Rhizoxin derivatives and their use as anti-tumor agents

Drug – bio-affecting and body treating compositions – Designated organic active ingredient containing – Having -c- – wherein x is chalcogen – bonded directly to...

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514 81, 514 92, 540603, 544 587, 544127, 544235, 544238, 544333, 544364, 544405, 546122, 546141, 546148, 546153, 546157, 546168, 546196, 546270, 548113, 548181, 548235, 548236, A61K 3142

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053526899

ABSTRACT:
Rhizoxin and rhizoxin-2-ene derivatives of formula ##STR1## in which: n is 1 to 25; A is an extra bond or oxygen, X is oxygen, sulfur, nitrogen or carbonyl; and R is hydrogen, carboxylic acyl having from 1 to 25 carbon atoms, alkoxycarbonyl group having from 2 to 26 carbon atoms, phosphono, alkylphosphono group in which the alkyl part has from 1 to 25 carbon atoms, dialkylphosphono group in which each alkyl part has from 1 to 25 carbon atoms, alkyl group having from 1 to 25 carbon atoms, aralkyl, cycloalkyl, heterocyclic, alkylthio group in which the alkyl part has from 1 to 25 carbon atoms, aralkylthio, or heterocyclylthio, or when X represents a nitrogen atom, R is R.sup.1 and R.sup.2, where R.sup.1 and R.sup.2 are hydrogen, alkyl, acyl, alkoxycarbonyl, phosphono, alkylphosphono or dialkylphosphono, have valuable anti-tumor activity. They may be prepared by acylation of rhizoxin or rhizoxin-2-ene.

REFERENCES:
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Chem Abstr vol. 110 entry 212496f (1989) Abstracting JP Sankyo.
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The Merck Index, An Encyclopedia of Chemicals, Drugs, and Biologicals, 10th Edition, 1983, p. 1408.
The Journal of Antibiotics, "Studies on Macrocyclic Lactone Antiobiotics VII.sup.1, Structure of a Phytotoxin Rhizoxin produced by Rhizopus Chinensis", Apr. 1984, pp. 354-362.

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