𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Prianosin A, a novel antileukemic alkaloid from the okinawan marine sponge Prianos melanos

✍ Scribed by Jun'ichi Kobayashi; Jie-fei Cheng; Masami Ishibashi; Hideshi Nakamura; Yasushi Ohizumi; Yoshimasa Hirata; Takuma Sasaki; Helen Lu; Jon Clardy


Publisher
Elsevier Science
Year
1987
Tongue
French
Weight
238 KB
Volume
28
Category
Article
ISSN
0040-4039

No coin nor oath required. For personal study only.

✦ Synopsis


A novel alkaloid, prianosin A (l), with potent antineoplastic activity has been isolated from the Okinawan marine sponge Pianos melanos.

Its absolute stereostructure was determined by single crystal x-ray diffraction analysis.


πŸ“œ SIMILAR VOLUMES


Plakoridine C, a novel piperidine alkalo
✍ Yuichiro Ishiguro; Takaaki Kubota; Kan’ichiro Ishiuchi; Jane Fromont; Jun’ichi K πŸ“‚ Article πŸ“… 2009 πŸ› Elsevier Science 🌐 French βš– 312 KB

A new piperidine alkaloid plakoridine C (1) has been isolated from an Okinawan marine sponge Plakortis species, and the structure was elucidated from spectroscopic data. Plakoridine C ( ) is a new alkaloid possessing a piperidine ring connected to a b-keto-c-lactone through a double bond.

Keramamine-A and -B, novel antimicrobial
✍ Hideshi Nakamura; Shongzhi Deng; Jun'ichi Kobayashi; Yasushi Ohizumi; Yasuko Tom πŸ“‚ Article πŸ“… 1987 πŸ› Elsevier Science 🌐 French βš– 299 KB

Keramamine-A and -B, two new B-carboline alkaloids with a 13 membered ring have been isolated from the Okinawan marine sponge Pellina sp. as antimicrobial substances and the structures of keramamine-A and -B have been determined by X-ray analysis and by spectral and chemical means, respectively. As

Purealidin D, a new pyridine alkaloid fr
✍ Masashi Tsuda; Hideyuki Shigemori; Masami Ishibashi; Jun'ichi Kobayashi πŸ“‚ Article πŸ“… 1992 πŸ› Elsevier Science 🌐 French βš– 178 KB

Purealidin D. a new alkaloid possessing a pyridinium and a bromotyrosine moiety was isolated from the Okinawan marine sponge Psammaplysilla purea and the structure elucidated on the basis of spectroscopic data. Among a variety of nitrogenous natural products from marine sponges, a number of brominat