NARCISTATIN PRODRUGS
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Abstract
The present invention provides prodrugs derived from the sparingly soluble anticancer isocarbostyril narciclasine, a component of various Narcissus species, said prodrugs having potential for use against animal and human cancers. Also disclosed is an efficient procedure for the synthetic conversion of narciclasine to several more soluble cyclic phosphate compounds, including “narcistatin”.
6 Citations
16 Claims
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1-4. -4. (canceled)
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5. A method for synthesizing pyridinium narcistatin, comprising reacting:
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narciclasine; tetrabutylammonium dihydrogen phosphate; dicyclohexylcarbodiimide; and p-toluenesulfonic acid in pyridine, to form a reaction mixture and forming pyridinium narcistatin. - View Dependent Claims (6)
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7. A method for synthesizing pyridinium narcistatin, comprising reacting
narciclasine; -
tetrabutylammonium dihydrogen phosphate; and dicyclohexylcarbodiimide in pyridine, to form a reaction mixture and forming pyridinium narcistatin. - View Dependent Claims (8)
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9. A method for synthesizing a compound having the formula:
wherein Z is a H+ or a metal cation, comprising reacting; narciclasine; tetrabutylammonium dihydrogen phosphate; dicyclohexylcarbodiimide; and p-toluenesulfonic acid in pyridine, to form a reaction mixture and forming pyridinium narcistatin; forming a solution of pyridinium narcistatin; and passing the solution of pyridinium narcistatin through a cation exchange resin, wherein the resin is a hydrogen form or bears a metal cation, to form the compound. - View Dependent Claims (10, 11)
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12. A method for synthesizing a compound having the formula:
wherein Z is a metal cation, comprising reacting; narciclasine; tetrabutylammonium dihydrogen phosphate; dicyclohexylcarbodiimide; and p-toluenesulfonic acid in pyridine, to form a reaction mixture and forming pyridinium narcistatin; suspending the pyridinium narcistatin in solvent; and reacting with a metal acetate, to form the compound. - View Dependent Claims (13, 14)
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15. A method for synthesizing a compound having the formula:
wherein Z is an ammonium ion, comprising reacting; narciclasine; tetrabutylammonium dihydrogen phosphate; dicyclohexylcarbodiimide; and p-toluenesulfonic acid in pyridine, to form a reaction mixture and forming pyridinium narcistatin, forming a solution of pyridinium narcistatin; and reacting the pyridinium narcistatin with an amine, to form the compound. - View Dependent Claims (16)
Specification