Answers are grounded in this paper and cite their sources.
Two new biological active cyclopentenones VM 4798-1a (1a) and VM 4798-1b (1b) were obtained as a 3:1 inseparable mixture from fermentations of Dasyscyphus sp. A47-98. The mixture of the two isomers showed cytotoxic and weak antibacterial and antifungal properties. VM 4898-1 (2-hydroxy-3,4-dimethyl-2-cyclopenten-1-one, 4), produced by another Dasyscyphus sp. showed no significant biological activity. The structures were elucidated by NMR techniques.
No takes yet. Share an insight, caveat, or question.
Mierau et al. (2004) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: