Sagitol, a pyridoacridine alkaloid from the sponge Oceanapia sagittaria
摘要:
The sponge Oceanapia sagittaria from Palau contained the known sponge metabolite dercitamide (1) and a new pyridoacridine alkaloid sagitol (2). The structure of sagitol (2) was determined by interpretation of spectral data and confirmed by oxidation of dercitamide (1). CD measurements suggest that sagitol (2) is not an artifact. Copyright (C) 1996 Elsevier Science Ltd
Bioactive Pyridoacridine Alkaloids from the Micronesian Sponge <i>Oceanapia </i>sp.
作者:Claudia Eder、Peter Schupp、Peter Proksch、Victor Wray、Klaus Steube、Christa E. Müller、Wolfram Frobenius、Markus Herderich、Rob W. M. van Soest
DOI:10.1021/np9702704
日期:1998.2.1
The Micronesian sponge Oceanapia sp. afforded three pyridoacridine alkaloids: the known compounds kuanoniamine C (1) and kuanoniamine D (2), as well as the new N-deacyl derivative (3) of the kuanoniamines. Compounds 1 and 2 exhibited insecticidal activity toward neonate larvae of the polyphagous pest insect Spodoptera littoralis (LC50 of 156 and 59 ppm, respectively), when incorporated into artificial diet. Both compounds also showed toxicity in the brine shrimp lethality test with a LC50 of 37 mu g/mL (compound 1) and 19 mu g/mL (compound 2), respectively. The N-deacyl derivative did not show any remarkable effect in both bioassays. Cytotoxicity of the alkaloids was studied in vitro, using two human cell lines. The new derivative (3) appeared to be active in the same range of concentrations as kuanoniamine C (1) and D (2). The IC50 of 3 was 1.2 mu g/mL toward HeLa cells and 2.0 mu g/mL toward MONO-MAC 6 cells. In receptor binding assays compound 2 showed affinity to A(1)- and A(2A)-adenosine receptors with K-i values of 2.94 and 13.7 mu M, respectively. Compound 1 was less active than compound 2, whereas compound 3 showed no affinity toward adenosine receptors. In addition, compounds 1-3 exhibited moderate affinity to benzodiazepine binding sites of GABA(A) receptors.
US9181251B2
申请人:——
公开号:US9181251B2
公开(公告)日:2015-11-10
Sagitol, a pyridoacridine alkaloid from the sponge Oceanapia sagittaria
作者:Christine E. Salomon、D. John Faulkner
DOI:10.1016/s0040-4039(96)02163-6
日期:1996.12
The sponge Oceanapia sagittaria from Palau contained the known sponge metabolite dercitamide (1) and a new pyridoacridine alkaloid sagitol (2). The structure of sagitol (2) was determined by interpretation of spectral data and confirmed by oxidation of dercitamide (1). CD measurements suggest that sagitol (2) is not an artifact. Copyright (C) 1996 Elsevier Science Ltd