Answers are grounded in this paper and cite their sources.
The known 7,8‐secolabdane type diterpenoids neopallavicinin (1), pallavicinin (2), and 18‐hydroxypallavicinin (3) were isolated from Pallavicinia ambigua, and their structures were determined. The X‐ray crystal structure of 1 was solved, and, in combination with CD and NMR studies, the absolute configurations of 1–3 were established. A possible biogenetic pathway for 1 and 2 from a single labdane precursor is proposed.
No takes yet. Share an insight, caveat, or question.
Li et al. (2005) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: