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US 5,326,786 AGranted
5,6,7,9-tetrahydro-1,2,3-trimethoxy-9-oxobenzo[alpha]heptalene derivative and pharmaceutical use
AssigneeOhgen Research Laboratories, Ltd.
InventorKiyoshi Akiyama
Life of this patent
Estimating the term…
Abstract
Compounds represented by the formula ##STR1## wherein R.sub.1 and R.sub.2 each represent a hydrogen atom or a protective group for a hydroxyl group, or R.sub.1 and R.sub.2 combine to represent a protective group for hydroxyl groups, and R.sub.3 represents CH.sub.3 O-- or CH.sub.3 NH--. These compounds exhibit a strong effect to inhibit proliferation of cancer cells and are expected to be used as a carcinostatic agent.
Claims5
A compound represented by the following formula and a salt thereof:
- ##STR23## wherein R.sub.1 and R.sub.2 each represent a hydrogen atom or a protective group for a hydroxyl group, or R.sub.1 and R.sub.2 combine to represent a protective group for hydroxyl groups, and
- R.sub.3 represents CH.sub.3 O-- or CH.sub.3 NH--.
Dependencies are inferred from the claim text.