Anthracyclinone trisaccharide compounds
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United States of America Patent
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Nov 29, 1983
Grant Date -
N/A
app pub date -
Apr 20, 1982
filing date -
Apr 23, 1981
priority date (Note) -
Expired
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Abstract
Disclosed are novel anthracyclinone glycosides represented by the chemical formula ##STR1## wherein R.sup.1 is hydrogen or methyl; R.sup.2 is hydrogen or hydroxyl; R.sup.3 is hydrogen or methoxycarbonyl; R.sup.4 is two hydrogen atoms or an oxygen atom; R.sup.5 is hydrogen, hydroxyl or --OCOX (wherein X is lower alkyl or aralkyl); R.sup.6 is amino, monomethylamino or dimethylamino; R.sup.7 is hydrogen or acetyl; and R.sup.8 is hydrogen or L-cinerulose A ##STR2## but, when R.sup.1 and R.sup.3 are hydrogen and methoxycarbonyl respectively, R.sup.2 is hydrogen; R.sup.4 is two hydrogen atoms; R.sup.5 is hydrogen; R.sup.6 is amino, monoethylamino or dimethylamino; R.sup.7 is acetyl; and R.sup.8 is L-cinerulose A, and their acid addition salts and a method for preparation thereof which consists of treating O-alpha-L-cinerulosyl-(1.fwdarw.4)-O-(3-O-acetyl-2-deoxy-alpha-L-fucosyl)-(1.fwdarw.4)-alpha-L-rhodosamine with corresponding aglycones.
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