Abstract: The invention provides compounds of formula I: wherein Y is F or Br; or a pharmaceutically acceptable salt thereof. The compounds are effective antitumor agents. The invention also provides pharmaceutical compositions comprising a compound of formula I or a salt thereof, intermediates useful for preparing a compound of formula I, therapeutic methods comprising administering a compound of formula I or a salt thereof to a mammal in need thereof, and methods of inhibiting cancer cells.

Abstract: The invention provides compounds of the formula: wherein X, Y, and Z are as defined in the specification. The compounds are effective anti-tumor agents. The invention also provides pharmaceutical compositions comprising a compound of the above formula or a salt thereof, intermediates useful for preparing a compound of the above formula, and therapeutic methods comprising administering a compound of the above formula or a salt thereof to a mammal in need thereof.

Abstract: The invention provides compounds of the formula: wherein A, X, Y, and Z are as defined in the specification. The compounds are effective anti-tumor agents. The invention also provides pharmaceutical compositions comprising a compound of the above formula or a salt thereof, intermediates useful for preparing a compound of the above formula, and therapeutic methods comprising administering a compound of the above formula or a salt thereof to a mammal in need thereof.

Abstract: The invention provides compounds of formula I: wherein Y is F, Cl, Br, methyl or methoxy; and pharmaceutically acceptable salts thereof. The compounds are effective antitumor agent. The invention also provides pharmaceutical compositions comprising a compound of formula I or a salt thereof, intermediates useful for preparing a compound of formula I, and therapeutic methods comprising administering a compound of formula I or a salt thereof to a mammal in need thereof.

Abstract: The invention provides compounds of the formula: wherein X, Y, and Z are as defined in the specification. The compounds are effective anti-tumor agents. The invention also provides pharmaceutical compositions comprising a compound of the above formula or a salt thereof, intermediates useful for preparing a compound of the above formula, and therapeutic methods comprising administering a compound of the above formula or a salt thereof to a mammal in need thereof.

Abstract: The invention provides compounds of formula I: wherein Y is F, Cl or Br; or a pharmaceutically acceptable salt thereof. The compounds are effective antitumor agents. The invention also provides pharmaceutical compositions comprising a compound of formula I or a salt thereof, intermediates useful for preparing a compound of formula I, and therapeutic methods comprising administering a compound of formula I or a salt thereof to a mammal in need thereof.

Abstract: The invention provides compounds of formula I: wherein Y is F, Cl, Br, methyl or methoxy; and pharmaceutically acceptable salts thereof. The compounds are effective antitumor agents. The invention also provides pharmaceutical compositions comprising a compound of formula I or a salt thereof, intermediates useful for preparing a compound of formula I, and therapeutic methods comprising administering a compound of formula I or a salt thereof to a mammal in need thereof.

Abstract: The invention provides compounds of the formula: wherein A, X, Y, and Z are as defined in the specification. The compounds are effective anti-tumor agents. The invention also provides pharmaceutical compositions comprising a compound of the above formula or a salt thereof, intermediates useful for preparing a compound of the above formula, and therapeutic methods comprising administering a compound of the above formula or a salt thereof to a mammal in need thereof.

Abstract: The invention provides compounds of formula I: wherein Y is F, Cl, Br, methyl or methoxy; and pharmaceutically acceptable salts thereof. The compounds are effective antitumor agents. The invention also provides pharmaceutical compositions comprising a compound of formula I or a salt thereof, intermediates useful for preparing a compound of formula I, and therapeutic methods comprising administering a compound of formula I or a salt thereof to a mammal in need thereof.

Abstract: The invention provides compounds of the formula: 1

Abstract: The present invention includes purified and isolated quassinoids and synthetically derived quassinoid analogs based on a picrasane carbon skeleton. Novel sidechains at C-15 incorporating water solubilizing agents such as glycine are discussed. Therapeutic methods taking advantage of anticancer, antiviral, and herbistatic properties of these quassinoids are disclosed, including use against solid tumors and human immunodeficiency virus infected cells.

Abstract: The invention provides compounds of formula I: 1

Abstract: The present invention includes purified and isolated quassinoids and synthetically derived quassinoid analogs based on a picrasane carbon skeleton. Novel sidechains at C-15 incorporating water solubilizing agents such as glycine are discussed. Therapeutic methods taking advantage of anticancer, antiviral, and herbistatic properties of these quassinoids are disclosed, including use against solid tumors and human immunodeficiency virus infected cells.

Abstract: The present invention includes purified and isolated quassinoids and synthetically derived quassinoid analogs based on a picrasane carbon skeleton. Novel sidechains at C-15 incorporating water solubilizing agents such as glycine are discussed. Therapeutic methods taking advantage of anticancer, antiviral, and herbistatic properties of these quassinoids are disclosed, including use against solid tumors and human immunodeficiency virus infected cells.

Abstract: A cryptophycin compound is provided having the structure: ##STR1## Further provided are methods of producing cryptophycins by total synthesis and methods of using cryptophycins in pharmaceuticals. It is a further object of this invention to use cryptophycins to inhibit the proliferation of mammalian cells. Moreover, methods of using cryptophycins to treat neoplasia is also provided.

Abstract: The present invention includes purified and isolated quassinoids and synthetically derived quassinoid analogs based on a picrasane carbon skeleton. Novel sidechains at C-15 incorporating water solubilizing agents such as glycine are discussed. Therapeutic methods taking advantage of anticancer, antiviral, and herbistatic properties of these quassinoids are disclosed, including use against solid tumors and human immunodeficiency virus infected cells.

Abstract: A cryptophycin compound is provided having the structure: ##STR1## Further provided are methods for producing novel cryptophycins from the Nostoc sp. of blue-green algae (cyanobacteria). Pharmaceutical compositions comprising novel cryptophycins are also provided, as are methods for using cryptophycins to inhibit the proliferation of hyperproliferative cells. Further provided are methods for using cryptophycins to inhibit the proliferation of hyperproliferative cells with drug resistant phenotypes, and to treat pathological conditions, such as neoplasia.

Abstract: A cryptophycin compound is provided having the structure: ##STR1## Further provided are methods for producing novel cryptophycins from the Nostoc sp. of blue-green algae (cyanobacteria). Pharmaceutical compositions comprising novel cryptophycins are also provided, as are methods for using cryptophycins to inhibit the proliferation of hyperproliferative cells. Further provided are methods for using cryptophycins to inhibit the proliferation of hyperproliferative cells with drug resistant phenotypes, and to treat pathological conditions, such as neoplasia.

Abstract: The present invention includes purified and isolated quassinoids and synthetically derived quassinoid analogs based on a picrasane carbon skeleton. Novel sidechains at C-15 incorporating water solubilizing agents such as glycine are discussed. Therapeutic methods taking advantage of anticancer, antiviral, and herbistatic properties of these quassinoids are disclosed, including use against solid tumors and human immunodeficiency virus infected cells.

Abstract: Quassinoid compounds, compositions, and methods of using them for treating cells and solid tumors, and inhibiting plant growth.