Dilemmaones A-C, unusual indole alkaloids from a mixed collection of south african sponges
Three indole alkaloids, dilemmaones A-C (1-3), were isolated from a mixture of sponges that was collected near Cape Town, South Africa. The structures of dilemmaones A-C (1-3) were elucidated by interpretation of spectroscopic data. The dilemma caused by faulty differentiation of similar specimens in the field is discussed in detail.
Beukes
DR
Scripps Institution of Oceanography, University of California at San Diego, La Jolla, California 92093-0212, Department of Chemistry, Rhodes University, Grahamstown, South Africa, and UNITEC Institute of Technology, Auckland, New Zealand.
Davies-Coleman
MT
Kelly-Borges
M
Harper
MK
Faulkner
DJ