Four novel highly oxygenated labdane-type diterpenoids, named ptychantins F-I (1–4) have been isolated from the liverwort Ptychanthus striatus, and their structures including their absolute configurations established by a combination of high resolution NMR and CD spectra, X-ray crystallographic analysis, and chemical degradations.
No takes yet. Share an insight, caveat, or question.
Hashimoto et al. (1995) studied this question.
Synapse has enriched 5 related papers. Consider them for comparative context: