Answers are grounded in this paper and cite their sources.
The structures of viriditoxin, first isolated from Aspergillus & viridinutans as mycotoxin, and its derivatives, isolated from Paecilomyces variotii, were revised from 8, 8'-binaphtho-α-pyrone to 6, 6'-binaphtho-α-pyrone on the basis of spectroscopic investigations. The absolute stereochemistry of the 6, 6'-axis was also determined as an R-configuration.
No takes yet. Share an insight, caveat, or question.
Suzuki et al. (1990) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: