Unknown

Dataset Information

0

N-Methyl-β-carbolinium Salts and an N-Methylated 8-Oxoisoguanine as Acetylcholinesterase Inhibitors from a Solitary Ascidian, Cnemidocarpa irene.


ABSTRACT: New brominated β-carbolines irenecarbolines A (1) and B (4) along with known β-carbolines 2 and 3 and a new 8-oxoisoguanine derivative, 5, were isolated from a solitary ascidian, Cnemidocarpa irene. The structures of these compounds were determined on the basis of their spectral data. All, except for 3, inhibited the action of acetylcholinesterase (AchE). The activities of 1 and 5 were comparable to those of galantamine, a clinically used AchE inhibitor. Compounds 1 and 2 were found to be present in high concentrations in blood, and fluorescence was observed in certain types of cells found in the blood of the tunicate.

SUBMITTER: Tadokoro Y 

PROVIDER: S-EPMC6044787 | biostudies-literature | 2017 Mar

REPOSITORIES: biostudies-literature

altmetric image

Publications

<i>N</i>-Methyl-β-carbolinium Salts and an <i>N</i>-Methylated 8-Oxoisoguanine as Acetylcholinesterase Inhibitors from a Solitary Ascidian, <i>Cnemidocarpa irene</i>.

Tadokoro Yohei Y   Nishikawa Teruaki T   Ichimori Taichi T   Matsunaga Satoko S   Fujita Masaki J MJ   Sakai Ryuichi R  

ACS omega 20170321 3


New brominated β-carbolines irenecarbolines A (<b>1</b>) and B (<b>4</b>) along with known β-carbolines <b>2</b> and <b>3</b> and a new 8-oxoisoguanine derivative, <b>5</b>, were isolated from a solitary ascidian, <i>Cnemidocarpa irene</i>. The structures of these compounds were determined on the basis of their spectral data. All, except for <b>3</b>, inhibited the action of acetylcholinesterase (AchE). The activities of <b>1</b> and <b>5</b> were comparable to those of galantamine, a clinically  ...[more]

Similar Datasets

| S-EPMC5784158 | biostudies-literature
| S-EPMC2983946 | biostudies-literature
| S-EPMC10413458 | biostudies-literature
| S-EPMC6707023 | biostudies-literature
| S-EPMC6368682 | biostudies-literature
| S-EPMC10087333 | biostudies-literature
| S-EPMC5085765 | biostudies-literature
| S-EPMC6823258 | biostudies-literature
| S-EPMC3359057 | biostudies-literature
| S-EPMC3179514 | biostudies-literature