A new quinolizidine alkaloid from the Papua New Guinean sponge Xestospongia exigua.
A new bis-quinolizidine alkaloid, xestosin A (1), possessing cis- and trans-quinolizidine nuclei, has been isolated from the Papua New Guinean sponge Xestospongia exigua. The structure was determined by spectrometric and single-crystal X-ray analyses.
Iwagawa
T
T
Faculty of Science, Kagoshima University, Korimoto Kagoshima 890-0065, Japan. iwagawa@sci.kagoshima-u.ac.jp
Kaneko
M
M
Okamura
H
H
Nakatani
M
M
van Soest
R W
RW
Shiro
M
M
D000470:Alkaloids / Q000737:chemistry / Q000302:isolation & purification*; D000818:Animals; D015394:Molecular Structure; D011161:Porifera / Q000737:chemistry*; D011807:Quinolizines / Q000737:chemistry / Q000302:isolation & purification*; D013057:Spectrum Analysis; D014961:X-Ray Diffraction
D000470:Alkaloids; D011807:Quinolizines