Isolation, Synthesis, and Biological Activity of Aphrocallistin, an Adenine-Substituted Bromotyramine Metabolite from the Hexactinellida Sponge Aphrocallistes beatrix
摘要:
A new adenine-substituted bromotyrosine-derived metabolite designated as aphrocallistin (1) has been isolated from the deep-water Hexactinellida sponge Aphrocallistes beatrix. Its structure was elucidated on the basis of spectral data and confirmed through a convergent, modular total synthetic route that is amenable toward future analogue preparation. Aphrocallistin inhibits the growth of a panel of human tumor cell lines with IC50 values ranging from 7.5 to > 100 mu M and has been shown to induce G1 cell cycle arrest in the PANC-1 pancreatic carcinoma cell line. Aphrocallistin has been fully characterized in the NCI cancer cell line panel and has undergone in vitro ADME pharmacological profiling.
Isolation, Synthesis, and Biological Activity of Aphrocallistin, an Adenine-Substituted Bromotyramine Metabolite from the Hexactinellida Sponge Aphrocallistes beatrix
摘要:
A new adenine-substituted bromotyrosine-derived metabolite designated as aphrocallistin (1) has been isolated from the deep-water Hexactinellida sponge Aphrocallistes beatrix. Its structure was elucidated on the basis of spectral data and confirmed through a convergent, modular total synthetic route that is amenable toward future analogue preparation. Aphrocallistin inhibits the growth of a panel of human tumor cell lines with IC50 values ranging from 7.5 to > 100 mu M and has been shown to induce G1 cell cycle arrest in the PANC-1 pancreatic carcinoma cell line. Aphrocallistin has been fully characterized in the NCI cancer cell line panel and has undergone in vitro ADME pharmacological profiling.
The present invention provides novel purine-based fluorescent dyes that may be used for staining, localizing and otherwise labeling target molecules, such as nucleic acids, for detection, amplification and quantification.
Synthesis, ring opening, and glycosidic bond cleavage of 3-methyl-2′-deoxyadenosine
作者:Tozo Fujii、Tohru Saito、Tsuyoshi Nakasaka
DOI:10.1039/c39800000758
日期:——
of N′-benzyloxy-1-(2-deoxy-β-D-ribofuranosyl)-5-formamidoimidazole-4-carboxamidine (2a) followed by hydrogenolysis of the N′-benzyloxy-group and cyclization produced the hitherto unknown 3-methyl-2′-deoxyadenosine (5a), which was readily hydrolysed to 3-methyladenine (6) in H2)O at pH ⩽7·0 and to (6) and the imidazole-(2-deoxy)riboside (4a) at pH 8·98.