New purine derivatives from the marine sponge petrosia nigricans

Ashour, M. and Edrada-Ebel, R.A. and Ebel, R. and Wray, V. and van Soest, R.W.M. and Proksch, P. (2008) New purine derivatives from the marine sponge petrosia nigricans. Natural Product Communications, 3 (11). pp. 1889-1894. ISSN 1934-578X

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Abstract

Four new purine analogues (nigricines 1 - 4) have been isolated from the Indonesian marine sponge Petrosia nigricans. The structures were elucidated by extensive 2D-NMR spectroscopic experiments and mass spectrometry.