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US 4,540,517 AGranted
Antibiotic TAN-420
AssigneeTakeda Chemical Industries, Ltd.
InventorsSeiichi Tanida, Masayuki Muroi, Toru Hasegawa
Life of this patent
Estimating the term…
Abstract
A compound of the formula: ##STR1## wherein R.sub.1 and R.sub.2 are the same or different and each represents hydrogen or methyl and X is ##STR2## provided that when R.sub.1 is hydrogen, R.sub.2 is hydrogen or methyl and X is ##STR3## and when R.sub.1 is methyl, R.sub.2 is methyl and X is ##STR4## is produced by cultivating a a microorganism belonging to the genus Streptomyces in a culture medium. Said compound is useful as an antimicrobial agent and so forth.
Claims6
A compound of the formula:
- ##STR15## wherein R.sub.1 and R.sub.2 are the same or different and each represents hydrogen or methyl and X is ##STR16## provided that when R.sub.1 is hydrogen, R.sub.2 is hydrogen or methyl and X is ##STR17## and when R.sub.1 is methyl, R.sub.2 is methyl and X is ##STR18##
Dependencies are inferred from the claim text.