Abstract: The present invention is directed to several newly discovered ecteinascidin (Et) species, designated herein as Et 731, Et 815, Et 808, and Et 594. The physical properties of these compounds, their preparation and therapeutic properties are also reported.

Abstract: The present invention is directed to several newly discovered ecteinascidin (Et) species, designated herein as Et 731, Et 815, Et 808, and Et 594. The physical properties of these compounds, their preparation and therapeutic properties are also reported.

Abstract: Dehydrodidemnin B with useful biological activity has formula (1).

Abstract: The purification and structure elucidation of several products of the metabolism of Et 743 by human cytochrome CYP3A4 have been accomplished. These compounds are abbreviated herein as “ETM” followed by a numeric value which represents the approximate molecular weight. Three compounds have been identified to date, namely ETM 305, ETM 775 and ETM 204.

Abstract: Investigation of the activity of extracts of the clam Spisula polynyma has led to antitumor long-chain, straight-chain alkane or alkene compounds which have a 2-amino group and a 3-hydroxy group. The present invention is directed to compositions and methods comprising an isolated and purified long-chain, straight-chain 2-amino-3-hydroxyalkane, or prodrug thereof, and a pharmaceutically acceptable carrier, wherein the carbon chain in the long-chain, straight-chain 2-amino-3-hydroxyalkane is C16–C24.

Abstract: A bear derived isolate found in denning black bears or black bears from which food has been withheld for at least two weeks when injected into another mammal produces reduced heart rate, reduced respiratory rate, reduced temperature, and a wakeful tranquility not unlike the phenomena of the denning black bear. The isolate is taken from either the serum or urine of such denning bear. The method of the invention involves the steps of fractionating the serum or urine of a denning black bear to produce fractions of varying potency.

Abstract: The purification and structure elucidation of several products of the metabolism of Et 743 by human cytochrome CYP3A4 have been accomplished. These compounds are abbreviated herein as “ETM” followed by a numeric value which represents the approximate molecular weight. Three compounds have been identified to date, namely ETM 305, ETM 775 and ETM 204.

Abstract: A bear derived isolate found in denning black bears or black bears from which food has been withheld for at least two weeks when injected into another mammal produces reduced heart rate, reduced respiratory rate, reduced temperature, and a wakeful tranquility not unlike the phenomena of the denning black bear. The isolate is taken from either the serum or urine of such denning bear. The method of the invention involves the steps of fractionating the serum or urine of a denning black bear to produce fractions of varying potency.

Abstract: Disclosed are semi-synthetic methods for the preparation of Didemnin Analogs. The compounds of this type are illustrated in Formula (I).

Abstract: A bear derived isolate found in denning black bears or black bears from which food has been withheld for at least two weeks when injected into another mammal produces reduced heart rate, reduced respiratory rate, reduced temperature, and a wakeful tranquility not unlike the phenomena of the denning black bear. The isolate is taken from either the serum or urine of such denning bear. The method of the invention involves the steps of fractionating the serum or urine of a denning black bear to produce fractions of varying potency.

Abstract: Investigation of the activity of extracts of the clam Spisula polynyma has led to antitumour long-chain, straight-chain alkane or alkene compounds which have a 2-amino group and a 3-hydroxy group.

Abstract: Investigation of the activity of extracts of the clam Spisula polynyma has led to antitumour long-chain, straight-chain alkane or alkene compounds which have a 2-amino group and a 3-hydroxy group.

Abstract: The present invention is directed to several newly discovered ecteinascidin (Et) species, designated herein as Et 731, Et 745B, Et 815, Et 808, Et 596, Et 597, Et 583, Et 594 and a synthetic derivative of Et 594, N-Acetyl Et 597. The physical properties of these compounds, their preparation and bioactivities are also reported.

Abstract: Dehydrodidemnin B with useful biological activity has formula (1). It can be isolated from natural sources or synthesized, and it forms active derivatives.

Abstract: Dehydrodidemnin with useful biological activity has formula (1). It can be isolated from natural sources or synthesized, and it forms active derivatives.

Abstract: Disclosed is a synthetic method for the preparation of analogs of Didemnin A (1), particularly the Amino-Hip analog of Didemnin A, also known as “AipDidemnin A” (8).

Abstract: Disclosed are semi-synthetic methods for the preparation of Didemnin analogs. The compounds of this type are illustrated in Formula (I).

Abstract: The purification and structure elucidation of several products of the metabolism of Et 743 by human cytochrome CYP3A4 have been accomplished. These compounds are abbreviated herein as “ETM” followed by a numeric value which represents the approximate molecular weight. Three compounds have been identified to date, namely ETM 305, ETM 775 and ETM 204.

Abstract: The present invention is directed to the isolation and bioactive characterization of compounds isolated from the clam Spisula polynyma. These compounds include three sphingoid-type bases, spisulosines 285, 299 and 313 (1-3), each of which shows unique cytotoxicity against L1210 murine lymphocytic leukemia cells. In addition, sphingosine (also referred to as 4-sphingenine or octadeca-4-shpingenine, 4) and two related compounds, nonadeca-4-sphingenine (a one carbon longer homolog, 5) and sphinga-4,10-diene (a dehydrosphingosine deravitive, 6) were also obtained, These compounds also contribute to the cytotoxicity of the Spisula polynyma extracts, but did not cause the morphology changes observed with compounds 1-3.

Abstract: Dehydrodidemnin B with useful biological activity has formula (1). It can be isolated from natural sources or synthesized, and it forms active derivatives.