.643.
Aminoglycoside antibiotic 66-40G is a minor component produced in the fermentation of Micromonospora inyoensis. Its structure has been established as 3''-de-N-methyl-sisomicin (4) by spectroscopic means and by direct comparison with an authentic sample obtained from photochemical oxidative de-N-methylation of sisomicin (1).