Chemical modification of elsamicin A at the 3' and/or 4' OH grou

Drug – bio-affecting and body treating compositions – Designated organic active ingredient containing – Carbohydrate doai

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514 34, 536 168, 536 175, 536 172, 536 181, A61K 3171, C07H 1704

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active

052293718

ABSTRACT:
This invention relates to novel elsamicin A derivatives having an alkylidene group on the 3' and 4'-OH group or a tetrahydropyranyl group on the 4'-OH group, a process for producing said elsamicin A derivatives, antitumor composition containing the same as the active ingredient, and a method for therapy using said compositions.

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