Answers are grounded in this paper and cite their sources.
Leaf extracts of Callicarpa pentandra provided four new clerodane-type diterpenoids (1-4), of which 1, 2, and 4 have ring-A-contracted structures. Their structures and stereochemistry were established by spectral data interpretation, and for 3 also by single-crystal X-ray diffraction.
No takes yet. Share an insight, caveat, or question.
Xu et al. (2000) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: