G. Korengoldshlager et al., 3 NEW ALKALOIDS FROM THE MARINE TUNICATE CYSTODYTES VIOLATINCTUS, Journal of organic chemistry, 63(14), 1998, pp. 4601-4603
Three novel alkaloids, shermilamine D and E (1 and 2) and tintamine (3
), two pyridoacridines (1 and 2), and one alkaloid possessing a new he
terocyclic system have been isolated from the Indian Ocean tunicate Cy
stodytes violatinctus collected at the Mayotte Lagoon, Comoros Islands
, northwest of Madagascar. The structures of all compounds were elucid
ated on the basis of spectroscopic data, mainly 1D and 2D NMR data.